Cutler Hammer, Div of Eaton Corp Series C Moulded Case Circuit Breakers Catalog Page

Series C Moulded Case Circuit Breakers

70-600 Amperes L-Frame

L-1

Typical L-Frame Circuit Breaker

Product Description

●

All L-frame circuit breakers are HACR
rated.

●

L-frame circuit breakers are available as
individual components (Frame, Trip
Unit, Terminals), or factory assembled
complete breakers. OPTIM circuit
breakers are available as factory
assembled only.

●

L-frame circuit breakers are
suitable for reverse feed use.

Technical Data and Specifications

CSA C22.2 No. 5 and UL489 Interrupting Capacity Ratings

Interrupting Capacity (RMS Symmetrical Amperes) (kA)

Circuit
Breaker Type

LD
CLD

➃

HLD
CHLD

LDC

➄

CLDC

IEC 947-2 Interrupting Capacity Ratings

Circuit
Breaker Type

LD 2, 3, 4 I

CLD

➃

HLD 2, 3, 4 I

CHLD

LDC 2, 3, 4 I

CLDC

➃

➄

➃

➃

➃

Number of
Poles

2, 3, 4
2, 3, 4
2, 3, 4
2, 3, 4

2, 3, 4
2, 3, 4

Number of
Poles

2, 3, 4 I

2, 3, 4 I

2, 3, 4 I

Volts Ac (50/60 Hz) Volts Dc

240 277 480 600 125 250

65
65
100
100

200
200

cu

I

cs

cu

I

cs

cu

I

cs

cu

I

cs

cu

I

cs

cu

I

cs

–
–
–
–

–
–

35
35
65
65

100
100

➀

Interrupting Capacity (Symmetrical Amperes) (kA)

Volts Ac (50/60 Hz) Volts Dc

240 415 690 250

85
85

85
85

100
100

100
100

200
100

200
100

25
25
35
35

50
50

45
45

45
45

70
70

70
70

100
75

100
75

➀

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49

Section
Page

➁➂

Number

–
–
–
–

–
–

22
–
25
–

30
–

L-4,5,7
L-5,9
L-4,5,7
L-5,9

L-4,5,8
L-5,10

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Section

➁➂

20
10

20
10

25
13

25
13

35
18

35
18

20
10

–
–

20
10

–
–

20
10

–
–

Page
Number

L-4,5,7

L-5,9

L-4,5,7

L-5,9

L-4,5,8

L-5,10

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

Utilization category A circuit breakers.



L/R = 8 milliseconds minimum.



2-pole circuit breaker or two poles of 3-pole circuit breaker. Incorporating Thermal-Magnetic trip unit only.



100% rated breakers.



Current limiting.

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Series C and Special Application Moulded Case Circuit Breakers

PG01200001K—October 2011

41

L-2

Series C Moulded Case Circuit Breakers

70-600 Amperes L-Frame

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L-Frame Digitrip Specifications

Trip Unit Type Digitrip RMS 310 Digitrip OPTIM 550 Digitrip OPTIM 1050

RMS Sensing Yes Yes Yes

Breaker Type

Frame L L L

Ampere Range 300-600A 200-600A 70-600A

Interrupting Rating @ 600V 25, 35, 50 (kA) 25, 35, 50 (kA) 25, 35, 50 (kA)

Protection

Ordering Options LS, LSG LSI, LSIG LSI, LSI(A), LSIG LSI(A), LSIG

Fixed Rated Plug (In) Yes Yes Yes Yes

Overtemperature Trip Yes Yes Yes Yes

Long Delay Protection (L)

Adjustable Rating Plug (I

Long Delay Pickup 0.5-1.0 (In)

Long Delay Time I

Long Delay Time I4t No No 1-5 Seconds 1-5 Seconds

Long Delay Thermal Memory Yes Yes Yes Yes

High Load Alarm No No 0.5-1.0 x I

Short Delay Protection (S)

Short Delay Pickup 200-800% x (In) 200-800% x (In) 150-800% x (Ir) 150-800% x (Ir)

Short Delay Time I2t 100 ms No 100-500 ms 100-500 ms

Short Delay Time Flat No Inst-300 ms 100-500 ms 100-500 ms

Short Delay Time Zone Selective Interlocking No No Yes

Instantaneous Protection (I)

Instantaneous Pickup No 200-800% x (In) 200-800% x (In) 200-800% x (In)

Discriminator No No Yes Yes

Instantaneous Override Yes Yes Yes Yes

Ground Fault Protection (G)

Ground Fault Alarm No No 20-100% x (Is) 20-100% x (Is)

Ground Fault Pickup 1-5 x 1g (120A) 1-5 x 1g (120A) 20-100% x (Is) 20-100% x (Is)

Ground Fault Delay I2t No No 100-500 ms 100-500 ms

Ground Fault Delay Flat Inst-500 ms Inst-500 ms 100-500 ms 100-500 ms

Ground Fault Zone Selective Interlocking No No Yes

Ground Fault Thermal Memory Yes Yes Yes Yes

System Diagnostics

Status LEDs Yes Yes Yes Yes

Cause of Trip LEDs No No Yes Yes

Magnitude of Trip Information No No Yes Yes

Remote Signal Contact – Ground Alarm Yes

Local Auxiliary and Bell Alarm Contact Optional Optional Optional Included

System Monitoring

Digital Display No No Yes

Current No No Yes Yes

Power and Energy No No No Yes

Power Quality-Harmonics No No No Yes

Power Factor No No No Yes

Communications

Eaton PowerNet No No Yes

Testing

Testing Method Test Set OPTIMizer, BIM, Eaton PowerNet



Adjust by rating plug.



By OPTIMizer/BIM.



Require Eaton PowerNet kit.



Require Zone interlock kit.



With separate ground fault alarm unit (GFAU).

) Yes Yes No No

n

➀

2

t 12 Seconds 12 Seconds 2-24 Seconds 2-24 Seconds

➄

Legend:
BIM = Breaker Interface Module
(A) = GF Alarm

0.5-1.0 (In)

Yes

➄

➀

0.4-1.0 x (In) 0.4-1.0 x (In)

r

➃

➃

Yes

➃➄

➁

➂

= Sensor Rating

I

s

= Rating Plug

I

n

Ir = Long Delay Pickup Setting

0.5-1.0 x I

Yes

Yes

Yes

➄

➁

Yes

Yes

r

42 Series C and Special Application Moulded Case Circuit Breakers

PG01200001K—October 2011

Series C Moulded Case Circuit Breakers

70-600 Amperes L-Frame

L-3

Catalogue Numbering System

This information is presented only as an aid to understanding Catalogue numbers. It is not to be used to build Catalogue numbers for
circuit breakers or trip units.

Thermal-Magnetic Trip Unit Catalogue NumberCircuit Breaker/Frame Catalogue Number

LD

3 600 F LT 3 400 T

Circuit

Breaker/

Frame Type



LD



HLD



LDC



CLD



CHLD



CLDC



“VISA option is available. CSA listed only.

Number

of Poles

2: 2 Poles
3: 3 Poles
4: 4 Poles

Circuit
Breaker/Frame
Ampere Rating

300
350
400
450
500
600

F: Frame Only
WK: High Magnetic Moulded

V: 50°C (Thermal-Magnetic

FS: VISA - Frame only.
SKW: VISA - High Magnetic

Suffix

Case Switch without
terminals

Trip Units Only)

Moulded Case Switch
without terminals





Trip Unit Type

LT:Thermal-

Magnetic

Number
of Poles

2: 2 Poles
3: 3 Poles
4: 4 Poles

OPTIM Circuit Breaker/Frame Catalogue Number Digitrip RMS 310 Trip Unit Catalogue Number

Circuit

Breaker/

Frame

Type

LD
HLD
LDC
CLD
CHLD
CLDC

Number
of Poles

3: 3 Poles

LD

3 125 T5 7 W

Circuit

Breaker/

Frame

Ampere

Rating

125
(Available on
Model 1050
only)

250
(Available on
Model 1050
only)

400

600

Trip Model

T5 –
Model 550

T10 –
Model 1050

Trip Type

2 – LSI
(550 only)
6 – LSIG
7 – LSIA

Suffix

W:Without
Terminals

Trip Unit Type

LES:Electronic

LES

Number of

Poles

3: 3 Poles
4: 4 Poles

Trip Unit/

Rating Plug

Ampere

Rating

300
350
400
450
500
600

T: Trip Unit Thermal-Magnetic

TV: 50°C Calibration (Thermal-

3 600 LS P

Trip Unit

Ampere

Rating

600

Suffix

LS
LSI
LSG
LSIG

Suffix

Fixed Thermal Adjustable
Magnetic

Magnetic Trip Units Only)

Suffix

P: 100% Protected

Neutral on 4-Pole
Trip Unit

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Dimensions/Weights

Dimensions, Inches (mm)

Number of Poles Width Height Depth

2, 3 8.25

4 11

Approximate Shipping Weight, Lbs. (kg)

Complete Breaker Frame Only Trip Unit

Breaker
Type

LD, HLD,
LDC

Series C and Special Application Moulded Case Circuit Breakers

Number of Poles

234234234

18
(8.172)20(9.080)25(11.340)14(6.356)15(6.810)20(9.072)3(1.361)4(1.814)5(2.268)

(210)

(279)

10.75
(274)

10.75
(274)

PG01200001K—October 2011

4.062
(103)

4.062
(103)

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L-4

Series C Moulded Case Circuit Breakers

70-600 Amperes L-Frame

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Product Selection

Types LD, HLD, and LDC Thermal-Magnetic Circuit Breakers with Interchangeable Trip Units

Standard Interrupting Capacity
600 Vac Rated
25 kAIC @600 Vac

Factory
Assembled
Circuit Breaker

Maximum
Continuous
Ampere
Rating
@ 40°C

2-Pole

300
350
400
450
500
600

3-Pole

300
350
400
450
500
600

4-Pole

300
350
400
450
500
600

Instruction Leaflet Number 29C105 for Breaker; 29C607 for Thermal Magnetic Trip Unit

Consisting
of Frame,
Trip Unit,
and Terminals

Catalogue Number

➁

LD2300
LD2350
LD2400
LD2450
LD2500
LD2600

LD3300
LD3350
LD3400
LD3450
LD3500
LD3600

➂

LD4300
LD4350
LD4400
LD4450
LD4500
LD4600

Frame

➀

Only

LD2600F HLD2300

LD3600F HLD3300

LD4600F HLD4300

High Interrupting Capacity
600 Vac Rated
35 kAIC @ 600 Vac

Factory
Assembled
Circuit Breaker
Consisting
of Frame,
Trip Unit,
and Terminals

HLD2350
HLD2400
HLD2450
HLD2500
HLD2600

HLD3350
HLD3400
HLD3450
HLD3500
HLD3600

HLD4350
HLD4400
HLD4450
HLD4500
HLD4600

Frame

➀

Only

HLD2600F LDC2300

HLD3600F LDC3300

HLD4600F LDC4300

Ultra High Interrupting
Capacity Current Limiting
600 Vac Rated
50 kAIC @ 600 Vac

Factory
Assembled
Circuit Breaker
Consisting
of Frame,
Trip Unit,
and Terminals

LDC2350
LDC2400
LDC2450
LDC2500
LDC2600

LDC3350
LDC3400
LDC3450
LDC3500
LDC3600

LDC4350
LDC4400
LDC4450
LDC4500
LDC4600

Frame
Only

LDC2600F LT2300T

LDC3600F LT3300T

LDC4600F LT4300T

Thermal Magnetic
Trip Unit Only

For Use With: Standard
or High or Ultra High
Interrupting Frames

Magnetic Trip Range
is 5-10 x Continuous
Ampere Rating

LT2350T
LT2400T
LT2450T
LT2500T
LT2600T

LT3350T
LT3400T
LT3450T
LT3500T
LT3600T

LT4350T
LT4400T
LT4450T
LT4500T
LT4600T

Standard Terminals Only

See Section Page Number
L-11 for
Optional Terminals

➃

TA602LD
TA602LD

➃

TA602LD

➃

TA602LD

➃

TA602LD

➃

2TA603LDK

TA602LD
TA602LD
TA602LD
TA602LD
TA602LD
3TA603LDK

TA602LD
TA602LD
TA602LD
TA602LD
TA602LD
4TA603LDK

➄

➃
➃
➃
➃
➃

➄

➃
➃
➃
➃
➃

➄

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

When a “VISA” frame is required, add suffix “S” to circuit breaker frame catalogue number. LD and HLD only.



2-pole circuit breaker supplied in 3-pole frame.



Neutral is in right pole.



Individually packed.



Terminal kits contain one terminal for each pole and one terminal cover.

44 Series C and Special Application Moulded Case Circuit Breakers

PG01200001K—October 2011