GE Industrial Solutions EntelliGuard G User Manual

Installation, Operation,
and Maintenance Manual

Retain for Future Use.

EntelliGuard® G Circuit
Breaker

2 ©2012 General Electric All Rights Reserved

DANGER

WARNING

CAUTION

NOTICE

HAZARD CATEGORIES

The following important highlighted information appears
throughout this document to warn of potential hazards or
to call attention to information that clarifies a procedure.

Carefully read all instructions and become familiar with
the devices before trying to install, operate, service or
maintain this equipment.

Indicates a hazardous situation which, if not avoided, will
result in death or serious injury.

Indicates a hazardous situation which, if not avoided,
could result in death or serious injury.

Failure to comply with these instructions may result in
product damage.

Indicates important information that must be
remembered and aids in job performance

TRADEMARKS

EntelliGuard™ G
EntelliGuard™ TU

WARRANTY

This document is based on information available at the
time of its publication. While efforts have been made to
ensure accuracy, the information contained herein does
not cover all details or variations in hardware and
software, nor does it provide for every possible
contingency in connection with installation, operation,
and maintenance. Features may be described herein that
are not present in all hardware and software systems. GE
Consumer & Industrial assumes no obligation of notice to
holders of this document with respect to changes
subsequently made. GE Consumer and Industrial makes
no representation or warranty, expressed, implied, or
statutory, with respect to, and assumes no responsibility
for the accuracy, completeness, sufficiency, or usefulness
of the information contained herein. No warrantees of
merchantability or fitness for purpose shall apply.

Contact your local sales office if further information is
required concerning any aspect of EntelliGuard G circuit
breaker operation or maintenance.

©2012 General Electric All Rights Reserved 3

EntelliGuard® G Circuit Breaker DEH-41304C
Table of Contents 13 March 2014

SECTION 1 – GENERAL INFORMATION

STORAGE ......................................................................................................................................................................................................................... 7

INTRODUCTION ........................................................................................................................................................................................................... 7

Quality Assurance ........................................................................................................................................................................................ 7

Options Check Sheet ................................................................................................................................................................................... 7

Product Serial Number............................................................................................................................................................................... 7

Measurement Units ..................................................................................................................................................................................... 7

PRODUCT DESCRIPTION ......................................................................................................................................................................................... 7

HAND TOOLS NEEDED FOR INSTALLATION .................................................................................................................................................. 7

Table 1.1. Required Hand Tools ............................................................................................................................................................ 7

Figure 1.1. EntelliGuard G Power Circuit Breaker Features and Characteristics...................................................................... 8

SECTION 2 – PRODUCT SPECIFICATIONS

Table 2.1. Environmental Conditions ............................................................................................................................................................... 9

Table 2.2. EntelliGuard G Short Circuit and Interrupting Ratings: ANSI/UL1066 ...................................................................... 9

Table 2.3. EntelliGuard G Short Circuit and Interrupting Ratings: UL489 ..................................................................................... 9

Table 2.4. EntelliGuard G Non-Automatic Circuit Breaker: ANSI Version................................................................................... 10

Table 2.5. EntelliGuard G Non-Automatic Circuit Breaker/Molded Case Switch: UL Version ......................................... 10

Table 2.6. Key to Tables 2.2 Through 2.5 .................................................................................................................................................... 10

Table 2.7. Agency Certification ........................................................................................................................................................................ 10

Table 2.8. Product Dimensions and Weights – ANSI/UL ..................................................................................................................... 11

SECTION 3 – LIFTING, MOUNTING AND INSTALLATION

CIRCUIT BREAKER UNPACKING ........................................................................................................................................................................ 12

BASIC CIRCUIT BREAKER CONSTRUCTION ............................................................................................................................................. 12

LIFTING AND MOUNTING .................................................................................................................................................................................... 13

Using a Lifting Truck ................................................................................................................................................................................. 13

Drawout Cassette Lifting, Mounting and Installation ............................................................................................................. 13

Circuit Breaker Installation in to the Cassette ............................................................................................................................ 13

Drawout Circuit Breaker Installation into the Cassette ......................................................................................................... 13

Circuit Breaker Removal from the Cassette ................................................................................................................................ 15

Fixed-Mounted Circuit Breaker Mounting .................................................................................................................................... 16

TRIP UNIT ................................................................................................................................................................................................................... 16

General Information ................................................................................................................................................................................. 16

Trip Unit Installation ................................................................................................................................................................................. 16

WIRING ......................................................................................................................................................................................................................... 17

Table 3.1. Wiring Schematic for Block-A ....................................................................................................................................... 17

Table 3.2. Wiring Schematic for Block-B ....................................................................................................................................... 17

Table 3.3. Wiring Schematic for Block-C ....................................................................................................................................... 17

Table 3.4. Electronic Interlock ............................................................................................................................................................. 18

Table 3.5. Wiring Schematic Nomenclature Definitions ........................................................................................................ 18

SECONDARY DISCONNECT BLOCKS .............................................................................................................................................................. 19

Table 3.6. Terminal Wiring ..................................................................................................................................................................... 19

SELECTIVITY/BACKUP PROTECTION ............................................................................................................................................................... 19

SECTION 4 – OPERATION

STORED ENERGY MECHANISM KEY FEATURES ......................................................................................................................................... 20

Table. 4.1. Stored Energy Mechanism Sequences of Operation ....................................................................................... 20

Circuit Breaker Charging........................................................................................................................................................................ 20

Two Step Mechanism Design .............................................................................................................................................................. 20

CLOSING SPRING DISCHARGE PROCEDURE .............................................................................................................................................. 21

Table 4.2. Cassette Operating Positions ........................................................................................................................................ 21

4 ©2012 General Electric All Rights Reserved

DEH-41304C EntelliGuard® G Circuit Breaker
13 March 14 Table of Contents

CLOSING PROCEDURE ..................................................................................................................................................................................................... 21

CONDITIONS WHEN CLOSING CANNOT OCCUR ................................................................................................................................................ 21

CIRCUIT BREAKER OPENING PROCEDURE ............................................................................................................................................................. 21

SECTION 5 – LOCKS AND INTERLOCKS

GENERAL INFORMATION ................................................................................................................................................................................................ 22

CIRCUIT BREAKER FRONT PANEL LOCKING .......................................................................................................................................................... 22

Pushbutton Locking .......................................................................................................................................................................................... 22

Key Lock for Breaker Trip Free Condition .............................................................................................................................................. 23

DRAWOUT CASSETTE FRONT PANEL LOCKING ................................................................................................................................................... 23

Security Locking .................................................................................................................................................................................................. 23

Isolation Shutters Locking (If Installed) ................................................................................................................................................... 23

Door Interlock Installation ............................................................................................................................................................................. 24

KEY LOCKS AND INSTALLATION .................................................................................................................................................................................. 25

TWO-BREAKER CABLE INTERLOCK INSTALLATION ........................................................................................................................................... 25

Vertical Mounting ............................................................................................................................................................................................... 25

Horizontal Mounting ......................................................................................................................................................................................... 26

SAFETY SHUTTERS INSTALLATION ............................................................................................................................................................................. 26

Table 5.1: Fixed-Mounted Circuit Breaker Locking ........................................................................................................................... 26

Table 5.2: Drawout Circuit Breaker Locking ......................................................................................................................................... 26

SECTION 6 – ACCESSORIES DESCRIPTION

GENERAL INFORMATION ................................................................................................................................................................................................ 27

INDIVIDUAL ACCESSORIES............................................................................................................................................................................................. 27

Motorized Spring Charging Unit ................................................................................................................................................................. 27

Table 6.1. Motor Operators .............................................................................................................................................................. 27

Circuit Breaker Closing Coils – Standard and Commanded ........................................................................................................ 28

Table 6.2. Closing Coil Characteristics ....................................................................................................................................... 28

Command Operation Module ...................................................................................................................................................................... 28

Shunt Trip (ST) ...................................................................................................................................................................................................... 28

Table 6.3. Extended Range Shunt Trip for UL Ground Fault and ANSI DC Rating Applications ................... 28

Status Indication Switch (Coil Signaling Contact) .............................................................................................................................. 28

Table 6.4. Coil Signaling Contact Module ................................................................................................................................. 28

Under Voltage Release (UVR) with Fixed Time Delay....................................................................................................................... 28

Table 6.5. UVR Operating Characteristics ................................................................................................................................ 29

Time Delay Module (TDM) for UVR (Externally Mounted) ............................................................................................................... 29

Table 6.6. TDM Characteristics ....................................................................................................................................................... 29

Remote Operation Coil Combination ....................................................................................................................................................... 29

Table 6.7. Remote Operation Coil Combination .................................................................................................................... 29

Auxiliary Switches .............................................................................................................................................................................................. 29

Table 6.8. Auxiliary Switches ........................................................................................................................................................... 29

Table 6.9. Auxiliary Switch Ratings and Secondary Disconnect Points .................................................................... 29

Circuit Breaker – Key Interlock Facility.................................................................................................................................................... 30

Table 6.10. Key Interlocks and Door Interlocks ..................................................................................................................... 30

Carriage Position Switch (TOC) .................................................................................................................................................................... 30

Table 6.11. Carriage Position Switches ...................................................................................................................................... 30

Table 6.12. Carriage Position Switch Ratings (Common NO/NC Contact Configuration................................. 30

Mechanical Interlocks (Cable/Rod) ............................................................................................................................................................ 30

Table 6.13. Mechanical Interlocks (Cable/Rod) ...................................................................................................................... 30

Cables ....................................................................................................................................................................................................................... 30

Table 6.14. Cables for Mechanical Interlocks ......................................................................................................................... 30

Table 6.15. Interlock Configurations ........................................................................................................................................... 31

Bell Alarm with Lockout .................................................................................................................................................................................. 31

Bell Alarm Switches ........................................................................................................................................................................................... 31

Table 6.16. Bell Alarm Switches ........................................................................................................................................................ 31

©2012 General Electric All Rights Reserved 5

EntelliGuard® G Circuit Breaker DEH-41304C
Table of Contents 13 March 2014

Table 6.17. Bell Alarm Ratings (Common NO/NC Contact Configuration) ................................................................ 31

Charging Spring Status Indicator .............................................................................................................................................................. 32

Table 6.18. Spring Charged Contact (1 NO) ............................................................................................................................ 32

Secondary Disconnects (Factory-Installed/Field Installable) ..................................................................................................... 32

Table 6.19. Block Location ............................................................................................................................................................... 32

Table 6.20. Secondary Disconnect Parts .................................................................................................................................. 32

Ground Fault ........................................................................................................................................................................................................ 32

Table 6.21. Neutral Rogowski CTs ......................................................................................................................................... 32-33

Ready to Close Contact .................................................................................................................................................................................. 33

Table 6.22. Ready to Close Contacts (1NO) ............................................................................................................................. 33

Sealed Door Panel Escutcheon .................................................................................................................................................................. 33

Mechanical Operations Counter................................................................................................................................................................ 33

Table 6.23. Miscellaneous Accessories ..................................................................................................................................... 33

Cassette Substructure .................................................................................................................................................................................... 33

Position Indicators............................................................................................................................................................................................. 33

Rejection Device ................................................................................................................................................................................................. 33

Front Flat Terminations .................................................................................................................................................................................. 33

Table 6.24. Optional Front Flat Terminations ......................................................................................................................... 33

SECTION 7 – ACCESSORIES INSTALLATION

CIRCUIT BREAKER FRONT COVER REMOVAL ....................................................................................................................................................... 34

MOTOR OPERATOR – SPRING CHARGING UNIT INSTALLATION ................................................................................................................. 34

SHUNT TRIP, CLOSING COIL AND UNDER VOLTAGE RELEASE DEVICE INSTALLATION .................................................................. 35

Closing Coil Installation .................................................................................................................................................................................. 35

Closing Coil Removal ....................................................................................................................................................................................... 35

NETWORK INTERLOCK INSTALLATION .................................................................................................................................................................... 35

Trip Alarm/Bell Alarm Switch Installation ............................................................................................................................................. 35

Ready to Close Switch Installation ........................................................................................................................................................... 35

SHUTTER PROP OPEN FEATURE ................................................................................................................................................................................. 35

CARRIAGE POSITION SWITCH INSTALLATION ..................................................................................................................................................... 36

BUSBAR/CABLE GROUNDING (OPTIONAL) ............................................................................................................................................................ 36

CLUSTERS .............................................................................................................................................................................................................................. 36

Upper Cluster Contact Set Grounding .................................................................................................................................................... 37

Lower Cluster Contact Set Grounding .................................................................................................................................................... 37

MECHANICAL TRIP ALARM INSTALLATION ............................................................................................................................................................ 37

MECHANICAL OPERATIONS COUNTER INSTALLATION (OPTIONAL) ......................................................................................................... 38

REJECTION FEATURE ........................................................................................................................................................................................................ 38

SECTION 8 – MAINTENANCE, TESTING AND TROUBLESHOOTING

MAINTENANCE .................................................................................................................................................................................................................... 39

Inspection Schedule ......................................................................................................................................................................................... 39

Cleaning Procedure .......................................................................................................................................................................................... 39

Contact Wear Indicator Inspection (Optional) .................................................................................................................................... 39

Circuit Breaker Main Mechanism Inspection ...................................................................................................................................... 40

Cassette Inspection .......................................................................................................................................................................................... 40

Isolating Contacts (Drawout Type) Inspection ................................................................................................................................... 40

Power Terminals and Busbar Inspection .............................................................................................................................................. 40

Lubrication ............................................................................................................................................................................................................ 40

TRIP UNIT TESTING ............................................................................................................................................................................................................ 40

Trip Unit Testing .................................................................................................................................................................................................... 40

TROUBLESHOOTING ......................................................................................................................................................................................................... 41

PUBLICATIONS .................................................................................................................................................................................................................... 42

6 ©2012 General Electric All Rights Reserved

DEH-41304C EntelliGuard® G Circuit Breaker

CAUTION

PRODUCT DAMAGE

 Do not store circuit breaker in corrosive

environments above LC1 (sea salt mist) and G1 as
per ANSI/ISA-S71.04-1985.

 Ensure circuit breakers and cassettes are stored in a

clean, dry location in their original packaging.

Failure to comply with these instructions may result

in product damage.

Tool Name

Function

Cluster pliers (two pairs, each with a different
gap, are supplied under Cat. No. GUNI)

To remove primary contacts for inspection and maintenance.
Screwdriver (8 mm)

 To operate racking shutter drive.

Allen wrench (5 mm)

 To remove arc chutes for inspection and maintenance.
 To remove or adjust fixed and moving arcing contacts.
 To remove mechanism.

Allen wrench key (4 mm)

To remove motor and gearbox mounting screws.

Metric feeler gauges

To check and adjust arcing contact gaps.

Pozidrive terminal screwdriver

 To remove mechanical and electronic component mounting screws.
 To connect wiring to secondary isolating contact terminals.

Pozidrive screwdriver (#1 and #3)

 To remove front cover mounting screws.
 To remove Rogowski coil and Power current transformer cover plate at the

rear of the circuit breaker moving portion.

Full Set of Metric Hex Allen Wrenches and
Socket Set

 To remove PMU base, auxiliary switch assembly, etc.

13 March 14 Section 1 – General Information

SECTION 1 – GENERAL INFORMATION

STORAGE

INTRODUCTION

Quality Assurance

All EntelliGuard G circuit breakers have been designed
and manufactured to the highest technical standards.
Strict procedures ensure first class product quality.

Options Check Sheet

Each circuit breaker comes with a detailed factory­assembled side label that lists all optional features
included on both the circuit breaker and on the trip unit.

Product Serial Number

Please have the serial number available when
communicating about the circuit breaker. Each circuit
breaker has a unique serial number located on the left
side (viewed from front) of the front fascia.

Table 1.1. Required Hand Tools

Measurement Units

 All data in this document is specified in conventional

metric/SI units.

 All internal/external accessory and external

cable/bus bar connections are metric for both IEC
and UL/ANSI versions.

PRODUCT DESCRIPTION

The EntelliGuard G Circuit Breaker is suitable for
application on power systems up to 1000 Vac 50/60 Hz
systems and up to 750 Vdc as a main/source breaker,
feeder breaker, bus coupler or tie breaker. See Section 2
for complete product specifications.

Figure 1.1 shows a front view of the EntelliGuard G. The
indicated features are referenced in this document.

HAND TOOLS NEEDED FOR INSTALLATION

Table 1.1 provides a list of the hand tools required to
install, operate and maintain the EntelliGuard G Circuit
Breaker.

©2012 General Electric All Rights Reserved 7

EntelliGuard® G Circuit Breaker DEH-41304C
Section 1 – General Information 13 March 14

Figure 1.1. EntelliGuard G Power Circuit Breaker Features and Characteristics

8 ©2012 General Electric All Rights Reserved

DEH-41304C EntelliGuard® G Circuit Breaker

WARNING

IMPROPER INSTALLATION, OPERATION AND
MAINTENANCE

Ensure only qualified personnel install, operate, service
and maintain all electrical equipment.

Failure to comply with these instructions could
result in death or serious injury.

Characteristic

Parameter

Temperature:

Operating
Ambient (surrounding circuit breaker)
Storage

-5 ºC to 70 ºC

-20 ºC to -5 ºC

-40 ºC to 70 ºC

Humidity

20% RH to 95% RH

Salt fog

per ASTM-B117

Vibration (random and sinusoidal)

1 G max., 50 Hz to 500 Hz in X, Y, Z directions

Fungus resistance

per ASTM G21

Voltage and current de-rating at altitude above sea level

per ANSI C37.20.1, Tables 2 and 3

Noise level

<30 dB

Endurance:

closing coil, Shunt trip
motor operator, under voltage release, accessories

20,000 operations
12,500 operations

Interrupting Rating Tier ANSI/UL1066 Devices, LVPCB

Envelope 1

Envelope 2

Envelope 3

Type

240 V

480 V

600 V

1/2S Withstand

400,
800,

1200

400, 800,

1600,

2000

3200

400-3200

3200

4000-5000

S

65,000

65,000

50,000

50,000

X

N

65,000

65,000

65,000

65,000

X X H

85,000

85,000

65,000

85,000

X

P

100,000

100,000

65,000

65,000

X E

85,000

85,000

85,000

85,000

X M

100,000

100,000

85,000

85,000

X X B

100,000

100,000

100,000

100,000

X

X

L

150,000

150,000

100,000

100,000

X X W

200,000

200,000

100,000

100,000

X

X

Interrupting Rating Tier ANSI/UL1066 Devices, LVPCB

Envelope 1

Envelope 2

Envelope 3

Type

240 V

480 V

600 V

1/2S Withstand

400-

1200

400-2000

2500-3000

400-3000

3000

4000

5000-

6000

S

65,000

65,000

50,000

42,000

X

N

65,000

65,000

65,000

42,000

X X H 85,000

85,000

65,000

50,000

X X

P

100,000

100,000

65,000

50,000

X

M

100,000

100,000

85,000

65,000

X X X L 150,000

150,000

100,000

85,000

X X X

W

200,000

200,000

100,000

85,000

X X X

13 March 14 Section 2 – Product Specifications

SECTION 2 – PRODUCT SPECIFICATIONS

Table 2.1. Environmental Conditions

Table 2.2. EntelliGuard G Short Circuit and Interrupting Ratings: ANSI/UL1066

Table 2.3. EntelliGuard G Short Circuit and Interrupting Ratings: UL489

©2012 General Electric All Rights Reserved 9

EntelliGuard® G Circuit Breaker DEH-41304C

Envelope

Type

Amps

Rated

Interrupting

Current

Rated Endurance

Minimum Mechanical

Endurance

Minimum Electrical
Endurance at 480 V

Minimum Electrical

Endurance at 600 V

1 S 800

42

12,500

10,000

7,500

1 N 800

42

12,500

10,000

7,500

1

N

1600

42

12,500

10,000

7,500

1

N

2000

42

12,500

7,500

5,000

2

M

3200

65

5,000

5,000

5,000

3

B

4000

100

5,000

3,000

2,000

3

B

5000

100

5,000

2,000

1,500

Envelope

Type

Amps

Short

Interrupting

Current (kA)

Rated Endurance

Minimum Mechanical

Endurance

Minimum Electrical
Endurance at 480 V

Minimum Electrical

Endurance at 600 V

1 S 800

42

12,500

10,000

7,500

1

S

1200

42

12,500

10,000

7,500

1 N 800

42

12,500

10,000

7,500

1

N

1600

42

12,500

10,000

7,500

1

N

2000

42

12,500

7,500

5,000

2

M

3000

65

5,000

5,000

5,000

3

B

4000

100

5,000

3,000

2,000

3

B

5000

100

5,000

3,000

1,500

3

B

6000

100

5,000

1,500

1,000

Type

Description

Type

Description

E

Sq. Rated (ICW = ICU) 400 A to 2000 A, 85 kAIC at 480/508 V

H

85 kAIC at 480/508 V; 65 kAIC at 600/635 V

B

Sq. Rated (ICW = ICU) 3200 A to 6000 A, 100 kAIC at 480/508 V

M

100 kAIC at 480/508 V; 85 kAIC at 600/635 V

N

65 kAIC at 480/508/600/635 V

L

150 kAIC at 480/508 V; 100 kAIC at 600/635 V

W

200 kAIC at 480/508 V; 100 kAIC at 600/635 V

Standard Number

Title

ANSI C37.13,16,17, 20, 50

Low-voltage AC Power Circuit Breakers

NEMA SG 3, 5

Low-voltage Power Circuit Breakers

NEMA AB1



UL 1008*

Automatic Transfer Switches

UL 1066

Low voltage AC and DC Power Circuit Breakers Used in Enclosures

UL 489

Molded-Case Circuit Breakers, Molded-Case Switches and Circuit-Breaker Enclosures

CSA 22.2, No 5.1

Molded-Case Circuit Breakers, Molded-Case Switches and Circuit-Breaker Enclosures

IEC 60947 Part 1

Low Voltage Switchgear and Control Gear - General Rules

IEC 60947 Part 2

Low Voltage Switchgear and Control Gear - Circuit-Breakers

IEC 60947 Part 5

Low Voltage Switchgear and Control Gear - Accessories

IEC 60947 Part 3

Low Voltage Switchgear and Control Gear - Switches, Disconnects, Switch-Disconnects and
Fuse-Combination Units

IEC Environmental: 68-2-1,-2,-3,-6,-11,­14,-14,-27,-29,-30,-31


IEC Environmental: 721



GB14048

China standards and CCC Mark

ABS (American Bureau of Shipping



Germanischer Lloyds



CUL

Low-voltage AC Power Circuit Breakers

Section 2 – Product Specifications 13 March 14

Table 2.4. EntelliGuard G Non-Automatic Circuit Breaker: ANSI Version*

Table 2.5. EntelliGuard G Non-Automatic Circuit Breaker/Molded Case Switch: UL Version*

* GE internal quality testing requirements exceeded 20,000 mechanical and electrical operations.

Table 2.6. Key to Tables 2.2 through 2.5

Table 2.7. Agency Certification (All industry standards referenced in this table are the latest version at the time the
product is sold.)

*Suitable for use in UL1008 applications.

10 ©2012 General Electric All Rights Reserved

DEH-41304C EntelliGuard® G Circuit Breaker

Type

Design

Width

Depth

Height

Weight

in.

mm

in.

mm

in.

mm

lbs.

kg

3-pole

Envelope 1, Top Mounted, UL/ANSI

Fixed breaker - back connected

13.50

343

17.17

436

17.40

442

136.7

62

Drawout breaker - Moving portion

13.07

332

16.34

415

17.24

438

149.9

68

Cassette/substructure

13.50

343

20.83

529

17.44

443

110.2

50

Envelope 1, Side Mounted, UL/ANSI

Fixed breaker - back connected

16.14

410

17.17

436

15.98

406

136.7

62

Drawout breaker - Moving portion

15.35

390

16.34

415

15.83

402

149.9

68

Cassette/substructure

15.83

402

20.83

529

15.98

406

110.2

50

Envelope 2, Up to 2000A, UL/ANSI

Fixed breaker - back connected

17.17

436

17.17

436

17.40

442

165.3

75

Drawout breaker - Moving portion

17.01

432

16.34

415

17.24

438

176.4

80

Cassette/substructure

17.44

443

20.83

529

17.44

443

114.6

52

Envelope 2, Up to 3000A, UL

Fixed breaker - back connected

17.17

436

22.17

563

17.40

442

253.5

115

Drawout breaker - Moving portion

17.01

432

16.34

415

17.24

438

209.4

95

Cassette/substructure

17.44

443

26.14

664

17.44

443

231.5

105

Envelope 2, Up to 3200A, ANSI

Fixed breaker - back connected

17.17

436

22.17

563

17.40

442

275.6

125

Drawout breaker - Moving portion

17.01

432

16.34

415

17.24

438

209.4

95

Cassette/substructure

17.44

443

26.14

664

17.44

443

246.9

112

Envelope 3, Up to 4000A, ANSI/UL

Fixed breaker - back connected

28.98

736

17.17

436

17.40

442

286.6

130

Envelope 3, Up to 5000A ANSI / 6000A UL

Fixed breaker - back connected

28.98

736

22.17

563

17.40

442

463.0

210

Envelope 3, All Ratings

Drawout breaker - Moving portion

28.82

732

16.34

415

17.24

438

330.7

150

Cassette/substructure

29.25

743

26.14

664

17.44

443

396.8

180

Envelope 3-200kA, All Ratings

Drawout breaker - Moving portion

28.82

732

16.34

415

17.24

438

339.5

154

Cassette/substructure

29.25

743

26.14

664

20.47

520

407.8

185

4-pole

Envelope 1, Top Mounted, UL/ANSI

Fixed breaker - back connected

17.44

443

17.17

436

17.40

442

180.8

82

Drawout breaker - Moving portion

17.01

432

16.34

415

17.24

438

198.4

90

Cassette/substructure

17.44

443

20.83

529

17.44

443

143.3

65

Envelope 1, Side Mounted, UL/ANSI

Fixed breaker - back connected

20.08

510

17.17

436

15.98

406

180.8

82

Drawout breaker - Moving portion

19.29

490

16.34

415

15.83

402

198.4

90

Cassette/substructure

19.76

502

20.83

529

15.98

406

143.3

65

Envelope 2, Up to 2000A, UL/ANSI

Fixed breaker - back connected

22.28

566

17.17

436

17.40

442

220.5

100

Drawout breaker - Moving portion

22.13

562

16.34

415

17.24

438

242.5

110

Cassette/substructure

22.56

573

20.83

529

17.44

443

154.3

70

Envelope 2, Up to 3000A, UL

Fixed breaker - back connected

22.28

566

22.17

563

17.40

442

330.7

150

Drawout breaker - Moving portion

22.13

562

16.34

415

17.24

438

275.6

125

Cassette/substructure

22.56

573

26.14

664

17.44

443

308.6

140

Envelope 2, Up to 3200A, ANSI

Fixed breaker - back connected

22.28

566

22.17

563

17.40

442

363.8

165

Drawout breaker - Moving portion

22.13

562

16.34

415

17.24

438

275.6

125

Cassette/substructure

22.56

573

26.14

664

17.44

443

330.7

150

Envelope 3, Up to 4000A, ANSI/UL

Fixed breaker - back connected

38.03

966

22.17

563

17.40

442

385.8

175

Envelope 3, Up to 5000A ANSI / 6000A UL

Fixed breaker - back connected

38.03

966

22.17

563

17.40

442

617.3

280

Envelope 3, All Ratings

Drawout breaker - Moving portion

37.87

962

16.34

415

17.24

438

440.9

200

Cassette/substructure

38.31

973

26.14

664

17.44

443

529.1

240

Envelope 3-200kA, All Ratings

Drawout breaker - Moving portion

37.87

962

16.34

415

17.24

438

451.9

205

Cassette/substructure

38.31

973

26.14

664

20.47

520

542.3

246

13 March 14 Section 2 – Product Specifications

Table 2.8. Product Dimensions and Weights – ANSI/UL

©2012 General Electric All Rights Reserved 11

EntelliGuard® G Circuit Breaker DEH-41304C

WARNING

IMPROPER INSTALLATION, OPERATION AND
MAINTENANCE

Ensure only qualified personnel install, operate, service
and maintain all electrical equipment.

Failure to comply with these instructions could
result in death or serious injury.

WARNING

FALLING OBJECT

 Ensure lifting equipment has capability for device

being lifted.

 Wear hard hat, gloves and safety shoes.

Failure to comply with these instructions could
result in death or serious injury.

CAUTION

PRODUCT DAMAGE

 Ensure circuit breaker and its accessories are

always used within their designated ratings.

 Do not allow the circuit breaker to hit a hard

surface while handling.

 Do not drag or slide the circuit breaker across a

hard or rough surface.

Failure to comply with these instructions may result

in product damage.

NOTICE

A factory-installed rejection feature prevents
mismatching circuit breakers and
cassettes/substructures, preventing the insertion of a
circuit breaker with a lower rating into a higher rated
cassette/substructure, or the insertion of a higher
rated circuit breaker into a lower rated
cassette/substructure.

Section 3 – Lifting, Mounting and Installation 13 March 14

SECTION 3 – LIFTING, MOUNTING AND
INSTALLATION

6. Unscrew the mounting screws that fasten the circuit

breaker to the bottom of the shipping palette and
remove the circuit breaker.

Figure 3.1. Unpacking the Circuit Breaker

BASIC CIRCUIT BREAKER CONSTRUCTION (Figs. 3.2 and

3.3)

Figure 3.2. Circuit Breaker Construction A

CIRCUIT BREAKER UNPACKING (Fig. 3.1)

1. Inspect the shipping container for obvious signs of

rough handling and/or external damage incurred during
transportation.

2. Record any observed damage for reporting to the

carrier. Ensure all recorded reports and claims include
the order number and name plate information.

3. Remove the banding straps and lift off the top cover.

4. Remove all packaging material.

5. Remove all product documentation and store properly.

12 ©2012 General Electric All Rights Reserved

Figure 3.3. Circuit Breaker Construction B

EntelliGuard G circuit breakers consist of rigid front and rear
housings made of thermoset composite resins which
provide high structural strength and excellent dielectric
properties. These housings enclose a contact system
consisting of a moving portion and a fixed portion:

 Moving portion: comprised of multiple finger assemblies

connected to a conductor through flexible copper
connections. The number of finger assemblies depends

on the circuit breaker’s continuous and short circuit

ratings. Each finger assembly has an arcing contact and
a main contact.

DEH-41304C EntelliGuard® G Circuit Breaker

A

A Lifting eyes

A

A

Left Right

A M8 bolts

13 March 14 Section 3 – Lifting, Mounting and Installation

 Fixed portion: consists of a main fixed contact which is

brazed to a conductive pad, and arc runner which is
fastened to the conductive pad which guides the arc to
the arc chamber.

Each pole has an arc chamber comprised of arc chamber
molds which houses the de-ion plates and filtering system.
The pole configuration depends upon the breaker frame
size. For larger frames, the two pole units are connected
mechanically in parallel to form one phase.

The operating mechanism is mounted on the front housing.
The energy stored in the mechanism is used to close the
contact system. The mechanism is coupled to each pole by
a common layshaft/drive shaft.

The global trip unit measures CT current and compares the
output with set parameters. It gives a trip command during
overload and short circuit to trip the breaker within a
specified time, circuit monitors the current passing through
the circuit breaker and keeps a history of faults.

The fascia has interface buttons and features for safety
locks.

The cassette, which is used for drawout breakers, consists
of a mechanism which enables the circuit breaker to be
racked in and out, and houses the interlocks.

The front panel on the cassette has three markings which
indicate whether the breaker is in the CONNECTED, TEST or
DISCONNECTED position.

LIFTING AND MOUNTING

Using a Lifting Truck

Circuit breaker removal can be made easier by using a
specifically-designed lifting truck (Fig. 3.4). Contact the
nearest sales office for availability.

Figure 3.4. Lifting Truck

Drawout Cassette Lifting, Mounting and Installation

1. Place the cassette on a rigid, leveled appropriate

support on the switchboard. If a handling truck or
other lifting gear is used, install four. M10 lifting bolts
on to the M10 nuts available on the cassette channels
as shown in Fig. 3.5. Use all four lifting bolts at front
and rear of the cassette.

Figure 3.5. Cassette Lifting

2. Mount the cassette on to the switch board using six M8

bolts, nuts and lock washers through the mounting
holes shown in Fig. 3.6. Do not tighten.

3. Ensure the cassette side walls are square to the switch

board.

4. Tighten the mounting bolts to a torque of 25 N m at

the front and rear mounting points (Fig. 3.6).

Figure 3.6. Cassette Mounting

5. Ensure there is minimal deflection/stress to the back of

the cassette when connecting busbars.

6. Connect the incoming and outgoing cables/busbars.

7. Ensure any safety shutters move freely after the

cassette is installed.

Drawout Circuit Breaker Installation into the Cassette

1. Pull the lifting handles on both side walls of the circuit

breaker.

2. Attach the lifting bar between the two holes of the lifting

eyes as shown in Fig. 3.7.

©2012 General Electric All Rights Reserved 13

EntelliGuard® G Circuit Breaker DEH-41304C
Section 3 – Lifting, Mounting and Installation 13 March 14

Figure 3.7. Circuit Breaker Lifting

3. Remove any padlocks and keep the key in place for key

locks if applied from the racking panel of the cassette.

4. Ensure the cassette position indicator shows

DISCONNECTED and the racking handle is disengaged.

5. Ensure the cassette racking cams on both side walls of

the cassette are in the completely racked out position
as shown in Fig. 3.8.

Figure 3.8. Racking Drive in the DISCONNECTED Position

Figure 3.10. Circuit Breaker in Disconnected Position.

9. Push back both the extended rails of the cassette to the

stowed position.

10. If the circuit breaker is ON and the springs are charged,

press the OFF button on the circuit breaker fascia and
ensure the circuit breaker contacts are open (Fig. 3.11).

Figure 3.11. Setting the Circuit Breaker to OFF

6. Pull out the cassette rails until they drop into the

horizontal locked position.

7. Lower the circuit breaker gradually so that the rollers

drop over the rails. Ensure the grooves in all rollers
straddle the rails as shown in Fig. 3.9.

Figure 3.9. Circuit Breaker Rollers Straddled on the
Loading Rails

8. Using the hand grips on either side, remove the lifting

bar and push the circuit breaker into the cassette until
it reaches a positive stop (the rollers on circuit breaker
are engaged with the racking cams of the cassette on
both sides). The circuit breaker is now in the
DISCONNECTED position (Fig. 3.10).

11. Remove the racking tool from the storage location on

the cassette front panel by grabbing the handle (Fig.

3.12).

Figure 3.12. Racking Handle Storage Location

12. Pull out the torque bar from inside the handle and

extend (Fig. 3.13).

Figure 3.13. Racking Handle Extended

14 ©2012 General Electric All Rights Reserved

DEH-41304C EntelliGuard® G Circuit Breaker

DANGER

ELECTROCUTION

 Ensure the circuit breaker has been tripped, indicating

OFF, and the main springs are fully discharged.

 Do not touch the circuit breaker’s isolating contacts

during lifting.

Failure to comply with these instructions will result in
death or serious injury.

13 March 14 Section 3 – Lifting, Mounting and Installation

13. With a screwdriver, turn the racking handle shutter

drive A clockwise (Fig. 3.14).

Figure 3.14. Racking Handle Shutter Drive Location

14. Insert the racking handle in the handle insertion hole

on the cassette front panel.

15. Rotate clockwise to rack the circuit breaker into the

cassette. As the breaker approaches the TEST position
check the alignment of the fixed and moving parts of
the secondary circuit isolating contacts (Fig. 3.15).

Figure 3.15. Turning the Racking Handle

Circuit Breaker Removal from the Cassette

1. Repeat Steps 10 through 13 as explained in the previous

section. Insert the racking handle in the handle insertion
hole on the cassette front panel

2. Rotate counter clockwise to rack the circuit breaker out

of the cassette. As the circuit breaker approaches the
TEST position, check the alignment of the fixed and
moving parts of the secondary circuit isolating contacts.

3. Continue rotating the racking handle counter clockwise

until the position indicator first shows TEST, then
DISCONNECTED.

4. Pull out the cassette rails until they drop into the

horizontal locked position (Fig. 3.16).

Figure 3.16. Cassette Rails Pulled Out for Circuit Breaker
Unloading

16. Continue rotating the racking handle clockwise until

the position indicator first shows TEST, then
CONNECTED. When approaching the CONNECTED
position, effort to turn the racking handle will increase
as the clusters engage with the cassette-mounted
contacts. If a motor spring charge or under voltage to
release is installed, these may operate when
approaching the TEST position.

17. Remove and store the racking handle in its storage

location.

18. The circuit breaker is now ready for normal operation.

©2012 General Electric All Rights Reserved 15

5. Using the hand grips on either side, pull the circuit

breaker out of the cassette until it reaches a positive
stop (rollers on the circuit breaker will stop against the
extended rail projection as shown in Fig. 3.17).

Figure 3.17. Circuit breaker Pulled Out of the Cassette for
Unloading

EntelliGuard® G Circuit Breaker DEH-41304C

A

A Mounting Location

Section 3 – Lifting, Mounting and Installation 13 March 14

6. Attach the lifting bar to remove the circuit breaker.

Fixed-Mounted Circuit Breaker Mounting

1. Ensure adequate clearance above the circuit breaker

to allow removal of the arc chutes and inspection of
the arcing contacts.

2. Mount the circuit breaker into position, using the

mounting location shown in Fig. 3.18 and four M8
bolts, on a suitable support structure using. Torque to
25 N m. A clearly-marked grounding point is provided
on either side of the circuit breaker.

Figure 3.18. Mounting Location

TRIP UNIT

General Information

All EntelliGuard G power circuit breakers are equipped with
a digital electronic trip unit available in four basics versions
E, S, N, and H.

Each trip unit has a screen that provides an ammeter and a
menu-driven adjustment of the breaker parameters across
a broad current range. The menu has four settings and one
enter key, allowing fast and accurate setting of the device
(Fig. 3.19).

Figure 3.19. Trip Unit

Trip Unit Installation

1. The trip unit is mounted on the PMU base. Press the

lever and align the trip unit as shown in Fig. 3.20.

Figure 3.20. Trip Unit Being Mounted on the PMU Base.

2. Insert the trip unit knob on the PMU base as shown in

Fig. 3.21.

Fig 3.21. Trip Unit Knob

3. Release the lever once the trip unit is inserted. This

action will lock the trip unit to the PMU base as shown in
Fig. 3.22.

Figure 3.22. Trip Unit Alignment

16 ©2012 General Electric All Rights Reserved

4. Install the front cover as shown in Fig. 3.23.

Fig 3.23. Front Cover Installation

DEH-41304C EntelliGuard® G Circuit Breaker

A1

A2

A3

A4

A5

A6

A7

A8

A9

A10

A11

A12

A13

Motor

Motor

Spr NO/
RTC NO

Spr NO/
RTC NO

ST1

ST1

UV1

UV1

CC COM

CC IMM

CC CMD

ST2/
UV2

ST2/

UV2

Max. Current (I)

14.8 A

14.8 A

10 A

10 A

1.9 A

1.9 A

1.9 A

1.9 A

1.9 A

1.9 A

1.9 A

1.9 A

1.9 A

Max. Voltage (V)

440 V

440 V

240 V

240 V

440 V

440 V

440 V

440 V

440 V

440 V

440 V

440 V

440 V

A14

A15

A16

A17

A18

A19

A20

A21

A22

A23

A24

A25

A26

NC3

NC3

NC2

NC2

NC1

NC1

NO3

NO3

NO2

NO2

NO1

NO1 - Max. Current (I)

15 A

15 A

15 A

15 A

15 A

15 A

15 A

15 A

15 A

15 A

1 A

15 A

-

Max. Voltage (V)

440 V

440 V

440 V

440 V

440 V

440 V

440 V

440 V

440 V

440 V

440 V

440 V -

A27

A28

A29

A30

A31

A32

A33

A34

A35

A36

A37

A38

A39

O/P1a

O/P1b

O/P2a

O/P2b

24 V+

24 V-

BA NC

BA NO

BA COM

N-RC-

N-RC+

Eleg-CT

Eleg-CT

Max. Current (I)

1 A

1A

1 A

1 A

<500 mA

<500 mA

10 A

10 A

10 A

<50 mA

<50 mA

5 A

5 A

Max. Voltage (V)

30 Vdc/

25 Vac

30 dc/

25 Vac

30 Vdc/

25 Vac

30 Vdc/

25 Vac

30 V

30 V

240 V

240 V

240 V

480 mV

480 mV

2 V

2 V

B1

B2

B3

B4

B5

B6

B7

B8

B9

B10

B11

B12

B13

INPUT1

INPUT2

I/P

COM

ST1 NO/

NC8

ST1 COM/

NC8

UV1

NO/

NC7

UV1

COM/

NC7

NC6

NC6

NC5

NC5

NC4

NC4

Max. Current (I)

<50 mA

<50 mA

<50 mA

10 A/15 A

10 A/15 A

10 A/15 A

10 A/15 A

15 A

15 A

15 A

15 A

15 A

15 A

Max. Voltage (V)

30 Vdc/

25 Vac

30 Vdc/

25 Vac

30 Vdc/

25 Vac

240 V/

440 V

240 V/

440 V

240 V/

440 V

240 V/

440 V

440 V

440 V

440 V

440 V

440 V

440 V

B14

B15

B16

B17

B18

B19

B20

B21

B22

B23

B24

B25

B26

RELT

INPUT

COM

-

CC NO/

NO8

CC COM/

NO8

ST2 NO/

UV2 NO/

NO7

ST2 COM/

UV2

COM/

NO7

NO6

NO6

NO5

NO5

NO4

NO4

Max. Current (I)

<50 mA

<500 mA

-

10 A/

15 A

10 A/

15 A

10 A/

15 A

10 A/

15 A

15 A

15 A

15 A

15 A

15 A

15 A

Max. Voltage (V)

5 V

0.1V

-

240 V/

440 V

240 V/

440 V

240 V/

440 V

240 V/

440 V

440 V

440 V

440 V

440 V

440 V

440 V

B27

B28

B29

B30

B31

B32

B33

B34

B35

B36

B37

B38

B39

ZSI

out+

ZSI

out-

ZSI
in+

ZSI
in-

ISO

GND

5V

ISO

TX EN 1

RX

TX

GND

Volt-IN

Volt-A

Volt-B

Volt-C
Max. Current (I)

<50 mA

<50 mA

<50 mA

<50 mA

<500 mA

<500 mA

<50 mA

<50 mA

<50 mA

<500 mA

<50 mA

<50 mA

<50 mA

Max. Voltage (V)

28 Vdc

28 Vdc

30 Vdc

30 Vdc

0.1 V

5 V

5 V

5 V

5 V

0.1 V

1.76 V

1.76 V

1.76 V

C1

C2

C3

C4

C5

C6

C7

C8

C9

C10

C11

C12

C13

C14

C15

C16

C17

C18

C19

C20

C21

BA
NC

BA
NO

BA
COM

ST1
NO

ST1
COM

UV1
NO

UV1
COM

CC
NO

CC
COM

ST2/
UV2
NO

ST2/
UV2
COM

NO5

NO5

NO4

NO4

NC3

NC3

NC2

NC2

NC1

NC1

C22

C23

C24

C25

C26

C27

C28

C29

C30

C31

C32

C33

C34

C35

C36

C37

C38

C39

C40

C41

C42

Spr
NO/
RTC
NO

Spr
NO/
RTC
NO

ST1

ST1

UV1

UV1

CC
COM

CC
IMM

CC
CMD

ST2/
UV2

ST2/
UV2

NC5

NC5

NC4

NC4

NO3

NO3

NO2

NO2

NO1

NO1

13 March 14 Section 3 – Lifting, Mounting and Installation

WIRING

Tables 3.1 through 3.3 show the wiring schematic for Blocks-A, -B and -C. Table 3.4 provides information on the factory­installed network interlock feature and is for use by maintenance organizations for optional network interlock connections.
Table 3.5 provides nomenclature definitions for Tables 3.1 through 3.4.

Table 3.1. Wiring Schematic for Block-A (Three Layer Secondary Disconnect with Basic GTU and Basic Accessories)

Table 3.2. Wiring Schematic for Block-B (Three Layer Secondary Disconnect to be Added for GTU with Full I/O and
Additional Accessory Signals)

Table 3.3. Wiring Schematic for Block-C (Internal to the breaker, not used by customer.) (Two Layer Intermediate
Secondary Disconnect at the Top for the Side Mounted Secondary Disconnect.)

©2012 General Electric All Rights Reserved 17

EntelliGuard® G Circuit Breaker DEH-41304C

Network Interlock Connections

Network Interlock Status Switch

A5

A6

A7

A8

B4

B5

B6

NI TRIP

NI TRIP

NI RESET

NI RESET

NI NC

NI NO

NI COM

1.9 A

1.9 A

1.9 A

1.9 A

10 A

10 A

10 A

240 V

240 V

240 V

240 V

240 V

240 V

240 V

Pin

Nomenclature

Description

Pin

Nomenclature

Description

A1

Motor

power input to motor operator

B1

Input 1

relay input to trip unit

A2

Motor

B2

Input 2

relay input to trip unit

A3

SPR NO/RTC NO

spring charge status contact/
ready to close signaling contact

B3

I/P COM

relay input to trip unit

A4

SPR NO/RTC NO

B4

ST1 NO/NC8

shunt trip 1 signaling contact/normally
open contact 8

A5

ST1

power input to shunt trip 1

B5

ST1 COM/NC8

A6

ST1

B6

UV1 NO/NC7

under voltage release 1 signaling
contact/normally closed contact 7

A7

UV1

under voltage release 1
B7

UV1 COM/NC7

A8

UV1

B8

NC6

normally closed contact 6
A9

CC COM

closing coil neutral wire-common
(CC or CCC)

B9

NC6

A10

CC IMM

closing coil (CC), continuous
control power (CCC)

B10

NC5

normally closed contact 5
A11

CC CMD

closing coil close signal (CCC)

B11

NC5

A12

ST2/UV2

power input to shunt trip 2/under
voltage release 2

B12

NC4

normally closed contact 4
A13

ST2/UV2

B13

NC4

A14

NC3

normally closed contact 3
B14

RELT

RELT signal output

A15

NC3

B15

COM

trip unit communication

A16

NC2

normally closed contact 2
B16 - -

A17

NC2

B17

CC NO/NO8

closing coil signaling contact/normally
open contact 8

A18

NC1

normally closed contact 1
B18

CC COM/NO8

A19

NC1

B19

ST2 NO/UV2
NO/NO7

shunt trip 2 signaling contact/under
voltage release 2 signaling contact/
normally open contact 7

A20

NO3

normally open contact 3
B20

ST2 COM/UV2
COM/NO7

A21

NO3

B21

NO6

normally open contact 6
A22

NO2

normally open contact 2
B22

NO6

A23

NO2

B23

NO5

normally open contact 5
A24

NO1

normally open contact 1
B24

NO5

A25

NO1

B25

NO4

normally open contact 4
A26 - -

B26

NO4

A27

O/P1a

relay output 1 from trip unit

B27

ZSI out+

GF zone selective interlock output
A28

O/P1b

relay output 1 from trip unit

B28

ZSI out-

A29

O/P2a

relay output 2 from trip unit

B29

ZSI in+

GF zone selective interlock input
A30

O/P2b

relay output 2 from trip unit

B30

ZSI in-

A31

24 V+

auxiliary power supply to trip unit
B31

ISO GND

trip unit communication

A32

24 V-

B32

5V Iso

A33

BA NC

bell alarm switch
B33

TX EN 1

A34

BA NO

B34

RX

A35

BA COM

B35

TX

A36

N-RC-

neutral Rogowski coil
B36

Voltage Input
GND

ground point for voltage input to trip unit
A37

N-RC+

B37

Volt-A

system phase voltage signals
A38

Eleg-CT

earth leg CT (multi-source ground
fault)

B38

Volt-B

A39

Eleg-CT

B39

Volt-C

Section 3 – Lifting, Mounting and Installation 13 March 14

Table 3.4. Electronic Interlock

Table 3.5. Wiring Schematic Nomenclature Definitions

18 ©2012 General Electric All Rights Reserved

DEH-41304C EntelliGuard® G Circuit Breaker

Number of Terminals

78

Terminal capacity

1x

2x

Screw type (bare
conductors)

12 AWG,

solid or stranded

-

Screw type (bare
conductors)

22 AWG to 14 AWG,

0.5 mm² to 2.5 mm²

Ring/spade terminals

20 AWG to 12 AWG

-

13 March 14 Section 3 – Lifting, Mounting and Installation

SECONDARY DISCONNECT BLOCKS

 Located for easy customer wiring to the accessories

and to the trip unit:

- Top-mounted for all envelopes.

- Optional side mounting is available for UL

envelope 1.

 In case of drawout, by removing one screw, the

cassette-mounted secondary disconnect block can be
tilted in the mounted state and can be removed for
easy control circuit wiring (Fig. 3.24).

Figure 3.24. Secondary Disconnect

 Block-A contains a set of 39 self-aligning secondary

circuit isolating contacts. Each contact is clearly
labeled with the connection point. For certain
protection configurations and additional accessories,
an additional block (Block-B) is installed.

 Current rating of each terminal is 10 A/240 Vac and

5 A/250 Vdc.

 Terminals are suitable for ring or spade terminals and

bare conductors (Table 3.6). Recommended max. width
or diameter of the connector is 7.4 mm.

 Connector examples:

- Ring terminals: TYCO-35684 (wire gauge 14-12)

- Spade terminals: TYCO-34384 (wire gauge 12-10)

- Molex-0190690230 (wire gauge 10-12)

Table 3.6. Terminal Wiring

SELECTIVITY/BACKUP PROTECTION

 The circuit breaker is time-selective with the

downstream ACB and MCCBs up to the lowest of the
breaking capacity of the combination.

 Selectivity levels are determined by the selection

settings of short time and instantaneous pickup and
time delay on the Trip Unit.

 No backup protection/cascading (series ratings) is

available with this product.

©2012 General Electric All Rights Reserved 19

EntelliGuard® G Circuit Breaker DEH-41304C

WARNING

IMPROPER INSTALLATION, OPERATION AND
MAINTENANCE

Ensure only qualified personnel install, operate, service
and maintain all electrical equipment.

Failure to comply with these instructions will result in
death or serious injury.

WARNING

PERSONAL INJURY

 Avoid risk of injury from moving parts while handling

the breaker.

 If advisable, use a cable/busbar lockable grounding

device (optional accessory) to provide additional safety
during system maintenance.

Failure to comply with these instructions could result in
death or serious injury.

CAUTION

PRODUCT DAMAGE

 Ensure circuit breaker and its accessories are always

used within their designated ratings.

 Use the specially designed circuit breaker handling

truck (optional accessory) when removing the circuit
breaker from its cassette.

Failure to comply with these instructions may result in

product damage.

NOTICE

 Each charging action provides sufficient charge for an

O-C-O (Open-Close-Open) operation without requiring
additional charging.

 The mechanism works properly only when the circuit

breaker is mounted on a horizontal plane with bottom
mounting or on vertical plane with front mounting.

ON/OFF

Indicator

Main Breaker

Contacts

Charging Spring

Indicator

Condition of

Charging Springs

Next Permissible Operating Function

OFF

open

discharged

discharged

closing springs may be charged

OFF

open

charged

fully charged

contacts may be closed, then opened

ON

closed

discharged

discharged

contacts may be opened or closing springs may be charged

ON

closed

charged

fully charged

pen-closed-open sequence may be carried out and the closing
springs can be charged after the close operation opened

OFF

open

charged

fully charged

closing spring may be discharged without closing contacts

ON

closed

charging

partially charged

complete charging

OFF

open

charging

partially charged

complete charging

Section 4 – Operation 13 March 14

SECTION 4 – OPERATION

STORED ENERGY MECHANISM KEY FEATURES (Table 4.1)

Circuit Breaker Charging

The circuit breaker can be charged in one of two ways:

 Manually, using a charging handle.

- The charging handle lies flush within the circuit

breaker front cover. It is easily retracted without
special tools.

- Full spring charging is accomplished with 10 full

pumps or less of the handle. Handle movement
includes suitable stops so that it cannot be over
extended and cause operator injury.

- The handle engages the charging ratchet during

motion away from the circuit breaker front cover
and rotates freely on the return stroke.

 Electrically, via a motor operator that is automatically

activated after the closing operation.

Two Step Mechanism Design

 The first step charges the closing spring through the

manual charging handle or through the spring
charging motor.

 The second step closes the circuit breaker via the

PUSH ON (UL)/CLOSE (ANSI) pushbutton on the front
cover or closes the breaker through energizing the
closing coil.

 The mechanism is trip free and incorporates an anti-

pumping system:

- The circuit breaker may be closed only after the

mechanism is fully charged and there is no active
open command.

- The closing coil has an electrical anti-pumping

feature. The coil supply, if maintained
continuously, will attempt to close the circuit
breaker only one time. To achieve a second
closing attempt, the closing coil must be de­energized and energized a second time.

Table 4.1. Stored Energy Mechanism Sequences of Operation

20 ©2012 General Electric All Rights Reserved

DEH-41304C EntelliGuard® G Circuit Breaker

Circuit Breaker

Position in the

Cassette

Primary

Disconnects

Secondary

Disconnects

Circuit Breaker Functionality

Circuit Breaker

Door Position

CONNECTED

engaged

engaged

 circuit breaker may be operated both mechanically or electrically
 ready for service

closed

TEST

disengaged

engaged

 circuit breaker may be operated both mechanically or electrically
 circuit breaker and control circuit operations may be tested and

verified

closed

DISCONNECTED

disengaged

disengaged

 circuit breaker may be operated only mechanically
 circuit breaker may not be removed from the circuit breaker

compartment

closed

WITHDRAWN

disengaged

disengaged

 circuit breaker may be operated only mechanically
 circuit breaker may be removed from the circuit breaker

compartment

open

13 March 14 Section 4 – Operation

CLOSING SPRING DISCHARGE PROCEDURE (Table 4.2)

The main spring may be discharged (also known as
“crashing the mechanism”) without closing the breaker by
using a special tool operated through a small window on
the front cover.

One of the following safety-related capabilities should be
provided per the applicable ANSI standard:

 Drawout version only:

- ANSI versions: The mechanism closing springs

are automatically discharged (crashed) when the
circuit breaker is moved from the DISCONNECT
position to the WITHDRAWN fully disconnected
position and vice versa.

- UL and IEC versions. The automatic spring

discharge feature is optional.

 Fixed-mounting and drawout versions:

- The front cover has a label indicating the

position of the hidden spring charged indicator
button and clearly indicates that the springs
must be discharged prior to any maintenance
activity or circuit breaker disassembly.

The closing springs must be discharged prior to removal
of the arc-chute cover.

Table 4.2. Cassette Operating Positions

CLOSING PROCEDURE

 Pull the charging handle out and down to charge the

closing springs (requires approximately 10 pumps of
the handle to fully charge).

 If a motorized spring charging unit is installed, the

springs will be automatically charged as soon as the
motor is energized.

 Pressing the ON pushbutton or energizing the

closing coil (if installed) will close the circuit breaker.

CONDITIONS WHEN CLOSING CANNOT OCCUR

 The OFF button is in a depressed position.
 The trip unit is not installed.
 If racking handle is inserted, remove it.
 The breaker is positioned anywhere between

CONNECTED, TEST and DISCONNECTED positions.

 Trip unit reset button is protruding from the front

cover. Press the reset button.

 An under voltage release is installed but not

energized.

 A key interlock (Ronis, Profalux, Castell, etc.) or direct

inter-breaker mechanical interlock is operating on
the breaker.

CIRCUIT BREAKER OPENING PROCEDURE

 Press the OFF pushbutton or energize the shunt trip

coil (if installed).

 Tripping under fault conditions will be automatic

depending on the protective device installed and its
settings.

©2012 General Electric All Rights Reserved 21

EntelliGuard® G Circuit Breaker DEH-41304C

DANGER

ELECTROCUTION

Ensure the circuit breaker has been tripped, indicating
OFF, and the main springs are fully discharged before
installing locks and interlocks.

Failure to comply with these instructions will result
in death or serious injury.

WARNING

IMPROPER INSTALLATION, OPERATION AND
MAINTENANCE

Ensure only qualified personnel install, operate,
service and maintain all electrical equipment.

Failure to comply with these instructions could
result in death or serious injury.

WARNING

PERSONAL INJURY

 Avoid risk of injury from moving parts while

handling the circuit breaker.

Failure to comply with these instructions could
result in death or serious injury.

CAUTION

PRODUCT DAMAGE

 Ensure the circuit breaker and its accessories are

always used within their designated ratings.

 Use the specially-designed circuit breaker handling

truck (optional accessory) when removing the
circuit breaker from its cassette.

Failure to comply with these instructions may result

in product damage.

NOTICE

Ensure all padlocks are scissor compatible.

Section 5 – Locks and Interlocks 13 March 14

SECTION 5 – LOCKS AND INTERLOCKS

CIRCUIT BREAKER FRONT PANEL LOCKING

Pushbutton Locking

This function denies unauthorized access to ON/OFF
pushbuttons.

1. Ensure padlock shaft diameter is 3 mm to 9.5 mm.

2. Raise the appropriate window(s) and pass padlock hasp

through the locking eye (Fig. 5.1).

Figure 5.1. Pushbutton Padlock Location

Padlock or Scissor Lock for Breaker Trip Free Condition

1. While pressing the OFF pushbutton, pull out the

padlock lever.

2. Pull the padlock lever out.

3. Ensure padlock shaft diameter is 3 mm to 9.5 mm.

4. Insert padlock hasp (Fig. 5.2).

Figure 5.2. Padlock for Breaker Trip Free Condition

GENERAL INFORMATION

A variety of locks and interlock accessories are available.
The operation of most of these accessories is described in
this section.

22 ©2012 General Electric All Rights Reserved

DEH-41304C EntelliGuard® G Circuit Breaker

A Security Locking Bar

A

13 March 14 Section 5 – Locks and Interlocks

Key Lock for Breaker Trip Free Condition

A total of four key locks (Ronis/Profalux/Kirk and one Castel
lock) can be installed.

1. Press the OFF pushbutton until the padlock lever is

pulled out

2. Pull the padlock lever and remove the key from lock by

rotating it in counterclockwise direction (Fig. 5.3).

Figure 5.3. Key Lock for Breaker Trip Free Condition

DRAWOUT CASSETTE FRONT PANEL LOCKING

Security Locking

This function locks the entry of the racking handle in the
crank insertion hole of the cassette front panel when the
padlock is installed when circuit breaker in the
DISCONNECTED/ CONNECTED position. Up to three
padlocks (shaft diameter of 3 mm to 9.5 mm) may be
installed for additional security (Fig. 5.4).

Figure 5.4. Circuit Breaker Security Padlocking Location

Figure 5.5. Padlock Insertion and Lock-Out on the
Security Locking Bar

4. Using a screwdriver, turn the racking handle

shutter drive A clockwise.

Isolation Shutters Locking (If Installed)

This function locks the operation of the safety shutters
when the pad lock is installed on the security locking
bar B only when the cassette is in the DISCONNECTED
position. Only one padlock (shaft diameter of 3 mm to

9.5 mm) may be installed.

1. Ensure the position indicator shows the

DISCONNECTED/CONNECTED position.

2. Remove the racking handle from the operating

position.

3. Pull the locking bar until the locking eye is

exposed and hold while inserting the padlock
hasp (Fig. 5.6).

Figure 5.6. Padlock Insertion and Lock-Out on the
Security Locking Bar

1. Ensure the position indicator shows the

DISCONNECTED/CONNECTED position.

2. Remove the racking handle from the operating

position.

3. Pull the locking bar until the locking eye is exposed

and hold while inserting the padlock shaft (Fig. 5.5).

©2012 General Electric All Rights Reserved 23

1. Using a screwdriver, turn the racking handle

shutter drive clockwise.

2. Check installation by trying to lift the front shutter

plate up and down (for horizontal terminations) or
sliding it left to right (for vertical terminations)
which are installed on the cassette in front of the
terminals (Fig. 5.7).

EntelliGuard® G Circuit Breaker DEH-41304C

A End of spring locates below Circlip
B Spring pin
C Circlip
D End of spring fits below boss in inside of lever
E Fulcrum boss with Circlip

Section 5 – Locks and Interlocks 13 March 14

Fig. 5.7. Safety Shutter in Closed Position

Door Interlock Installation

A door interlock mechanism may be installed inside the
cassette on the right for L/H (left-hand) hinged door or left
for R/H (right-hand) hinged door. Specify whether the door
is L/H or R/H hinged when ordering interlock kits (Figs. 5.8
and 5.9). Each kit contains:

 One interlock lever
 One helical spring
 Door Catch Assembly
 Washers
 Circlips

Figure 5.8. Door Interlock Pack Contents

Figure 5.9. Door Interlock Showing both L/H and R/H Sets

To assemble (Fig. 5.10):

1. Place the spring over the pivot pin protruding from

cassette side plate.

2. Position interlock lever as shown. Ensure one end of

spring is located below the nut and the other rests over
the small boss on the lever.

3. While holding the interlock lever in position: Insert two

Circlip into the groove in the pivot pins and secure.

Figure 5.10. Door Interlock Assembly)

4. Mount the door catch assembly to the panel door using

2 X M5 – 8 long socket head screws, lock washers
through the mounting holes shown in Fig. 5.11 and Fig.

5.12. Tighten the bolts to a torque of 8 N m on the panel
door.

Figure 5.11. Left-Hand Hinged Board Door Bracket
Location Detail

24 ©2012 General Electric All Rights Reserved

DEH-41304C EntelliGuard® G Circuit Breaker

Top

Circuit

Breaker

Bottom

Circuit

Breaker

“A” cm

10 cm (Min.) Cable

13 March 14 Section 5 – Locks and Interlocks

Figure 5.12. Right-Hand Hinged Board Door Bracket
Location Detail

5. Ensure the circuit breaker is in the DISCONNECTED

POSITION.

6. Close the panel door. Ensure the interlock lever is in the

lifted position.

7. Close the door and rack-in the circuit breaker in the

cassette. Follow steps 7 thru 12 in the section “Drawout
Circuit Breaker Operation“ already illustrated for
racking the circuit breaker in the cassette.

8. After reaching CONNECTED position, test the now

locked panel door to ensure it does not open.

KEY LOCKS AND INSTALLATION

Two types of key locks fit on the cassette (Figs. 5.13 and

5.14).

 Profalux
 Ronis

Figure 5.13. Profalux Key Interlock

Figure 5.14. Ronis Key Interlock

TWO-BREAKER CABLE INTERLOCK INSTALLATION

Figs. 5.15 and 5.16 provide information needed to calculate
the correct cable length. More information on three-breaker
and other combinations of cable interlocks is available on
request.

Vertical Mounting (Fig. 5.15)

1. Cassette pitch “A” is from the bottom face of one

cassette to the bottom face of the other. Dimension
“A” must be no less than 60 cm.

2. Ensure that the minimum cable radius is not less than

125 mm. Minimum cable length is “A” + 100 cm.
Longer cables may be used; however, they must be
free from obstruction and no longer than 3 m.

Figure 5.15. Vertical Mounting Dimensions

©2012 General Electric All Rights Reserved 25

EntelliGuard® G Circuit Breaker DEH-41304C

Circuit

Breaker 1

Circuit

Breaker 2

“A”

cm

14 cm (Min.) Cable

A

A Shutter locking bar

Function

Number and Type of Padlocks/Locking Devices

Padlock Shaft Diameter

Padlock for “ON” pushbutton restricting access to

the button in raised position

maximum of one lock of may be mounted

3 mm to 9.5 mm

Padlock for “OFF” pushbutton restricting access

to the button in depressed state to block ON
operations

maximum of one lock of may be mounted

3 mm to 9.5 mm

Padlock for breaker trip free condition

maximum of three locks may be mounted

3 mm to 9.5 mm

Breaker Key Lock in OPEN position (Optional)

 maximum of four key locks of any one type

(optional Kirk/Ronis/Profalux) may be used

 maximum one of Castle lock may be installed

N/A

Function

Number and Type of Padlocks/Locking Devices

Padlock Shaft Diameter

Racking mechanism screw access blocking
padlock in DISCONNECTED/TEST/CONNECTED
positions

three locks may be mounted in one slot

3 mm to 9.5 mm

Racking mechanism screw access blocking and
breaker trip free position key lock in
DISCONNECTED/TEST/CONNECTED positions
(Ronis/Profalux)

maximum of two locks

3 mm to 9.5 mm

Padlocking provisions on the drawout rails
prevent unauthorized installation of a breaker
that has been removed from the cassette for
equipment or load maintenance.

maximum of three padlocks

3 mm to 9.5 mm

Section 5 – Locks and Interlocks 13 March 14

Horizontal Mounting (Fig. 5.16)

1. Measure distance ”A” from the right hand face of one

cassette to the right hand face of the other.

2. Ensure the minimum cable radius is not less than

125 mm. Cable length is “A” + 67 cm. Longer cables

may be used; however, they must be free from
obstruction and no longer than 3 m.

Figure 5.16: Horizontal Mounting Dimensions

Table 5.1. Fixed-Mounted Circuit Breaker Locking

SAFETY SHUTTERS INSTALLATION (Fig. 5.17)

1. Ensure circuit breaker is in the DISCONNECTED position

and the racking handle is removed.

2. Pull out the top or bottom shutter locking bar, or both

as required, to reveal the locking eye.

3. Hold while inserting padlock(s). (Shaft diameter is 6 mm

min. to 8 mm max.).

4. Apply the provided “BUSBAR” and “CIRCUIT” designation

labels.

Figure 5.17. Shutter Padlocking

Table 5.2. Drawout Circuit Breaker Locking

26 ©2012 General Electric All Rights Reserved

DEH-41304C EntelliGuard® G Circuit Breaker

WARNING

IMPROPER INSTALLATION, OPERATION AND
MAINTENANCE

Ensure only qualified personnel install, operate, service
and maintain all electrical equipment.

Failure to comply with these instructions could
result in death or serious injury.

Envelope

Power

Consumption

Nominal Control

Voltage

IEC Range (85% to 110%)

ANSI Range

UL Range

(85% to 110%)

Cat No.

1

DC – 300 W

24 Vdc/30 Vdc

20.4 V to 26.4 V

-

20.4 V to 26.4 V

GM0124DR

48 Vdc

40.8 V to 52.87 V

38 V to 56 V

40.8 V to 52.87 V

GM01048DR

60 Vdc

51 V to 66 V

-

51 V to 66 V

GM01060DR

72 Vdc

61.2V to 79.2 V

-

61.2 V to 79.2 V

GM01072DR

110 Vdc/130 Vdc

106.25 V to 137.5 V

100 V to 140 V

106.25 V to 137.5 V

GM0113ODR

250 Vdc

212.5 V to 275 V

200 V to 280 V

212.5 V to 275 V

GM01250DR

AC – 350 VA

48 Vac

40.8 V to 52.87 V

-

40.8 V to 52.87 V

GM01048AR

120 Vac

102 V to 132 V

104 V to 127 V

102 V to 132 V

GM01120AR

240 Vac

204 V to 264 V

208 V to 254 V

204 V to 264 V

GM01240AR

277 Vac

235.5 V to 304.7 V

-

235.5 V to 304.7 V

GM01277AR

2 and 3

DC – 480 W

24 Vdc/30 Vdc

20.4 V to 26.4 V

-

20.4 V to 26.4 V

GM0224DR

48 Vdc

40.8 V to 52.87 V

38 V to 56 V

40.8 V to 52.87 V

GM02048DR

60 Vdc

51 V to 66 V

-

51 V to 66 V

GM02060DR

72 Vdc

61.2 V to 79.2 V

-

61.2 V to 79.2 V

GM02072DR

110 Vdc/130 Vdc

106.25 V to 137.5 V

100 V to 140 V

106.25 V to 137.5 V

GM0213ODR

250 Vdc

212.5 V to 275 V

200 V to 280 V

212.5 V to 275 V

GM02250DR

AC – 560 VA

48 Vac

40.8 V to 52.87 V

-

40.8 V to 52.87 V

GM02048AR

120 Vac

102 V to 132 V

104 V to 127V

102 V to 132 V

GM02120AR

240 Vac

204 V to 264 V

208 V to 254 V

204 V to 264 V

GM02240AR

27 Vac

235.5 V to 304.7 V

-

235.5 V to 304.7 V

GM02277AR

 Spring charge contact is power rated only, as shown below.

AC Ratings

DC Ratings

Voltage

Amps

Voltage

Amps

110 V-130 V

AC21-15 A

24 V

DC21-15 A

AC23-10 A

110 V-130 V

DC21-10 A

220 V -240 V
AC21-10 A

250 V

DC21-5 A

AC23-5 A - -

 Spring charge time = 3 sec max.
 Recommended fuse amps: contact factory.
 Duty cycle = 2/min.
 Envelope 1 motors: running VA ~ 300 VA; inrush = 2 to 3 times.
 Envelope 2 and 3 motors: running VA ~ 450 VA; inrush = 2 to 3 times.

13 March 14 Section 6 – Accessories Description

SECTION 6 – ACCESSORIES DESCRIPTION

GENERAL INFORMATION

A wide range of optional accessories are interchangeable
across all EntelliGuard G power circuit breakers, regardless
of nominal rating or envelope/frame size. Each accessory
incorporates easy-fit design features for quick installation,
either at the factory or in the field (Fig. 6.1).

NOTE: Replacement accessories have an “R” at the end of

the catalog number as shown.

Table 6.1 Motor Operators

Figure 6.1. Accessory Mounting

INDIVIDUAL ACCESSORIES

Motorized Spring Charging Unit

The unique motor/gearbox unit is specially designed to
operate with the full range of EntelliGuard G. It is easily
fitted with three heavy-duty bolts. After a breaker close
operation, the unit automatically recharges the spring and
makes it ready for immediate open and re-close should the
need arise. High speed recharging ensures that the springs
are fully charged within approximately three seconds
following a release. All electrically operated (EO) ANSI/UL

breakers are equipped with “Spring Charged” contacts

(GSCC1R) for status indication (Table 6.1).

©2012 General Electric All Rights Reserved 27

EntelliGuard® G Circuit Breaker DEH-41304C

Type

Power

Consumption

Nominal Control

Voltage

Catalog

Number

Closing

Coil

DC: 350 W,

20 W (sealed)

AC: 350 W

(inrush),

20 W (sealed)

24/30 Vdc

GCCN24DR

40 Vdc; 48 Vac/dc

GCCN048R

60Vdc

GCCNM060DR

70 to 72 Vac/Vdc

GCCN072R

110/130/120 Vac

GCCN120R

208 Vac

GCCN208AR

220 Vdc/240 Vac

GCCN240R

250 Vdc/277 Vac

GCCN277R

Command

Operated

Closing

Coil

DC: 350 W,

20 W (sealed)

AC: 350 W

(inrush),

20 W (sealed)

24/30 Vdc

GCCC24DR

40 Vdc; 48 Vac/dc

GCCC048R

60 Vdc

GCCCM060DR

70 to 72 Vac/Vdc

GCCC072R

110/130/120 Vac

GCCC120R

208 Vac

GCCC208AR

220 to 250 Vac/Vdc/249 Vac

GCCC240R

Nominal Control Voltage

Catalog Number

24 Vdc

GSTG024DR

48 Vac/dc

GSTG048R

70/72 Vdc

GSTG072DR

110 Vdc/120 Vac

GSTG120R

125 Vdc

GSTG125DR

208 Vac

GSTG208AR

240 Vac

GSTG240R

250 Vdc/277 Vac

GSTG277R

Type and

Configuration

Rating

Cat. No.

1 Power rated +
1 Low signal (Hi-Fi)
(1NO contact each)

AC

120 Vac

6 A

GCSP1R

250 Vac

6 A

DC

125 Vac

0.5 A

250 Vdc

0.25 A

AC

125 Vac

0.1 A

DC

30 Vdc

0.1 A

2 Low signal (Hi-Fi)
(1NO contact each)

AC

125 Vac

0.1 A

GCSP2R

Section 6 – Accessories Description 13 March 14

Circuit Breaker Closing Coils – Standard and Commanded

Two, easy-to-fit, clip-on closing coil options with simple,
plug-in connections are available. Both options offer
electrical remote release of the spring charged closing
mechanism. Both options include a standard anti-pump
safety feature ensuring that the remote signal must be
released before further close commands are allowed. The
Command Close Coil additionally provides for local
electrical command of the accessory and remote
command over communications via the EntelliGuard trip
unit (Table 6.2).

Table 6.2. Closing Coil Characteristics

Table 6.3. Extended Range Shunt Trip for UL Ground Fault
and ANSI DC Rating Applications.

 Pickup range = 55%-110%.
 Duty cycle = 2/min.
 Inrush = 480 A (ac), 480 W (dc).
 Holding = 60 VA (ac), 50 W (dc).

Status Indication Switch (Coil Signaling Contact)

A plug-in module is available to provide status indication via
the secondary disconnects and trip unit. Coil Signaling
Contacts are available for closing coils, shunt trips and under
voltage releases, see Table 6.4. Contac t is mounted on top of
the Accessory Device.

Table 6.4 Coil Signaling Contact Module

 Duty cycle = 2/min.
 Closing coil inrush = 350 VA.

Command Operation Module

This module energizes the closing coil to cause the breaker
to close whenever control power is applied to the
accessory and when commanded from the breaker trip
unit or breaker front panel push button (electrical closing).

Shunt Trip (ST)

Energizing the shunt trip, via local or remote input, will
instantaneously activate the circuit breaker mechanism,
ensuring a rapid open operation. The standard auxiliary switch
ensures automatic isolation whenever the circuit breaker is
open. The shunt trip release is a straightforward, field installable
accessory available in wide range of voltages (Table 6.3).

28 ©2012 General Electric All Rights Reserved

Under Voltage Release (UVR) With Fixed Time Delay

The UVR instantaneously activates the circuit breaker trip
mechanism when the source voltage drops below the low
voltage threshold. The UVR is also a simple, field installable
device. NOTE: This accessory acts as a permissive; it is a no­voltage/no-close device. The circuit breaker cannot be closed
(manually or electrically) unless the under voltage release coil
is energized above the required threshold. The UVR shunt trip
with fixed time delay is specifically intended for applications
where a delay period (ride-through) is required due to
potential voltage events. The delays are 50 ms when system
voltage drops to 50% and 20 ms when system voltage drops
below 50%. See Table 6.4. (A Time Delay Module is also
available, see next page).

DEH-41304C EntelliGuard® G Circuit Breaker

Power

Consumption

Nominal Control

Voltage

Catalog

Number

DC: 350 W,

20 W (sealed)

AC: 350 W

(inrush),

20 W (sealed)

24/30 Vdc

GUVT030DR

40 Vdc; 48 Vac/dc

GUVT048R

60 Vdc

GUVTO60DR

110/130/120 Vac

GUVT130R

208 Vac

GUVT208AR

220 Vdc/240 Vac

GUVT240R

250 Vdc/277 Vac

GUVT277R

Nominal Control Voltage

Catalog No.

48VDC

GTDM048D

48VAC

GTDM048A

60VDC

GTDM060D

120VDC

GTDM120D

120VAC

GTDM120A

208VAC

GTDM208A

240VDC

GTDM240D

240VAC

GTDM240A

250VDC

GTDM250D

277VAC

GTDM277A

Combination

Coil Position on Fascia (from left)

1 2 3 4 1

-

shunt

CC

UV 2 shunt

shunt

CC

UV 3 shunt

UV

CC

UV

Contact Configuration

Cat. No.

Power rated (3NO+3NC)

GAUX3R

Power rated (3NO+3NC) + low signal (Hi-Fi)
(2NO+2NC)

GAUX5R

Power rated (8NO+8NC)

GAUX6R

Power rated (4NO+4NC) + low signal (Hi-Fi)
(4NO+4NC)

GAUX8R

Contact Configuration

Power

Rated

Hi-Fi

Cat. No.

Power rated
(3NO+3NC)

A14 - A25

N/A

GAUX3R

Power rated (3NO+3NC) +
low signal (Hi-Fi)
(2NO+2NC)

A14 - A25

B10 - B13,

B23 - B26

GAUX5R

Power rated
(8NO+8NC)*

A14 - A25,

B4 - B13,

B17 - B26

N/A

GAUX6R

Power rated (4NO+4NC) +
low signal (Hi-Fi)
(4NO+4NC)*

A14 - A25,
B12 - B13,

B25 - B26

B4 - B11,

B17 - B24

GAUX8R

13 March 14 Section 6 – Accessories Description

Table 6.5. UVR Operating Characteristics

 Duty cycle = 2/min.
 Inrush = 350 VA (ac), 350 W (dc).
 Holding = 60 VA (ac), 50 W (dc).

Time Delay Module (TDM) for UVR (Externally Mounted)

The de-energized operation of the Under Voltage release can
be delayed. This optional, externally mounted module has an
adjustable time delay of 0 s to 3 s. The device can be
implemented to prevent undesired breaker tripping due to
momentary voltage interruptions and is connected in series
with the Under Voltage release. The time delay is in addition
to the time delay from the breaker mounted UVR accessory.
The time delay module starts counting at 50% of rated
voltage (Fig. 6.2 and Table 6.6).

Figure 6.2. Time Delay Module

Remote Operation Coil Combination

Each breaker accepts a maximum of four coils in the
combinations shown in Table 6.7. All coils are mounted from
the front and snap onto the mechanism after the fascia is
removed.

Table 6.7. Remote Operation Coil Combination

Auxiliary Switches

Auxiliary switches indicate breaker main contact position.
They change their state in the same time sequence as the
breaker main contacts. See Tables 6.8 and 6.9 for available
combinations and ratings.

Table 6.8. Auxiliary Switches

Table 6.9. Auxiliary Switch Ratings and Secondary
Disconnect Points

Table 6.6 TDM Characteristics

©2012 General Electric All Rights Reserved 29

*Options are not available for side mounted sec disc blocks.
 High Fidelity refers to gold-plated contacts. Use for signal level outputs

(10 mA min to 100 mA max., 8 Vdc to 30 Vdc, 125 Vac.

EntelliGuard® G Circuit Breaker DEH-41304C

Description

Catalog Number

Baseplate and mechanism for Ronis locks
(breaker mounted)

GBRONR

Baseplate and mechanism for Kirk Key locks
(breaker mounted) (Question on markup.)

GBKRKR

Mechanism for Ronis key cassette interlock
(cassette mounted)

GCRONR

Mechanism for Kirk key cassette interlock
(cassette mounted)

GCKRKR

Door interlock (left side)

GLHD

Door interlock (right side)

GRHD

Switch Configuration

Catalog Number

1 NO/NC switch per position

GCPS1R

Set of 2 No/NC switches per position

GCPS2R

Ratings

AC
120 Vac

6 A

250 Vac

6 A

DC
125 Vac

0.5 A

250 Vac

0.25 A

Interlock

Type

Number of

Cables

Required

Breaker Type

Poles

Catalog

Number

2 Way –

Type A

2

withdrawable

3

GI2WADR

4

GI3WADR

fixed

3

GI2FADR

4

GI3FADR

1 from 3

Type B

6

withdrawable

3

GI2WBR

4

GI3WBR

fixed

3

GI2FBR

4

GI3FBR

2 from 3

Type C

6

withdrawable

3

GI2WCR

4

GI3WCR

fixed

3

GI2FCR

4

GI3FCR

1 from 3

Way –

Type D

4

withdrawable

3

GI2WDTR

4

GI3WDTR

fixed

3

GI2FDTR

Length

Catalog Number

Meters

Inches

1

39.4

GCB1

1.6

63

GCB2

2

78.7

GCB3

2.5

98.4

GCB4

3

118.1

GCB5

3.5

137.8

GCB6

4

157.5

GCB7

Section 6 – Accessories Description 13 March 14

Circuit Breaker - Key Interlock Facility

This option provides factory-installed interlocking devices for
installation between separate circuit breakers (baseplates and
mechanism). This safeguard ensures that a circuit breaker
cannot be closed unless the dedicated key has been inserted
and secured within the lock. Circuit breakers accept ready-to-fit
interlocking device kits such as Castell, Ronis, Kirk and Profalux
for installation between related, separate circuit breakers (Table

6.10).

NOTE: Locks and keys are not supplied by GE. Please order
separately from your local supplier.

Table 6.10. Key Interlocks and Door Interlocks

Mechanical Interlocks (Cable/Rod)

Available for fixed and drawout circuit breakers, these units
enable the direct interlocking of EntelliGuard G circuit
breakers, either mounted side-by-side or stacked. The
interlocking mechanisms are connected by a specially designed
cable or rod in a 1 from 2, 1 from 3, and 2 from 3
configuration, and any mix of current ratings/pole
configurations can be accommodated. Standard cable lengths
available: 1.0 m, 1.6 m, 2.0 m, 2.5 m, 3.0 m, 3.5 m and 4.0 m.
(Please contact our technical customer service department if
longer length is required.)

Mechanical interlocks can be fitted to electrical systems as
shown in Table 6.13 and can link 2 and/or 3 circuit
breakers. Any nominal rating, frame size, number of poles
or type (fixed pattern or draw-out) can be interlocked
(Tables 6.13 and 6.14).

Table 6.13. Mechanical Interlocks (Cable/Rod)

Carriage Position Switch (TOC)

Available as an option for mounting within the base of the
cassette/substructure, the carriage position switch provides
six single-pole changeover contacts for local or remote
electrical indication of the circuit breaker status:
CONNECTED, TEST and DISCONNECTED. The DISCONNECTED
position is indicated only when minimum isolating distances
between contacts on both the main and auxiliary circuits
have been achieved. This option is in addition to the
mechanical indicators, which are fitted as standard. When
installed, the carriage switch is IP2X protected and includes
wiring to a terminal block located on the left side of the
cassette (Tables 6.11 and 6.12).

Table 6.11. Carriage Position Switches

Table 6.12. Carriage Position Switch Ratings (Common
NO/NC Contact Configuration)

 Contact factory for availability.

Cables

Standard cable lengths are shown in Table 6.14. (Cables
ordered separately. Please contact our technical customer
service department if longer length is required.)

Table 6.14. Cables for Mechanical Interlocks

30 ©2012 General Electric All Rights Reserved

 Contact factory for availability.

DEH-41304C EntelliGuard® G Circuit Breaker

Typical Circuit

Interlock Configuration

Possible Combinations

Type A

1 from 2 way interlock
2 cable configuration
Interlocking between two circuit breakers

One normal power supply
One generator (emergency) supply

B1

B2 O O 1 O O 1

B1 can close only if B2 is open.
B2 can close only if B1 is open.

Type B

1 from 3 way interlock
6 cable configuration
Interlocking among three circuit breakers

Three power supplies (generator or transformers)
feeding the same busbar but parallel operation is
prevented.

Available on request.

B1

B2

B3 O O O 1 O O O 1 O O O 1

Only 1 of 3 breakers can be closed.

Type C

1 from 3 way interlock
6 cable configuration
Interlocking among three circuit breakers

Two bus sections can be powered by single
transformer (bus coupler closed) or both
transformers (bus coupler open).

Available on request.

B1

B2

B3 O O O 1 O O O O 1 O 1 O 1 1 O O 1 1 v O

1

 Any two from three breakers can be closed.
 Any one from three breakers can be closed.
 Two breakers must be closed to prevent the

third breaker from closing.

Type D

1 from 3 way interlock
6 cable configuration
Interlocking between three circuit breakers

Two normal power supplies not set in parallel.
One power supply may assist the priority circuit.

Available on request.

B1

B2

B3 O O O 1 O O O O 1 1 O 1 O 1

O

 B1 and/or B3 can be closed only if B2 is open.
 B2 can only be closed if B1 and B2 are both

open.

Switch Configuration

Cat. No.

One single pole, double throw switch
(1-Form C contact)

GBAT1R

Ratings

AC

120 Vac

6 A

250 Vac

6 A

DC

125 Vac

0.5 A

250 Vac

0.25 A

13 March 14 Section 6 – Accessories Description

Table 6.15. Interlock Configurations

 Contact factory for availability

Bell Alarm with Lockout

The bell alarm provides remote indication that the circuit
breaker has opened because of an electrical fault. The
Lockout feature is integral to the trip unit. When a Bell
Alarm is supplied with the breaker, the trip unit dial is set
and locked to the manual position. In order to re-close
the breaker, the Lockout button must be pushed in/reset
on the trip unit 1-Form C contact (Tables 6.16 and 6.17).

©2012 General Electric All Rights Reserved 31

Table 6.16. Bell Alarm Switches

Table 6.17. Bell Alarm Ratings (Common NO/NC
Contact Configuration)

EntelliGuard® G Circuit Breaker DEH-41304C

Ratings

Cat. No.

AC

120 Vac

6 A

GSCC1R

250 Vac

6 A

DC

125 Vac

0.5 A

250 Vac

0.25 A

Top Disconnect

Block B

Block A

Side

Disconnect

Block A

circuit breaker/cradle

viewed from the front

Breaker

Type

Mounting

Number of

Poles

Cat. No.

Fixed

top

39 pole set

GSDFTR1

side

top

78 pole set

GSDFTR2

78 pole set

GSDFSR

Drawout

side

78 pole set

GSDWTR

39 pole set

GSDWSR

Envelope

Current Rating

Cat. No.

1

400 A

G04HNRCE

600/630 A

G07HNRCE

800 A

G08HNRCE

1000 A

G10HNRCE

1200/1250 A

G13HNRCE

1600 A

G16HNRCE

2000 A

G20HNRCE

2

400 A

G04MNRCE

600/630 A

G07MNRCE

800 A

G08MNRCE

1000

G10MNRCE

1200/1250 A

G13MNRCE

1600 A

G16MNRCE

2000 A

G20MNRCE

2500 A

G25MNRCE

3000/3200 A

G32HNRCE

4000 A

G40HNRCE

3

3000/3200 A (1600 A x 2)

G32GNRCE

4000 A (2000 A x 2)

G40MNRCE

5000 A (2000 A x 2)

G50MNRCE

6000/6400 A (3200 A x 2)

G04MNRCE

Section 6 – Accessories Description 13 March 14

Charging Spring Status Indicator

Factory-installed on the motor, this auxiliary switch
indicates that the circuit breaker is charged and is
standard with the spring-charging motor (Table 6.18).

Table 6.18. Spring Charged Contact (1 NO)

Secondary Disconnects (Factory-installed/Field
Installable)

Inputs and outputs to the circuit breaker are wired
through secondary disconnects located on either the top
or the side (Envelope 1 only) of the breaker. The plug-style
secondary disconnects engage mating disconnects in the
breaker cubicle when the breaker is in the TEST or
CONNECT position. Up to 78 points are available so that
all breaker accessories can be wired to dedicated
disconnect points. See Table 6.19 for block location and
Table 6.20 for secondary disconnect parts.

Table. 6.19. Block Location

Neutral Rogowski CT’s

The Neutral Rogoswki CT’s are used to measure the

Neutral Current and is required when Internal Ground
Fault is selected on the trip unit. There are two types
available:

1. Encased with Terminal Screws: The Rogowski coil

is encased in a plastic mold with two terminal
screws. No additional mounting hardware is
required as the encasing is molded to the
mounting dimensions. Table 6.21

2. Loose Rogowski Coil with separate mounting

hardware: The coil and mounting hardware are
separate. The coil comes with the two wire leads
for connection to a terminal block. Table 6.21a

Table 6.21. Neutral Rogowski CTs

(Encased with Terminal Screws)

Table. 6.20. Secondary Disconnect Parts

 Set contains both the male and female sides of the secondary

disconnect.

 Drawout kits include the metal bracket for connections to the

cassette.

 Breakers ordered with side mounted disconnects come standard

with 78 pole secondary disconnect.

Ground Fault

The EntelliGuard TU Trip Unit provides a non-core CT
input for zero sequence or residual summation current.
The expected ratio is 1A = 100%.

32 ©2012 General Electric All Rights Reserved

DEH-41304C EntelliGuard® G Circuit Breaker

Envelope

Current Rating

Cat. No.

1

400 A

G04HNRC

600/630 A

G07HNRC

800 A

G08HNRC

1000 A

G10HNRC

1200/1250 A

G13HNRC

1600 A

G16HNRC

2000 A

G20HNRC

2

400 A

G04MNRC

600/630 A

G07MNRC

800 A

G08MNRC

1000

G10MNRC

1200/1250 A

G13MNRC

1600 A

G16MNRC

2000 A

G20MNRC

2500 A

G25MNRC

3000/3200 A

G32HNRC

4000 A

G40HNRC

3

3000/3200 A (1600 A x 2)

G32GNRC

4000 A (2000 A x 2)

G40MNRC

5000 A (2000 A x 2)

G50MNRC

6000/6400 A (3200 A x 2)

G04MNRC

Ratings

Cat. No.

AC

120 Vac

6 A

GRTC2R

250 Vac

6 A

GRTC2R

DC

125 Vac

0.5 A

GRTC1R

250 Vac

0.25 A

GRTC3R

Description

Cat. No.

IP54 Door Panel - Withdrawable Type

GF54D

IP54 Door Panel - Fixed Pattern

GW54D

Mechanical Operations Counter

GMCNR

ACB Lifting Truck

ACBLIFT

Description

Catalog

Number

Env1 800 - 2000A, Type N&H, Flat Front UL489
Fixed 3 Pole Breaker Bus Bar Terminations
(Top/Bottom)

GBB1TBF3

Env1 800 - 2000A, Type N&H, Flat Front UL489
Fixed 4 Pole Breaker Bus Bar Terminations
(Top/Bottom)

GBB1TBF4

Env2 800A - 3000A Flat Front UL489 Fixed 3
Pole Breaker Bus Bar Terminations
(Top/Bottom)

GBB2TBF3

Env2 800A - 3000A Flat Front UL489 Fixed 4
Pole Breaker Bus Bar Terminations
(Top/Bottom)

GBB2TBF4
Env3 4000-6000A Flat Front UL Fixed 3 Pole
Breaker Bus Bar Terminations (Top/Bottom)

GBB3TBF3

Env3 4000-6000A Flat Front UL Fixed 4 Pole
Breaker Bus Bar Terminations (Top/Bottom)

GBB3TBF4

13 March 14 Section 6 – Accessories Description

Table 6.21a. Neutral Rogowski CTs

(Loose Rogowski Coil and mounting hardware)

Ready to Close Contact (Table 6.22)

This contact indicates that the following conditions are
met and the circuit breaker can be closed:

 The circuit breaker is open.
 The closing springs are charged.
 The circuit breaker in not locked/interlocked in open

position.

 There is no standing closing order.
 There is no standing opening order.

Table 6.22. Ready to Close Contacts (1 NO)

Table 6.23. Miscellaneous Accessories

 Contact factory for availability.

Cassette/Substructure

The drawout mechanism allows the breaker to be racked
in four distinct positions:

 CONNECTED
 TEST
 DISCONNECTED
 WITHDRAWN

Position Indicators

Position indicators provide a positive mechanical
indication of CONNECTED, TEST and DISCONNECTED
positions of the breaker.

Rejection Device

A factory-installed rejection feature prevents mis­matching breakers and cassettes/substructures. This
prevents:

 Inserting a breaker with a lower rating into a higher

rated cassette/substructure.

 Inserting a higher rated breaker into a lower rated

cassette/substructure.

Front Flat Terminations
The EntelliGuard G Fixed mounted breaker comes

standard with Back Connected Terminations. Optional
Front Flat terminations are available for front access
mounting (Table 6.24).

Table 6.24. Optional Front Flat Terminations

Sealed Door Panel Escutcheon

An optional complete IP54 front door pane is available

when a higher degree of protection is needed.

Mechanical Operations Counter

Used with either manual or motor charged circuit
breakers, the counter provides an accurate record of the
cumulative number of complete breaker closing
operations (Table 6.23).

©2012 General Electric All Rights Reserved 33

EntelliGuard® G Circuit Breaker DEH-41304C

DANGER

ELECTROCUTION

Ensure the circuit breaker has been tripped, indicating
OFF, and the main springs are fully discharged before
installing accessories.

Failure to comply with these instructions will result
in death or serious injury.

WARNING

IMPROPER INSTALLATION, OPERATION AND
MAINTENANCE

Ensure only qualified personnel install, operate, service
and maintain all electrical equipment.

Failure to comply with these instructions could
result in death or serious injury.

WARNING

PERSONAL INJURY

 Avoid risk of injury from moving parts while

handling the breaker.

 If advisable, use a cable/busbar lockable

grounding device (optional accessory) to provide
additional safety during system maintenance.

Failure to comply with these instructions could
result in death or serious injury.

CAUTION

PRODUCT DAMAGE

 Ensure circuit breaker and its accessories are

always used within their designated ratings.

 Use the specially designed circuit breaker handling

truck (optional accessory) when removing the
circuit breaker from its cassette.

Failure to comply with these instructions may result

in product damage.

Section 7 – Accessories Installation 13 March 14

SECTION 7 – ACCESSORIES INSTALLATION

2. Pull the charging handle while easing the cover

upwards (Fig. 7.2).

Figure 7.2. Charging Handle Position for Cover Removal

MOTOR OPERATOR - SPRING CHARGING UNIT
INSTALLATION

1. Slide the coupling bushing on to the camshaft.

2. Place the gearbox bearing on to the protruding motor

drive shaft, pushing it home until flush with the
mechanism sideplate. If it does not move easily to the
flush position, pull the charging handle gently down to
ease movement.

3. Mount the device using three M5 bolts through the

holes provided in the gearbox endplate, torque to
7 N m.

4. Manually charge the closing springs and carefully locate

the plastic switch actuator over the protruding drive
shaft (Fig. 7.3), ensuring the switch operating arm is

correctly positioned (switch arm should be in the ‘cut
out’ portion of the motor switch actuator.

Figure 7.3. Motor Switch Actuator

CIRCUIT BREAKER FRONT COVER REMOVAL

Required for most accessory installation.

1. Remove the six mounting screws (Fig. 7.1).

Figure 7.1. Front Cover

34 ©2012 General Electric All Rights Reserved

DEH-41304C EntelliGuard® G Circuit Breaker

NOTICE

The mounting positions of the four devices can be
arranged in the locations as specified in Figure 7.4.

Combi­nation

Coil Position on Fascia

1

Network

(IEC)

Interlock

(IEC)

closing coil

under

voltage

2

shunt

shunt

closing coil

under

voltage

3

shunt

UV

closing coil

under

voltage

4

network

under

voltage

closing coil

shunt

DANGER

ELECTROCUTION

Ensure the fixed contacts on the incoming side are isolated
prior to installing the Shutter Prop Open Feature.

Failure to comply with these instructions will result in
death or serious injury.

13 March 14 Section 7 – Accessories Installation

5. Use an M8 nylock nut to mount the motor switch

actuator onto the shaft end, torque to 14.5 N m.

6. Connect the motor connector on to the motor harness.

7. Connect the remaining ground wire from the filter to

the grounding point on the rear of the motor body.

Reverse the above procedure to remove the motorized
spring charging unit

SHUNT TRIP, CLOSING COIL AND UNDER VOLTAGE
RELEASE DEVICE INSTALLATION

Figure 7.4. Device Location

Closing Coil Installation (Fig. 7.5)

1. Tilt the device forward and engage the front hooks into

the top support plate.

2. Tilt the device backwards until the rear hooks engage

in the slots

3. Press down into position.

Figure 7.5. Closing Coil Installation

Connect the wire plugs (Fig. 7.6) according to the wiring
schematic in Section 3.

Figure 7.6. Wiring

Closing Coil Removal

1. Disconnect the device and tilt it forward until the rear

hooks disengage.

2. Lift to release the front hooks.

NETWORK INTERLOCK INSTALLATION

When the network interlock is used with the EntelliGuard G,
it will use the C and D positions of the coils as shown in Fig.

7.4. The mounting procedure is same as the coils.

Trip Alarm/Bell Alarm Switch Installation

1. Remove the 40 pin harness (if installed) from the trip unit.

2. Remove the trip unit from the PMU base.

3. Assemble the trip alarm assembly as shown using four

screws.

4. Reassemble the trip unit back on to the PMU base

5. Install the connector from the trip alarm in the specified

location of the SD.

6. Reassemble the 40 pin harness.

Ready to Close Switch Installation

1. Slide the RTC switch assembly on to the mechanism side

sheet.

2. Assemble the screw and washer.

3. Assemble the snap-on connector to make the electrical

connection.

4. Using the cable tie, tie the wires to the PMU base.

SHUTTER PROP OPEN FEATURE

This feature allows the main fixed contacts to be inspected.

©2012 General Electric All Rights Reserved 35

EntelliGuard® G Circuit Breaker DEH-41304C

A Shutter Operating Lever

Figure 7.11. Clusters

Figure 7.12. Cluster Pliers

Cluster tool

Cluster tool

Section 7 – Accessories Installation 13 March 14

1. Remove the circuit breaker from its cassette.

2. Rotate the shutter operating lever to open the shutter

(Fig. 7.7).

3. Release the shutter operating lever to close the

shutters.

Figure 7.7. Shutter Operating Lever Location

CARRIAGE POSITION SWITCH INSTALLATION

Two configurations are available:

 One device for each position (Fig. 7.8).

Figure 7.8. One Switch Configuration (GCPS1R)

 Two devices for each position (Fig. 7.9).

Figure 7.9. Two Switch Configuration (GCPS2R)

 Each switch has a 1.5 m long wire for each switch

terminal. Each wire is identified with a ferrule.

 The device will indicate DISCONNECTED even when the

circuit breaker is fully withdrawn or removed.

 Mounted on the left-hand side of the cassette for all

frames.

 Mounted on right hand side when used with the

optional side mounted secondary disconnect for frame
1 ANSI/UL circuit breaker. No fasteners are required. To
insert, feed the wires through the large opening on the
side of the cassette. Seat the carriage position switch in
the front side of the hole first. Then use this as a pivot
and ensure that all four tabs lock in place (Fig. 7.10).

Figure 7.10. Carriage Position Switch Location

BUSBAR/CABLE GROUNDING (OPTIONAL)

This feature is used for grounding the circuit breaker
terminals on the busbar or the cable side. The pack
contains:

 Isolating contact (cluster) pliers for removal of the main

isolating contacts.

 Grounding bar with spring-pressured ground contact.

The bar is reversible to fit top or bottom terminal sets.

 Necessary mounting M10 bolts and washers.
 Anti-trip plate.

CLUSTERS

Clusters are the main isolating contacts which are installed
on the rear terminals on the moving portion of the
withdrawable unit. Cluster contacts may be easily and
quickly removed and replaced using cluster pliers (Figs. 7.11
and 7.12).

36 ©2012 General Electric All Rights Reserved

Clusters are mounted horizontally and vertically through
cluster pads for different frame sizes. The slot is provided on
the terminals for locking the clusters. For higher current and
short circuit ratings the clusters are assembled in parallel
(Fig. 7.13).

DEH-41304C EntelliGuard® G Circuit Breaker
13 March 14 Section 7 – Accessories Installation

Figure 7.13. Cluster Views

Upper Cluster Contact Grounding

1. Using the cluster pliers, remove the upper cluster

contacts the rear of the circuit breaker.

2. Position the grounding bar on the exposed top of the

top terminals, ensuring the spring-loaded grounding
contact is facing left when viewed from the rear.

3. Install bolts and washers using the threads in the

grounding bar, one bolt per pole. Torque to 30 N m.

4. The spring loaded grounding contact will engage with

the top fixed grounded contact block in the cassette
when the breaker is racked to the CONNECTED position
(Fig 7.14).

Figure 7.14 Cluster Contact Grounding Top Location

Lower Cluster Contact Set Grounding (Figs. 7.15 and 7.16)

1. Using the cluster pliers, remove the lower cluster

contacts at the rear of the circuit breaker.

2. Position the grounding bar on the exposed top of the

bottom terminals, ensuring the spring-loaded grounding
contact is facing left when viewed from the rear

3. Install bolts and washers using the threads in the

grounding bar, one bolt per pole. Torque to 30 N m.

4. The spring loaded grounding contact will engage with

the bottom fixed grounded contact block in cassette
when the breaker is racked to the CONNECTED position.

Figure 7.15. Cluster Contact Grounding Top Location

Figure 7.16. Fixed Grounding Contact in Cassette

MECHANICAL TRIP ALARM INSTALLATION

1. Remove the front cover.

2. Remove the trip unit.

3. Install the mechanical trip alarm as shown in Fig. 7.17.

Figure 7.17. Mechanical Trip Alarm

©2012 General Electric All Rights Reserved 37

EntelliGuard® G Circuit Breaker DEH-41304C

A

B

C

A Mechanical operations counter
B Operating arm
C Spring charging link

A Pin block assembly

Section 7 – Accessories Installation 13 March 14

4. Connect the wires via the plug connectors to the

respective locations of the secondary isolating
contacts A33, A34 and A35 (Fig. 7.18).

Figure 7.18. Plug Connector Location

5. Replace the front cover.

6. Connect the wires via the plug connectors to the

respective locations of the secondary isolating
contacts A33, A34 and A35.

7. Replace the front cover.

MECHANICAL OPERATIONS COUNTER INSTALLATION
(OPTIONAL)

This device is mounted to the inside of the front cover. It
cannot be reset.

1. Remove the front cover.

2. Position the mechanical operations counter (Fig. 7.19)

over the two holes provided inside the cover, ensuring
the indicator face is aligned to show through the
window in the cover.

Figure 7.19. Mechanical Operations Counter Location

REJECTION FEATURE

This factory-installed, pin and gate device prevents the
insertion of a circuit breaker into a cassette if the nominal
rating of the breaker is incompatible with that of the
cassette and its ancillary equipment. Recommended
configurations are provided with the rejection feature for the
entire EntelliGuard range (Fig. 7.20).

Figure 7.20. Rejection Feature

Fig. 7.21 shows the corresponding restrainer assembly
mounted on the cassette with one M4 nut and lock washer.
There are two of these assemblies, one on each side of the
cassette.

Figure 7.21 Corresponding Restrainer

3. Ensure the operating arm on the counter rides over the

spring charging link of the circuit breaker mechanism.

4. Mount in position using the screws provided.

38 ©2012 General Electric All Rights Reserved

DEH-41304C EntelliGuard® G Circuit Breaker

WARNING

IMPROPER INSTALLATION, OPERATION, SERVICE AND
MAINTENANCE

Ensure only qualified personnel install, operate, service
and maintain all electrical equipment.

Failure to comply with these instructions could result
in death or serious injury.

DANGER

ELECTROCUTION

Ensure the circuit breaker has been tripped, indicating
OFF, and the main springs are fully discharged when
performing circuit breaker maintenance.

Failure to comply with these instructions will result in
death or serious injury.

WARNING

PERSONAL INJURY

 Avoid risk of injury from moving parts while handling

the circuit breaker.

 If advisable, use a cable/busbar lockable grounding

device (optional accessory) to provide additional
safety during system maintenance.

Failure to comply with these instructions could result
in death or serious injury.

Contact

gap

Contact

gap

13 March 14 Section 8 – Maintenance, Testing and Troubleshooting

SECTION 8 – MAINTENANCE, TESTING AND
TROUBLESHOOTING

MAINTENANCE

The back edge of each contact tip should line up with the
outer edge of the marked area on the wear indicator. As the
contacts erode, the gap between the back of the contact tip
and the rear housing becomes smaller. If the back edge of
the contact tip crosses into the marked area, the tip is
heavily eroded, and it needs to be replaced (Fig. 8.1).

Figure 8.1. Contact Gap

1. Remove the arc chamber assemblies as shown in Fig.

8.2.

Figure 8.2. Arc Chamber Assembly Removal

Inspection Schedule

 Normal working conditions:

- Annually, or

- Following interruption of a short circuit, or

- After repeated high value overload faults.

 Dusty/polluted environments:

- Every six months, or

- Following interruption of a short circuit, or

- After repeated high value overload faults.

Cleaning Procedure

1. Inspect external surfaces for dust/dirt.

2. Clean with compressed air and dry cloth.

Contact Wear Indicator Inspection (Optional)
The contact wear indicator indicates the condition of the
contact tip when the circuit breaker is viewed in the closed
condition from the top side. It indicates the relative position
of the back edge of each contact tip with the area marked
on the wear indicator.

©2012 General Electric All Rights Reserved 39

2. Insert the wear indicator in each pole as shown in Fig 8.3.

Figure 8.3. Wear Indicator Insertion

3. View the back end of finger with the arcing contact edge

with respect to the marked area on the wear Indicator.
The marked area indicates the allowable erosion for
main tips (Fig. 8.4).

Figure 8.4. Wear Indicator in Place

EntelliGuard® G Circuit Breaker DEH-41304C

CAUTION

PRODUCT DAMAGE

Do not lubricate Auxiliary Switch, Signaling Switches,
Coils, Motor and secondary disconnects.

Failure to comply with these instructions may result in
product damage.

Section 8 – Maintenance, Testing and Troubleshooting 13 March 14

1. Inspect the arc splitter plates and sides of the moldings

for signs of wear or damage. Replace as necessary.

2. With the circuit breaker in the ON position, check the

size of the gaps between the fixed and moving arcing
contacts.

 If the gap is greater than 2.5 mm:

- No evidence of contact damage: loosen the

fixed contact screw and adjust the gap to

2.5 mm. Retighten the screw (12 N m torque).

- Evidence of excessive contact wear or damage:

Replace the fixed arcing contacts and set the
gap set to 2.5 mm.

 Even if gaps are within operating tolerance (1 mm

to 2.5 mm) always check contact screws for
tightness to 12 N m torque.

3. Assemble the arc chamber. Torque to 2 N m.

Circuit Breaker Main Mechanism Inspection

 Check the circuit breaker ON and OFF action both

manually and by remote means, if appropriate.

 Check tripping action by means of the under voltage

release (if installed).

 Check all indicators for correct function.
 Check number of operations (if operations counter is

installed) to the circuit breaker’s specification.

Cassette Inspection

 Ensure the base of the cassette is clear of debris.
 Prop open the top and bottom shutters and inspect the

cassette’s installed contacts for excessive wear or

damage.

 Check the carriage switch operation (if installed) while

racking the circuit breaker into and out of the
CONNECTED position.

Isolating Contacts (Drawout Type) Inspection

1. Remove the circuit breaker from the cassette housing

and place it on a suitable working surface.

2. Inspect the rear cluster contacts for signs of

overheating and wear.

3. Remove the cluster contacts using the special cluster

pliers.

4. Clean the isolating contacts and terminals with a soft,

clean cloth to remove any old grease or dirt.

5. Apply a thin film of white paraffin grease (grade 8802).

Power Terminals and Busbar Inspection

1. Inspect insulating parts for cracks. If found, replace

affected component.

2. Clean dust/dirt with dry cloth.

3. Tighten screws/nuts to proper torque.

4. Inspect terminal joints for signs of overheating and

oxidation. If found, clean affected component.

Lubrication

Ensure all metal-to-metal friction surfaces are kept
lubricated:

1. Remove old lubrication and dirt.

2. Apply Molecote 4700.

3. Wipe off excess lubrication.

TRIP UNIT TESTING

1. Test the circuit breaker operation against selected

protection settings (see Section 2) using a trip unit test
box (optional accessory).

2. Continuity check the mechanical trip alarm (if installed),

while test box tripping the trip unit.

3. Continuity check REF inter-trip (if installed).

40 ©2012 General Electric All Rights Reserved

DEH-41304C EntelliGuard® G Circuit Breaker

Problem

Possible Cause

Solution

Breaker won’t close.

 Breaker is between CONNECTED, TEST

and DISCONNECTED positions.

 Trip unit has not been reset.
 Under voltage release coil is installed

but not energized.

 Interlocks installed.
 Racking handle inserted.

 Rack circuit breaker to CONNECTED, TEST or

DISCONNECTED remove racking handle and close
circuit breaker.

 Push orange button on trip unit and close circuit

breaker.

 Energize under voltage release coil and close

circuit breaker.

 Remove interlocks.
 Remove handle and close circuit breaker.
 Check operational diagram and trip the relevant

circuit breaker.

Breaker closes then opens
instantaneously.

 Breaker information module connector

is not inserted.

 Trip unit settings are incorrect.
 Remote Rogowski coil is incorrectly

installed.

 Insert breaker information module connector to

breaker information module.

 Ensure the protection limits setting matches

system loads. Ensure inputs are set to normally
closed trip without a signal applied.

 Re-position coil.

Motor won’t charge.

Ensure motor actuator is installed.

Install motor actuator.

DC closing coil or under voltage
release won’t operate.

Ensure the correct polarity of the
connection to the secondary isolating
contacts.

Refer to wiring schematic (see Section 3).

Circuit breaker won’t rack into

cassette.

 Ensure breaker is pushed fully from the

maintenance position to
DISCONNECTED.

 Racking drive not in DISCONNECTED

position.

 Push breaker into DISCONNECTED position.
 Ensure racking drive is in DISCONNECTED

position.

Ground fault does not operate
below 40% setting.

Ensure trip unit is installed and energized.

Install trip unit and energize. See Section 3 for wiring
schematic.

Cannot insert racking handle.

 Shutter padlocks are installed.
 Key locks are installed.

Remove padlocks and/or key locks.

Circuit breaker will not go into
the DISCONNECTED position.

 Rejection feature is incorrectly set.
 Circuit breaker is incorrect for given

cassette.

 Reset rejection feature.
 Ensure circuit breaker and cassette go together.

Trip unit status not working.

 Ensure trip unit, if installed, is

energized.

 Insufficient primary current to power

the unit.

 Install trip unit, if not installed.
 Trip unit will power with 40% I

n

single phase, and

20% In 3 phase current.

Trip unit not displaying existing
fault after tripping the circuit
breaker.

Trip unit set to auto reset (fault still stored).

 Check trip history for fault type.
 Set trip unit reset button to manual.

MODBUS communications not
responding

 Communication incorrectly configured.
 Trip unit baud rate not compatible with

host.

 Request configuration document.
 Set trip unit baud rate to match host.

13 March 14 Section 8 – Maintenance, Testing and Troubleshooting

TROUBLESHOOTING

Table 8.1 reviews common problems, their possible cause(s) and solution(s). If problems persist please contact our After
Sales Service Department at 1-888-GERESOLVE. (1-888-437-3765).

Table 8.1. Troubleshooting

©2012 General Electric All Rights Reserved 41

EntelliGuard® G Circuit Breaker DEH-41304C

Publications

Pub #

EntelliGuard® G Application Guide

DET-653A

Time Current Curves: EntelliGuard® TU Trip Unit for EntelliGuard® G; Ground Fault

DES-093

Time Current Curves: EntelliGuard® TU Trip Unit for EntelliGuard® G; Instantaneous,
Override (HSIOC), Reduced Energy Let-Through Instantaneous (RELT)

DES-094

Time Current Curves: EntelliGuard® TU Trip Unit for EntelliGuard® G; Long-Time Circuit
Breaker Characteristics

DES-090

Time Current Curves: EntelliGuard® TU Trip Unit for EntelliGuard® G; Long-Time Fuse­Like Characteristics

DES-091

Time Current Curves: EntelliGuard® TU Trip Unit for EntelliGuard® G; Short-Time Pickup
and Delay Bands

DES-092
Secondary Disconnects - Drawout

DEH-41401

CT Mounting for External Ground Fault

DEH-41402

Position Switch Kit

DEH-41403

Back Connected Terminations

DEH-41404

Front Connected Terminations

DEH-41405

Time Delay Module

DEH-41406

Key Interlock Kit - Breaker Mounted

DEH-41407

Door Interlock Kit

DEH-41408

Bell Alarm w/ Lockout

DEH-41409

Undervoltage Device

DEH-41410

Shunt Trip

DEH-41411

Remote Close Accessory Close Coil

DEH-41412

Motor Operator

DEH-41413

Pushbutton Padlock Device

DEH-41414

Aux Switch

DEH-41415

Operations Counter

DEH-41416

Secondary Disconnects - Fixed

DEH-41417

Command Close Coil

DEH-41418

Ready To Close (RTC)

DEH-41419

Coil Signaling Contacts

DEH-41420

Mechanical Interlocks (fixed and drawout)

Key Interlock Cassette Mounted

IP54 Door

Finger Assembly using Cat #GUNI

Rejection Scheme

Arc Chute Assembly

DEH-41389

Anti-Bounce Assembly

DEH-41667

Gas Channel Assembly

DEH-41668

Cluster Pad Assembly

DEH-41447

Section 8 – Maintenance, Testing and Troubleshooting 13 March 14

EntelliGuard® G Publications

To download publications like those shown below, visit www.geelectrical.com.

42 ©2012 General Electric All Rights Reserved

DEH-41304C EntelliGuard® G Circuit Breaker
13 March 14 Section 8 – Maintenance, Testing and Troubleshooting

NOTES:

©2012 General Electric All Rights Reserved 43