Molded Case Circuit Breakers
Typical K-Frame Circuit Breaker
Series C
Contents
Description Page
Product Overview . . . . . . . . . . . . . . . . . . . . . . . . . . V4-T2-246
Standards and Certifications . . . . . . . . . . . . . . . . . . V4-T2-247
Quick Reference . . . . . . . . . . . . . . . . . . . . . . . . . . . V4-T2-248
G-Frame (15–100 Amperes) . . . . . . . . . . . . . . . . . . V4-T2-251
F-Frame (10–225 Amperes) . . . . . . . . . . . . . . . . . . V4-T2-265
J-Frame (70–250 Amperes). . . . . . . . . . . . . . . . . . . V4-T2-283
K-Frame (70–400 Amperes)
Catalog Number Selection. . . . . . . . . . . . . . . . .
Product Selection. . . . . . . . . . . . . . . . . . . . . . . . V4-T2-294
Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . V4-T2-310
Technical Data and Specifications . . . . . . . . . . . V4-T2-311
Dimensions and Weights. . . . . . . . . . . . . . . . . . V4-T2-314
L-Frame (125–600 Amperes) . . . . . . . . . . . . . . . . . V4-T2-315
M-Frame (300–800 Amperes) . . . . . . . . . . . . . . . . . V4-T2-341
N-Frame (400–1200 Amperes) . . . . . . . . . . . . . . . . V4-T2-352
R-Frame (800–2500 Amperes) . . . . . . . . . . . . . . . . V4-T2-367
Motor Circuit Protectors (MCP) . . . . . . . . . . . . . . . V4-T2-386
Motor Protection Circuit Breakers (MPCB). . . . . . . V4-T2-397
Type ELC Current Limiter Attachment (Size 0–4)
Current Limiting Circuit Breaker Module
Internal Accessories . . . . . . . . . . . . . . . . . . . . . . . . V4-T2-403
External Accessories. . . . . . . . . . . . . . . . . . . . . . . . V4-T2-436
. . . . V4-T2-399
. . . . . . . . . . V4-T2-400
2.4
2
V4-T2-292
K-Frame (70–400 Amperes)
Product Description
l
All Eaton K-Frame circuit
breakers are HACR rated
l
K-Frame circuit breakers are
available as individual
components (frame, trip
unit, terminals), or factory
assembled complete
breakers
l
K-Frame circuit breakers
with non-interchangeable
trip units are suitable for
reverse feed use
Volume 4—Circuit Protection CA08100005E—March 2020 V4-T2-291
Molded Case Circuit Breakers
Number
of Poles
2 = Two-pole
3 = Three-pole
4 = Four-pole
Circuit Breaker/
Frame Ampere
Rating
100
125
150
175
200
225
250
300
350
400
KD 3 400 F
Circuit Breaker/
Frame Type
DK
KD
KDB
HKD
KDC
Suffix
C= Copper terminals
E= 50% protected neutral pole (four-pole electronic trip
unit circuit breaker only)
F= Frame only (400 A only)
K= High-magnetic molded-case switch
V= 50 ° calibration (thermal-magnetic trip units only)
W= Without terminals
X= Load terminals only
Y= Line side terminals only
Blank= Standard load and line side terminals
Number
of Poles
2 = Two-pole
3 = Three-pole
4 = Four-pole
Circuit Breaker/
Frame Ampere
Rating
100
125
150
175
200
225
250
300
350
400
KT 3 400 F
Trip Unit Type
KT = Thermal-magnetic
Suffix
T = Trip unit only
2.4
Catalog Number Selection
This information is presented only as an aid to understanding catalog numbers.
It is not to be used to build catalog numbers for circuit breakers or trip units.
2
K-Frame with Thermal-Magnetic Trip Unit Technology
Series C
Thermal-Magnetic Breakers and Frames
Thermal-Magnetic Trip Unit
1
1
Notes
1
Frames are the same for thermal-magnetic or 310+ electronic trip units, e.g., KD3400F or HKD3400F.
Ampere rating available with electronic trip unit only.
V4-T2-292 Volume 4—Circuit Protection CA08100005E—March 2020
Molded Case Circuit Breakers
Performance at
480 Vac
KDB= 35 kAIC
HKDB= 65 kAIC
CKDB= 35 kAIC
100% rated
CHKDB= 65 kAIC
100% rated
Number
of Poles
3 = Three-pole
Ampere Rating
125
250
400
Trip Unit
T33=310+ Electronic LS
T32=310+ Electronic LSI
T35=310+ Electronic LSG
T36=310+ Electronic LSIG
T38=310+ Electronic ALSI with Maintenance Mode
T39=310+ Electronic ALSIG with Maintenance Mode
Feature
Blank= No feature
B20 = High load alarm
B21 = Ground fault alarm, with trip
B22 = Ground fault alarm, no trip
ZG = Zone selective interlocking
Terminals
W = No terminals
L = Line and load
Frame Designation
F
KDB 3 400 F T36 ZG W
Trip Unit Type
KES
Number
of Poles
3 = Three-pole
4 = Four-pole
Ampere Rating
125
250
400
Trip Unit
LS= 310+ Electronic LS
LSI=310+ Electronic LSI
LSG=310+ Electronic LSG
2
LSIG=310+ Electronic LSIG
2
ALSI=310+ Electronic LSI with Maintenance Mode
ALSIG=310+ Electronic LSIG with Maintenance Mode
2
Feature
Blank= No feature
B20 = High load alarm
B21 = Ground fault alarm, with trip
2
B22 = Ground fault alarm, no trip
2
ZG = Zone selective interlocking
KES 3 400 LSIG ZG
Circuit Breaker/Frame
Ampere Rating
125
250
400
Trip Model
T5= Model 550
T10= Model 1050
KD 3 125 T5 7 W
Trip Type
2 = LSI
6 = LSIG
7 = LSIA
Suffix
W = Without terminals
Circuit Breaker/
Frame Type
KD
HKD
KDC
CKD
CHKD
Number
of Poles
3 = Three-pole
Series C
2.4
K-Frame with 310+ Electronic Trip Unit Technology
310+ Circuit Breakers
310+ Electronic Trip Units
2
3
1
2
K-Frame with OPTIM Trip Unit Technology
OPTIM Circuit Breakers
Notes
1
Cannot combine ‘B2X’ suffixes with ‘B2X’ suffixes.
2
Not available in four-pole configurations.
3
Frames are the same for thermal-magnetic or 310+ electronic trip units, e.g., KD3400F, HKD3400F, etc.
Volume 4—Circuit Protection CA08100005E—March 2020 V4-T2-293
Molded Case Circuit Breakers
2.4
Product Selection
2
Types KD, HKD and KDC Thermal-Magnetic Circuit Breakers with Interchangeable Trip Units
Maximum
Continuous
Ampere Rating
at 40 °C
Tw o - P o l e
100 KD2100 HKD2100 KDC2100 KT2100T TA300K
125 KD2125 HKD2125 KDC2125 KT2125T TA300K
150 KD2150 HKD2150 KDC2150 KT2150T TA300K
175 KD2175 HKD2175 KDC2175 KT2175T TA300K
200 KD2200 HKD2200 KDC2200 KT2200T TA300K
225 KD2225 HKD2225 KDC2225 KT2225T TA300K
250 KD2250 HKD2250 KDC2250 KT2250T TA350K
300 KD2300 HKD2300 KDC2300 KT2300T TA350K
350 KD2350 HKD2350 KDC2350 KT2350T TA350K
400 KD2400 HKD2400 KDC2400 KT2400T 2TA400K
Three-Pole
100 KD3100 HKD3100 KDC3100 KT3100T TA300K
125 KD3125 HKD3125 KDC3125 KT3125T TA300K
150 KD3150 HKD3150 KDC3150 KT3150T TA300K
175 KD3175 HKD3175 KDC3175 KT3175T TA300K
200 KD3200 HKD3200 KDC3200 KT3200T TA300K
225 KD3225 HKD3225 KDC3225 KT3225T TA300K
250 KD3250 HKD3250 KDC3250 KT3250T TA350K
300 KD3300 HKD3300 KDC3300 KT3300T TA350K
350 KD3350 HKD3350 KDC3350 KT3350T TA350K
400 KD3400 HKD3400 KDC3400 KT3400T 3TA400K
Four-Pole
100 KD4100 HKD4100 KDC4100 KT3100T TA300K
125 KD4125 HKD4125 KDC4125 KT3125T TA300K
175 KD4175 HKD4175 KDC4175 KT3175T TA300K
200 KD4200 HKD4200 KDC4200 KT3200T TA300K
225 KD4225 HKD4225 KDC4225 KT3225T TA300K
250 KD4250 HKD4250 KDC4250 KT3250T TA350K
300 KD4300 HKD4300 KDC4300 KT3300T TA350K
350 KD4350 HKD4350 KDC4350 KT3350T TA350K
400 KD4400 HKD4400 KDC4400 KT3400T 4TA400K
Notes
1
Magnetic trip adjustable 5–10 times continuous ampere rating.
2
Individually packed.
3
2TA400K, 3TA400K and 4TA400K terminal kits contain one terminal for each pole and one terminal cover.
Series C
Standard Interrupting
Capacity
600 Vac Rated
35 kAIC at 480 Vac
Factory Assembled
Circuit Consisting
of Frame, Trip Unit
and Terminals
Catalog
Number
1
High Interrupting
Capacity
600 Vac Rated
65 kAIC at 480 Vac
Factory Assembled
Circuit Consisting
of Frame, Trip Unit
and Terminals
1
Catalog
Number
Ultra High Interrupting
Capacity Current Limiting
600 Vac Rated
100 kAIC at 480 Vac
Factory Assembled
Circuit Consisting
of Frame, Trip Unit
and Terminals
1
Catalog
Number
Thermal-Magnetic
Trip Unit Only
For Use with Standard
or High or Ultra High
Interrupting Frames
1
Catalog
Number
Standard Terminals Only
See Page V4-T2-309 for
Optional Terminals
Catalog
Number
2
2
2
2
2
2
2
2
2
3
2
2
2
2
2
2
2
2
2
3
2
2
2
2
2
2
2
2
3
V4-T2-294 Volume 4—Circuit Protection CA08100005E—March 2020
Molded Case Circuit Breakers
23
2.4
Terminal
Information
V4-T2-309
Series C
Types KD, HKD and KDC Thermal-Magnetic Circuit Breakers—Frame Only
Standard Interrupting Capacity
600 Vac Rated
35 kAIC at 480 Vac
Catalog
Number
Tw o - P o l e
KD2400F HKD2400F KDC2400F
Three-Pole
KD3400F HKD3400F KDC3400F
Four-Pole
KD4400F HKD4400F KDC4400F
High Interrupting Capacity
600 Vac Rated
65 kAIC at 480 Vac
Catalog
Number
Types KD, HKD and KDC Electronic Circuit Breakers with Interchangeable 310+ Trip Units
Order as individual components: breaker frame, trip unit and terminals. See 310+ adjustability specifications on Page V4-T2-312.
Types KD, HKD and KDC Electronic Circuit Breakers with Interchangeable 310+ Trip Units—Three-Pole
Circuit Breaker Frame Only Digitrip RMS 310+ Trip Unit Only
Ultra High
Standard
Interrupting
Capacity
Max.
Cont.
Ampere
Rating
at 40 °C
125 KD3400F HKD3400F KDC3400F KES3125LS KES3125LSI KES3125LSG KES3125LSIG LGFCT125 See Page
250 KD3400F HKD3400F KDC3400F KES3250LS KES3250LSI KES3250LSG KES3250LSIG LGFCT250
400 KD3400F HKD3400F KDC3400F KES3400LS KES3400LSI KES3400LSG KES3400LSIG LGFCT400
600 Vac
Rated
35 kAIC at
480 Vac
Catalog Number Catalog Number
High
Interrupting
Capacity
600 Vac
Rated
65 kAIC at
480 Vac
Interrupting
Capacity
Current
Limiting
600 Vac
Rated
100 kAIC
at 480 Vac
Standard Options
LS LSI LSG LSIG
Adjustable
Short Time
Pickup with
2
t Short
I
Delay Ramp
Ultra High Interrupting
Capacity Current Limiting
600 Vac Rated
100 kAIC at 480 Vac
Catalog
Number
1
Independently
Adjustable
Short Time
Pickup and
Delay
Adjustable
Short Time
Pickup with
2
t Short
I
Delay and
Ground Fault
Protection
Independently
Adjustable
Short Time
Pickup and
Delay and
Ground Fault
Protection
Neutral CT for
LSG and LSIG
2
Types KD, HKD and KDC Electronic Circuit Breakers with Interchangeable 310+ Trip Units—Four-Pole
Circuit Breaker Frame Only Digitrip RMS 310+ Trip Unit Only
Ultra High
Standard
Interrupting
Capacity
Max.
Cont.
Ampere
Rating
at 40 °C
125 KD4400F HKD4400F KDC4400F KES4125LS KES4125LSI — — — See Page
250 KD4400F HKD4400F KDC4400F KES4250LS KES4250LSI — — —
400 KD4400F HKD4400F KDC4400F KES4400LS KES4400LSI — — —
Notes
1
2
3
4
5
600 Vac
Rated
35 kAIC at
480 Vac
Catalog Number Catalog Number
For AC use only.
Required for four-wire systems if neutral protection is desired.
Included with LSG and LSIG trip units.
Trip unit includes protected neutral pole. Use corresponding three-pole trip unit if protected neutral pole is not required.
Fully rated neutral pole protection is standard. For 50% rated protection on neutral pole, add Suffix E to four-pole trip unit catalog number.
High
Interrupting
Capacity
600 Vac
Rated
65 kAIC at
480 Vac
Interrupting
Capacity
Current
Limiting
600 Vac
Rated
100 kAIC
at 480 Vac
Standard Options
LS LSI LSG LSIG
Adjustable
Short Time
Pickup with
2
t Short
I
Delay Ramp
Independently
Adjustable
Short Time
Pickup and
Delay
1
Adjustable
Short Time
Pickup with
2
t Short
I
Delay and
Ground Fault
Protection
Independently
Adjustable
Short Time
Pickup and
Delay and
Ground Fault
Protection
45
Neutral CT for
LSG and LSIG
23
Terminal
Information
V4-T2-309
Volume 4—Circuit Protection CA08100005E—March 2020 V4-T2-295
Molded Case Circuit Breakers
2.4
Type KDB with Digitrip 310+ Non-Interchangeable Trip Unit Suitable for Reverse Feed
See 310+ adjustability specifications on Page V4-T2-312.
2
Maximum
Continuous
Ampere
Rating
at 40 °C
125 3 KDB3125FT33W KDB3125FT32W KDB3125FT35W KDB3125FT36W LGFCT125 See Page
250 3 KDB3250FT33W KDB3250FT32W KDB3250FT35W KDB3250FT36W LGFCT250
400 3 KDB3400FT33W KDB3400FT32W KDB3400FT35W KDB3400FT36W LGFCT400
Type HKDB with Digitrip 310+ Non-Interchangeable Trip Unit Suitable for Reverse Feed
See 310+ adjustability specifications on Page V4-T2-312.
Maximum
Continuous
Ampere
Rating
at 40 °C
125 3 HKDB3125FT33W HKDB3125FT32W HKDB3125FT35W HKDB3125FT36W LGFCT125 See Page
250 3 HKDB3250FT33W HKDB3250FT32W HKDB3250FT35W HKDB3250FT36W LGFCT250
400 3 HKDB3400FT33W HKDB3400FT32W HKDB3400FT35W HKDB3400FT36W LGFCT400
Number
of Poles
Number
of Poles
Series C
Factory Assembled Circuit Breaker Consisting of Frame and Trip Unit Less Terminals
Standard
LS
Adjustable Short Time
Pickup with I
Delay Ramp
Catalog Number Catalog Number
Factory Assembled Circuit Breaker Consisting of Frame and Trip Unit Less Terminals
Standard
LS
Adjustable Short Time
Pickup with I
Delay Ramp
Catalog Number Catalog Number
2
t Short
2
t Short
Optional
LSI LSG LSIG
Independently Adjustable
Short Time Pickup and
Delay
Optional
LSI LSG LSIG
Independently Adjustable
Short Time Pickup and
Delay
Adjustable Short Time
Pickup with I
Delay and Ground Fault
Protection
Adjustable Short Time
Pickup with I
Delay and Ground Fault
Protection
2
t Short
2
t Short
1
Independently Adjustable
Short Time Pickup and
Ground Fault Protection
1
Independently Adjustable
Short Time Pickup and
Ground Fault Protection
Neutral CT for
LSG and LSIG
Neutral CT for
LSG and LSIG
23
23
Ter mi na l
Information
V4-T2-310
Ter mi na l
Information
V4-T2-310
100% Rated Types CKD and CHKD Electronic Circuit Breakers
The NEC allows the breaker to be rated at 100% of its frame size in an assembly, provided that 90 °C wire is applied at the 75 °C
ampacity. All 100% rated circuit breakers have electronic trip units.
100% Rated Types CKD and CHKD Electronic Circuit Breakers—Three-Pole
See 310+ adjustability specifications on Page V4-T2-312.
Circuit Breaker Frame Only Digitrip RMS 310+ Trip Unit Only
Standard Options
Standard
Interrupting
Maximum
Continuous
Ampere
Rating
at 40 °C
125 CKD3400F CHKD3400F KES3125LS KES3125LSI KES3125LSG KES3125LSIG LGFCT125 See Page
250 CKD3400F CHKD3400F KES3250LS KES3250LSI KES3250LSG KES3250LSIG LGFCT250
400 CKD3400F CHKD3400F KES3400LS KES3400LSI KES3400LSG KES3400LSIG LGFCT400
Notes
1
For AC use only.
2
Required for four-wire systems if neutral protection is desired.
3
Included with LSG and LSIG trip units.
Capacity
35 kAIC at
480 Vac
Catalog Number Catalog Number
High
Interrupting
Capacity
65 kAIC at
480 Vac
Adjustable
Short Time
Pickup with
2
t Short
I
Delay Ramp
Independently
Adjustable
Short Time
Pickup and
Delay
Adjustable
Short Time
Pickup with
2
t Short
I
Delay and
Ground Fault
Protection
Independently
Adjustable
Short Time
Pickup and
Delay and
Ground Fault
Protection
Neutral CT for
LSG and LSIG
23
Terminal
Information
V4-T2-309
V4-T2-296 Volume 4—Circuit Protection CA08100005E—March 2020
Molded Case Circuit Breakers
Series C
Types DK and KDB Thermal-Magnetic Circuit Breakers with Non-Interchangeable Trip Units
Suitable for reverse feed application.
Types DK and KDB Thermal-Magnetic Circuit Breakers with Non-Interchangeable Trip Units
240 Vac Rated, 250 Vdc 600 Vac Rated, 250 Vdc
Maximum
Continuous
Ampere
Rating
at 40 °C
Tw o - P o l e
100 — — — KDB2100W KDB2100
125 — — — KDB2125W KDB2125
150 — — — KDB2150W KDB2150
175 — — — KDB2175W KDB2175
200 — — — KDB2200W KDB2200
225 — — — KDB2225W KDB2225
250 DK2250W DK2250Y DK2250 KDB2250W KDB2250
300 DK2300W DK2300Y DK2300 KDB2300W KDB2300
350 DK2350W DK2350Y DK2350 KDB2350W KDB2350
400 DK2400W DK2400Y DK2400 KDB2400W KDB2400
Three-Pole
100 — — — KDB3100W KDB3100
125 — — — KDB3125W KDB3125
150 — — — KDB3150W KDB3150
175 — — — KDB3175W KDB3175
200 — — — KDB3200W KDB3200
225 — — — KDB3225W KDB3225
250 DK3250W DK3250Y DK3250 KDB3250W KDB3250
300 DK3300W DK3300Y DK3300 KDB3300W KDB3300
350 DK3350W DK3350Y DK3350 KDB3350W KDB3350
400 DK3400W DK3400Y DK3400 KDB3400W KDB3400
Complete Circuit Breaker Complete Circuit Breaker
Without Line and
Load Terminals
Catalog
Number
With Line
Terminals Only
Catalog
Number
With Standard Line and
Load Terminals Only
Catalog
Number
Without Line and
Load Terminals
Catalog
Number
With Standard Line
and Load Terminals
Catalog
Number
2.4
2
Volume 4—Circuit Protection CA08100005E—March 2020 V4-T2-297
Molded Case Circuit Breakers
2.4
Molded Case Switches
Eaton’s molded case
switches are used as
2
compact switches in
applications requiring high
current switching capabilities.
Molded case switches are
constructed of circuit breaker
Molded Case Switches
Maximum
Continuous
Ampere
Rating
at 40 °C
Tw o - P o l e
400 DK2400K KD2400K KDB2400K
Three-Pole
400 DK3400K KD3400K KDB3400K
Four-Pole
400 — KD4400K KDB4400K
Note
Molded case switches may open above 4000 amperes.
Series C
components and are of the
high instantaneous automatic
type. Molded case switches
are listed in accordance with
Underwriters Laboratories
Standard UL 489.
240 Vac Maximum, 250 Vdc 600 Vac Maximum, 250 Vdc 600 Vac Maximum, 250 Vdc
Complete Circuit Breaker
with Standard Line and
Load Terminals
Catalog
Number
— HKD2400K HKDB2400K
— HKD3400K HKDB3400K
— HKD4400K HKDB4400K
Complete Circuit Breaker
with Standard Line and
Load Terminals
Catalog
Number
Complete Circuit Breaker
with Standard Line and
Load Terminals. Suitable for
Reverse Feed Use
Catalog
Number
V4-T2-298 Volume 4—Circuit Protection CA08100005E—March 2020
Molded Case Circuit Breakers
Series C
Digitrip OPTIM 550 Electronic Circuit Breakers with Interchangeable Rating Plug
Order as individual components: breaker frame (which includes trip unit), rating plug, terminals.
Digitrip OPTIM 550 Electronic Circuit Breakers with Interchangeable Rating Plug
Circuit Breaker Frame Only Digitrip OPTIM Rating Plug Only
L – Adjustable Long Delay Pickup (I
S – Adjustable Short Delay Pickup with Adjustable Short Delay Time (I2t or Flat Response)
I – Adjustable Instantaneous Pickup
G – Adjustable Ground Fault Pickup with Adjustable Ground Fault Time (I
Maximum
Continuous
Ampere
Rating
at 40 °C
Three-Pole Standard Interrupting Capacity 600 Vac Rated 35 kAIC at 480 Vac
125 KD3125T52W KD3125T56W KD3125T57W 70 ORPK125A70
250 KD3250T52W KD3250T56W KD3250T57W 125 ORPK025A125
400 KD3400T52W KD3400T56W KD3400T57W 200 ORPK40A200
Notes
1
Long delay I4t response selection limits short delay time to flat response.
2
Zone interlocking, PowerNet, or both features can be added at the factory by adding suffixes ZG, PN or ZGP respectively to above catalog number.
A – Adjustable Ground Fault Alarm with Adjustable Ground Fault Time (I
OPTIM 550
LSI LSIG LSIA
Catalog
Number
2
) with Adjustable Long Delay Time (I2t or I4t Response)
r
2
t or Flat Response)
2
t or Flat Response)
Catalog
Number
Catalog
Number
1
Ampere
Rating
90 ORPK125A90
100 ORPK125A100
110 ORPK125A110
125 ORPK125A125
150 ORPK025A150
175 ORPK025A175
200 ORPK025A200
225 ORPK025A225
250 ORPK025A250
225 ORPK40A225
250 ORPK40A250
300 ORPK40A300
350 ORPK40A350
400 ORPK40A400
2.4
Fixed Rating Plug
Catalog
Number
2
Volume 4—Circuit Protection CA08100005E—March 2020 V4-T2-299
Molded Case Circuit Breakers
2.4
Digitrip OPTIM 550 Electronic Circuit Breakers with Interchangeable Rating Plug, continued
2
Maximum
Continuous
Ampere
Rating
at 40 °C
Three-Pole High Interrupting Capacity 600 Vac Rated 65 kAIC at 480 Vac
125 HKD3125T52W HKD3125T56W HKD3125T57W 70 ORPK125A70
250 HKD3250T52W HKD3250T56W HKD3250T57W 125 ORPK025A125
400 HKD3400T52W HKD3400T56W HKD3400T57W 200 ORPK40A200
Notes
1
Long delay I4t response selection limits short delay time to flat response.
2
Zone interlocking, PowerNet, or both features can be added at the factory by adding suffixes ZG, PN or ZGP respectively to above catalog number.
Series C
Circuit Breaker Frame Only Digitrip OPTIM Rating Plug Only
L – Adjustable Long Delay Pickup (I
S – Adjustable Short Delay Pickup with Adjustable Short Delay Time (I2t or Flat Response)
I – Adjustable Instantaneous Pickup
G – Adjustable Ground Fault Pickup with Adjustable Ground Fault Time (I
A – Adjustable Ground Fault Alarm with Adjustable Ground Fault Time (I
OPTIM 550
LSI LSIG LSIA
Catalog
Number
2
) with Adjustable Long Delay Time (I2t or I4t Response)
r
2
t or Flat Response)
2
t or Flat Response)
Catalog
Number
Catalog
Number
1
Ampere
Rating
90 ORPK125A90
100 ORPK125A100
110 ORPK125A110
125 ORPK125A125
150 ORPK025A150
175 ORPK025A175
200 ORPK025A200
225 ORPK025A225
250 ORPK025A250
225 ORPK40A225
250 ORPK40A250
300 ORPK40A300
350 ORPK40A350
400 ORPK40A400
Fixed Rating Plug
Catalog
Number
V4-T2-300 Volume 4—Circuit Protection CA08100005E—March 2020
Molded Case Circuit Breakers
Series C
Digitrip OPTIM 550 Electronic Circuit Breakers with Interchangeable Rating Plug, continued
Circuit Breaker Frame Only Digitrip OPTIM Rating Plug Only
L – Adjustable Long Delay Pickup (I
S – Adjustable Short Delay Pickup with Adjustable Short Delay Time (I2t or Flat Response)
I – Adjustable Instantaneous Pickup
G – Adjustable Ground Fault Pickup with Adjustable Ground Fault Time (I
Maximum
Continuous
Ampere
Rating
at 40 °C
Three-Pole Ultra High Interrupting Capacity Current Limiting 600 Vac Rated 100 kAIC at 480 Vac
125 KDC3125T52W KDC3125T56W KDC3125T57W 70 ORPK125A70
250 KDC3250T52W KDC3250T56W KDC3250T57W 125 ORPK025A125
400 KDC3400T52W KDC3400T56W KDC3400T57W 200 ORPK40A200
Notes
1
Long delay I4t response selection limits short delay time to flat response.
2
Zone interlocking, PowerNet, or both features can be added at the factory by adding suffixes ZG, PN or ZGP respectively to above catalog number.
A – Adjustable Ground Fault Alarm with Adjustable Ground Fault Time (I
OPTIM 550
LSI LSIG LSIA
Catalog
Number
2
) with Adjustable Long Delay Time (I2t or I4t Response)
r
2
t or Flat Response)
2
t or Flat Response)
Catalog
Number
Catalog
Number
1
Fixed Rating Plug
Ampere
Rating
90 ORPK125A90
100 ORPK125A100
110 ORPK125A110
125 ORPK125A125
150 ORPK025A150
175 ORPK025A175
200 ORPK025A200
225 ORPK025A225
250 ORPK025A250
225 ORPK40A225
250 ORPK40A250
300 ORPK40A300
350 ORPK40A350
400 ORPK40A400
Catalog
Number
2.4
2
Volume 4—Circuit Protection CA08100005E—March 2020 V4-T2-301
Molded Case Circuit Breakers
2.4
Digitrip OPTIM 1050 Electronic Circuit Breakers with Interchangeable Rating Plug
Order as individual components: breaker frame (which includes trip unit), rating plug, terminals.
2
Digitrip OPTIM 1050 Electronic Circuit Breakers with Interchangeable Rating Plug
Maximum
Continuous
Ampere
Rating
at 40 °C
Three-Pole Standard Interrupting Capacity 600 Vac Rated 35 kAIC at 480 Vac
125 KD3125T106W KD3125T107W 70 ORPK125A70
250 KD3250T106W KD3250T107W 125 ORPK025A125
400 KD3400T106W KD3400T107W 200 ORPK40A200
Notes
1
Long delay I4t response selection limits short delay time to flat response.
2
Factory sealed.
Series C
Circuit Breaker Frame Only Digitrip OPTIM Rating Plug Only
L – Adjustable Long Delay Pickup (I
S – Adjustable Short Delay Pickup with Adjustable Short Delay Time (I2t or Flat Response)
I – Adjustable Instantaneous Pickup
G – Adjustable Ground Fault Pickup with Adjustable Ground Fault Time (I
A – Adjustable Ground Fault Alarm with Adjustable Ground Fault Time (I
OPTIM 1050
LSIG LSIA
Catalog
Number
2
) with Adjustable Long Delay Time (I2t or I4t Response)
r
2
t or Flat Response)
2
t or Flat Response)
Catalog
Number
1
Ampere
Rating
90 ORPK125A90
100 ORPK125A100
110 ORPK125A110
125 ORPK125A125
150 ORPK025A150
175 ORPK025A175
200 ORPK025A200
225 ORPK025A225
250 ORPK025A250
225 ORPK40A22
250 ORPK40A250
300 ORPK40A300
350 ORPK40A350
400 ORPK40A400
Fixed Rating Plug
Catalog
Number
V4-T2-302 Volume 4—Circuit Protection CA08100005E—March 2020
Molded Case Circuit Breakers
Series C
Digitrip OPTIM 1050 Electronic Circuit Breakers with Interchangeable Rating Plug, continued
Circuit Breaker Frame Only Digitrip OPTIM Rating Plug Only
L – Adjustable Long Delay Pickup (I
S – Adjustable Short Delay Pickup with Adjustable Short Delay Time (I2t or Flat Response)
I – Adjustable Instantaneous Pickup
G – Adjustable Ground Fault Pickup with Adjustable Ground Fault Time (I
Maximum
Continuous
Ampere
Rating
at 40 °C
Three-Pole High Interrupting Capacity 600 Vac Rated 65 kAIC at 480 Vac
125 HKD3125T106W HKD3125T107W 70 ORPK125A70
250 HKD3250T106W HKD3250T107W 125 ORPK025A125
400 HKD3400T106W HKD3400T107W 200 ORPK40A200
Notes
1
Long delay I4t response selection limits short delay time to flat response.
2
Factory sealed.
A – Adjustable Ground Fault Alarm with Adjustable Ground Fault Time (I
OPTIM 1050
LSIG LSIA
Catalog
Number
2
) with Adjustable Long Delay Time (I2t or I4t Response)
r
2
t or Flat Response)
2
t or Flat Response)
Catalog
Number
1
Fixed Rating Plug
Ampere
Rating
90 ORPK125A90
100 ORPK125A100
110 ORPK125A110
125 ORPK125A125
150 ORPK025A150
175 ORPK025A175
200 ORPK025A200
225 ORPK025A225
250 ORPK025A250
225 ORPK40A225
250 ORPK40A250
300 ORPK40A300
350 ORPK40A350
400 ORPK40A400
Catalog
Number
2.4
2
Volume 4—Circuit Protection CA08100005E—March 2020 V4-T2-303
Molded Case Circuit Breakers
2.4
Digitrip OPTIM 1050 Electronic Circuit Breakers with Interchangeable Rating Plug, continued
2
Maximum
Continuous
Ampere
Rating
at 40 °C
Three-Pole Ultra High Interrupting Capacity Current Limiting 600 Vac Rated 100 kAIC at 480 Vac
125 KDC3125T106W KDC3125T107W 70 ORPK125A70
250 KDC3250T106W KDC3250T107W 125 ORPK025A125
400 KDC3400T106W KDC3400T107W 200 ORPK40A200
Notes
1
Long delay I4t response selection limits short delay time to flat response.
2
Factory sealed.
Series C
Circuit Breaker Frame Only Digitrip OPTIM Rating Plug Only
L – Adjustable Long Delay Pickup (I
S – Adjustable Short Delay Pickup with Adjustable Short Delay Time (I2t or Flat Response)
I – Adjustable Instantaneous Pickup
G – Adjustable Ground Fault Pickup with Adjustable Ground Fault Time (I
A – Adjustable Ground Fault Alarm with Adjustable Ground Fault Time (I
OPTIM 1050
LSIG LSIA
Catalog
Number
2
) with Adjustable Long Delay Time (I2t or I4t Response)
r
2
t or Flat Response)
2
t or Flat Response)
Catalog
Number
1
Ampere
Rating
90 ORPK125A90
100 ORPK125A100
110 ORPK125A110
125 ORPK125A125
150 ORPK025A150
175 ORPK025A175
200 ORPK025A200
225 ORPK025A225
250 ORPK025A250
225 ORPK40A225
250 ORPK40A250
300 ORPK40A300
350 ORPK40A350
400 ORPK40A400
Fixed Rating Plug
Catalog
Number
V4-T2-304 Volume 4—Circuit Protection CA08100005E—March 2020
Molded Case Circuit Breakers
Series C
100% Rated Digitrip OPTIM 550 Electronic Circuit Breakers with Interchangeable Rating Plug
Order as individual components: breaker frame (which includes trip unit), rating plug, terminals.
100% Rated Digitrip OPTIM 550 Electronic Circuit Breakers with Interchangeable Rating Plug
Circuit Breaker Frame Only Digitrip OPTIM Rating Plug Only
L – Adjustable Long Delay Pickup (I
S – Adjustable Short Delay Pickup with Adjustable Short Delay Time (I2t or Flat Response)
I – Adjustable Instantaneous Pickup
G – Adjustable Ground Fault Pickup with Adjustable Ground Fault Time (I
Maximum
Continuous
Ampere
Rating
at 40 °C
Three-Pole Standard Interrupting Capacity 600 Vac Rated 35 kAIC at 480 Vac
125 CKD3125T52W CKD3125T56W CKD3125T57W 70 ORPK125A70
250 CKD3250T52W CKD3250T56W CKD3250T57W 125 ORPK025A125
400 CKD3400T52W CKD3400T56W CKD3400T57W 200 ORPK40A200
Notes
1
Long delay I4t response selection limits short delay time to flat response.
2
Zone interlocking, PowerNet, or both features can be added at the factory by adding suffixes ZG, PN or ZGP respectively to above catalog number
(refer to Page V4-T2-423).
A – Adjustable Ground Fault Alarm with Adjustable Ground Fault Time (I
OPTIM 550
LSI LSIG LSIA
Catalog
Number
2
) with Adjustable Long Delay Time (I2t or I4t Response)
r
2
t or Flat Response)
2
t or Flat Response)
Catalog
Number
Catalog
Number
1
Ampere
Rating
90 ORPK125A90
100 ORPK125A100
110 ORPK125A110
125 ORPK125A125
150 ORPK025A150
175 ORPK025A175
200 ORPK025A200
225 ORPK025A225
250 ORPK025A250
225 ORPK40A225
250 ORPK40A250
300 ORPK40A300
350 ORPK40A350
400 ORPK40A400
2.4
Fixed Rating Plug
Catalog
Number
2
Volume 4—Circuit Protection CA08100005E—March 2020 V4-T2-305
Molded Case Circuit Breakers
2.4
100% Rated Digitrip OPTIM 550 Electronic Circuit Breakers with Interchangeable Rating Plug, continued
2
Maximum
Continuous
Ampere
Rating
at 40 °C
Three-Pole High Interrupting Capacity 600 Vac Rated 65 kAIC at 480 Vac
125 CHKD3125T52W CHKD3125T56W CHKD3125T57W 70 ORPK125A70
250 CHKD3250T52W CHKD3250T56W CHKD3250T57W 125 ORPK025A125
400 CHKD3400T52W CHKD3400T56W CHKD3400T57W 200 ORPK40A200
Notes
1
Long delay I4t response selection limits short delay time to flat response.
2
Zone interlocking, PowerNet, or both features can be added at the factory by adding suffixes ZG, PN or ZGP respectively to above catalog number.
Series C
Circuit Breaker Frame Only Digitrip OPTIM Rating Plug Only
L – Adjustable Long Delay Pickup (I
S – Adjustable Short Delay Pickup with Adjustable Short Delay Time (I2t or Flat Response)
I – Adjustable Instantaneous Pickup
G – Adjustable Ground Fault Pickup with Adjustable Ground Fault Time (I
A – Adjustable Ground Fault Alarm with Adjustable Ground Fault Time (I
OPTIM 550
LSI LSIG LSIA
Catalog
Number
2
) with Adjustable Long Delay Time (I2t or I4t Response)
r
2
t or Flat Response)
2
t or Flat Response)
Catalog
Number
Catalog
Number
1
Ampere
Rating
90 ORPK125A90
100 ORPK125A100
110 ORPK125A110
125 ORPK125A125
150 ORPK025A150
175 ORPK025A175
200 ORPK025A200
225 ORPK025A225
250 ORPK025A250
225 ORPK40A225
250 ORPK40A250
300 ORPK40A300
350 ORPK40A350
400 ORPK40A400
Fixed Rating Plug
Catalog
Number
V4-T2-306 Volume 4—Circuit Protection CA08100005E—March 2020
Molded Case Circuit Breakers
Series C
100% Rated Digitrip OPTIM 1050 Electronic Circuit Breakers with Interchangeable Rating Plug
Order as individual components: breaker frame (which includes trip unit), rating plug, terminals.
100% Rated Digitrip OPTIM 1050 Electronic Circuit Breakers with Interchangeable Rating Plug
Circuit Breaker Frame Only Digitrip OPTIM Rating Plug Only
L – Adjustable Long Delay Pickup (I
S – Adjustable Short Delay Pickup with Adjustable Short Delay Time (I2t or Flat Response)
I – Adjustable Instantaneous Pickup
G – Adjustable Ground Fault Pickup with Adjustable Ground Fault Time (I
Maximum
Continuous
Ampere
Rating
at 40 °C
Three-Pole Standard Interrupting Capacity 600 Vac Rated 35 kAIC at 480 Vac
125 CKD3125T106W CKD3125T107W 70 ORPK125A70
250 CKD3250T106W CKD3250T107W 125 ORPK025A125
400 CKD3400T106W CKD3400T107W 200 ORPK40A200
Notes
1
Long delay I4t response selection limits short delay time to flat response.
2
Factory sealed.
A – Adjustable Ground Fault Alarm with Adjustable Ground Fault Time (I
OPTIM 1050
LSIG LSIA
Catalog
Number
2
) with Adjustable Long Delay Time (I2t or I4t Response)
r
2
t or Flat Response)
2
t or Flat Response)
Catalog
Number
1
Ampere
Rating
90 ORPK125A90
100 ORPK125A100
110 ORPK125A110
125 ORPK125A125
150 ORPK025A150
175 ORPK025A175
200 ORPK025A200
225 ORPK025A225
250 ORPK025A250
225 ORPK40A225
250 ORPK40A250
300 ORPK40A300
350 ORPK40A350
400 ORPK40A400
2.4
Fixed Rating Plug
Catalog
Number
2
Volume 4—Circuit Protection CA08100005E—March 2020 V4-T2-307
Molded Case Circuit Breakers
2.4
100% Rated Digitrip OPTIM 1050 Electronic Circuit Breakers with Interchangeable Rating Plug, continued
2
Maximum
Continuous
Ampere
Rating
at 40 °C
Three-Pole High Interrupting Capacity 600 Vac Rated 65 kAIC at 480 Vac
125 CHKD3125T106W CHKD3125T107W 70 ORPK125A70
250 CHKD3250T106W CHKD3250T107W 125 ORPK025A125
400 CHKD3400T106W CHKD3400T107W 200 ORPK40A200
Notes
1
Long delay I4t response selection limits short delay time to flat response.
2
Factory sealed.
Series C
Circuit Breaker Frame Only Digitrip OPTIM Rating Plug Only
L – Adjustable Long Delay Pickup (I
S – Adjustable Short Delay Pickup with Adjustable Short Delay Time (I2t or Flat Response)
I – Adjustable Instantaneous Pickup
G – Adjustable Ground Fault Pickup with Adjustable Ground Fault Time (I
A – Adjustable Ground Fault Alarm with Adjustable Ground Fault Time (I
OPTIM 1050
LSIG LSIA
Catalog
Number
2
) with Adjustable Long Delay Time (I2t or I4t Response)
r
2
t or Flat Response)
2
t or Flat Response)
Catalog
Number
1
Ampere
Rating
90 ORPK125A90
100 ORPK125A100
110 ORPK125A110
125 ORPK125A125
150 ORPK025A150
175 ORPK025A175
200 ORPK025A200
225 ORPK025A225
250 ORPK025A250
225 ORPK40A225
250 ORPK40A250
300 ORPK40A300
350 ORPK40A350
400 ORPK40A400
Fixed Rating Plug
Catalog
Number
V4-T2-308 Volume 4—Circuit Protection CA08100005E—March 2020
Accessories Selection Guide and Ordering Guide
Molded Case Circuit Breakers
Series C
2.4
Line and Load Terminals
Eaton’s line and load
terminals provide wire
connecting capabilities for
specific ranges of continuous
current ratings and wire
types. All terminals comply
with Underwriters
UL 486A and UL 486B and
CSA Standard C22.2 No. 65,
or Electrical Bulletin 1165.
Unless otherwise specified,
K-Frame circuit breaker line
and load terminals are
shipped separately for field
installation.
Ordering Information
K-Frame circuit breakers use
Cu/AI terminals as standard.
When optional copper or Cu/
AI terminals are required,
order by catalog number.
Specify if factory installation
is required.
Laboratories Standards
Tab is 1/4 x.032
TA401K TA400K, T400K TA350K, T350K TA300K, T300K T400KCW, TA400KCW,
TA401KCW
Line and Load Terminals
Maximum
Breaker
Amperes
Standard Cu/AI Pressure Terminals
225 Aluminum Cu/AI 3–350 (1) 35–185 TA300K
400 Aluminum Cu/AI 250–500 (1) 120–240 TA350K
400 Aluminum Cu/AI 3/0–250 (2) 95–120 2TA400K
400 Aluminum Cu/AI 3/0–250 (2) 95–120 3TA400K
400 Aluminum Cu/AI 3/0–250 (2) 95–120 4TA400K
Optional Copper and Cu/AI Pressure Type Terminals
225 Copper Cu 3–350 (1) 35–185 T300K
400 Copper Cu 250–500 (1) 120–240 T350K
400 Copper Cu 3/0–250 (2) 95–120 2T400K
400 Aluminum Cu/AI 2/0–250 (2)
400 Aluminum Cu/AI 500–750 (1) 300–400 2TA402K
400 Copper Cu 500–750 (1) — 2T402K
Notes
1
Individually packed.
2
Terminal kits contain one terminal for each pole and one terminal cover.
3
Two-pole kit.
4
Three-pole kit.
5
Four-pole kit.
6
Terminal kits contain one terminal for each pole and three interphase barriers.
Ter mi na l
Body
Material
Wire
Typ e
AWG Wire
Range/No.
Conductors
or
2/0–500 (1)
Metric Wire
2
Range mm
70–120 2TA401K
70–240 3TA401K
70–240 4TA401K
Ter mi na l
Catalog
Number
1
3T400K
4T400K
3TA402K
4TA402K
3T402K
4T402K
1
1
23
24
56
1
3
4
5
23
24
56
23
24
56
23
24
56
TA402K, T402K
Terminals with
Control Wire Termination
Catalog
Number
—
—
2TA400KCW
3TA400KCW
4TA400KCW
—
—
2T400KCW
3T400KCW
4T400KCW
2TA401KCW
3TA401KCW
4TA401KCW
—
—
—
—
—
—
23
24
56
23
24
56
23
24
56
2
Volume 4—Circuit Protection CA08100005E—March 2020 V4-T2-309
Molded Case Circuit Breakers
2.4
Accessories
Allowable Accessory Combinations
Different combinations of accessories can be supplied, depending on the types of accessories
2
and the number of poles in the circuit breaker.
KD Frame Accessories
Description
Internal Accessories (Only One Internal Accessory Per Pole)
Alarm lockout (Make/Break)
Alarm lockout (2Make/2Break)
Auxiliary switch (1A, 1B)
Auxiliary switch (2A, 2B)
Auxiliary switch (3A, 3B)
Auxiliary switch and alarm switch combination
Shunt trip—standard
Shunt trip—low energy
Undervoltage release mechanism
PowerNet or zone interlock kit (OPTIM 550)
External Accessories
End cap kit V4-T2-440
Keeper nut V4-T2-440
Control wire terminal kit V4-T2-441
Terminal adapter V4-T2-441
Multiwire connectors V4-T2-442
Rea
r fed te
Base mounting hardware V4-T2-443
Terminal shields V4-T2-445
Interphase barriers V4-T2-445
Non-padlockable handle block V4-T2-446
P
adloc
kable handle block V4-T2-446
Padlockable handle lock hasp V4-T2-447
Cylinder lock V4-T2-447
Key Interlock kit V4-T2-448
Sliding bar interlock—requires two breakers V4-T2-449
Walking beam interlock—requires two breakers V4-T2-449
Electrical (solenoid) operator V4-T2-450
Plug-in adapters V4-T2-451
Re
ar con
necting studs V4-T2-453
Panelboard connecting straps V4-T2-454
Handle mechanisms V4-T2-534
Handle extension V4-T2-546
IQ Energy Sentinel V4-T2-456
Solid
-state
OPTIM System Components Three Poles
Breaker interface module (BIM)
Digitrip OPTIMizer
Auxiliary power module
Modifications (Refer to Eaton)
Special calibration —
Moisture fungus treatment V4-T2-246
Freeze-tested circuit breakers —
Marine/naval application —
Legend
n Applicable in indicated pole position
o May be mounted on left or right pole—not both
l Accessory available/modification available
Notes
1
Two-pole breaker supplied in three-pole frame. Current carrying parts omitted from center pole.
2
Shunt trip and UVR cannot be mounted in right poles on KES or OPTIM trip units. Standard internal accessories cannot be mounted in right pole on any K-Frame OPTIM trip unites. Special OPTIM
ground fault and zone interlock accessories are available for field installation in the right pole of K-Frame 550 OPTIM trip units. Factory installed 2a/2b and bell/aux are available for factory
installation. K-Frame breakers equipped with OPTIM 1050 trip units include aux-bell alarm in the right pole.
2
rminals V4-T2-442
(electronic) portable test kit V4-T2-456
Series C
1
Reference
Page
V4-T2-406
V4-T2-406
V4-T2-408
V4-T2-408
V4-T2-408
V4-T2-409
2
2
V4-T2-412
V4-T2-415
V4-T2-420
V4-T2-423
V4-T2-457
V4-T2-457
V4-T2-457
Two-Pole
Left Right Left Center Right Left Center Right Neutral
— n o —o n ———
——o —o n ———
— n n —n n —n —
——n —n n —n —
——n —n n —n —
——o —o o —o —
— n n —n n —n —
——n —n n ———
— n n —n n ———
————n ———
l l l l l l l l l
l l l l l l l l l
l l l l l l l l l
l l l l l l l l l
l l l l l l l l l
l l l l l l l l l
l l l l l l l l l
l l l l l l l l l
l l l l l l l l l
n ——n ——n ——
———n —————
— n o o o —o —
o o o o ————
n o o o o —o —
——l l l ————
——l l l l l l l
——l l l l l l l
l l l l l l l l l
l l l l l l l l l
l l l l l l l l l
l l l l l l l l l
l l l l l l l l l
——l l l l l l l
l l l l l l l l l
—————————
—————————
—————————
l l l l l l l l l
l l l l l l l l l
l l l l l l l l l
l l l l l l l l l
Three-Pole Four-Pole
V4-T2-310 Volume 4—Circuit Protection CA08100005E—March 2020
Molded Case Circuit Breakers
310+ Electronic Trip Unit Accessories
Description Catalog Number
Electronic portable test kit MTST230V
Trip unit tamper protection wire seal 5108A03H01
External neutral sensor, 400 A LGFCT400
External neutral sensor, 250 A LGFCT250
External neutral sensor, 125 A LGFCT125
Breaker-mount cause-of-trip indication TRIP-LED
Breaker-mount ammeter module DIGIVIEW
Remote-mount ammeter module DIGIVIEWR06
Technical Data and Specifications
NEMA/UL 489/CSA Interrupting Capacity Ratings
Circuit
Breaker
Typ e
DK 2, 365 ———10
KDB 2, 3, 4 65 — 35 25 10
KD 2, 3, 4 65 — 35 25 10
HKD, HKDB 2, 3, 4 100 — 65 35 22
7
KDC
CKD 3 65 — 35 25 —
CHKD 3 100 — 65 35 —
Number
of Poles
2, 3, 4 200 — 100 65 22
Interrupting Capacity (kA Symmetrical Amperes)
Volts AC (50/60 Hz) Volts DC
4
240 277 480 600 250
1
2
2
2
3
56
Series C
2.4
2
IEC 157-1 (P1) Interrupting Capacity Ratings
Circuit
Breaker
Typ e
DK 2, 3 65—————10
KDB 2, 3, 4 654040———10
KD 2, 3, 4 654040———10
HKD, HKDB 2, 3, 4 100 65 65 — — — 22
KDC 2, 3, 4 200 100 100 — — — 22
Number
of Poles
Interrupting Capacity (kA Symmetrical Amperes)
Volts AC (50/60 Hz) Volts DC
4
240 380 415 440 500 600 250
56
UL 489 Current Limiting Data
2
Frame Circuit Ip (kA) I
KDC 240 V/200 kA 56.00 2.30
KDC 480 V/100 kA 53.30 5.60
KDC 600 V/50 kA 43.40 5.40
Notes
1
MTST230V applies to 100–230 Vac.
2
Included with all LD LSG and LSIG trip units and breakers.
3
Includes 6 ft cable for remote mounting; NEMA 3R rated.
4
Two-pole breaker supplied in three-pole frame. Current carrying parts omitted from center pole.
5
Two-pole circuit breaker or two outside poles of three-pole circuit breaker.
6
Time constant is 3 milliseconds minimum at 10 kA and 8 milliseconds minimum at 22 kA.
7
Current limiting.
T (106A2S)
Volume 4—Circuit Protection CA08100005E—March 2020 V4-T2-311
2.4
Molded Case Circuit Breakers
Series C
310+ Specifications
Trip Unit Type Digitrip RMS 310+
Breaker Type
2
Frame K
Frames available 125 A, 250 A, 400 A
Continuous current range (A) 55–400 A
Ground fault pickup (A) 50–400 A
Interrupting capacities at 480 Vac (kAIC) 35, 65, 100
100% rated Yes
Protection
Ordering options LS, LSI, LSG, LSIG, ALSI, ALSIG
Arcflash Reduction Maintenance System Remote enabled on ALSI, ALSIG
Interchangeable trip unit Yes
High load alarm, trip (suffix B20)
Ground fault alarm with trip (suffix B21)
Ground fault alarm, no trip (suffix B22) LSG, LSIG, ALSIG
Zone selective interlock (suffix ZG)
Cause of trip indication Yes (via TRIP-LED or DIGIVIEW)
Thru-cover accessories No
1
1
1
Yes
LSG, LSIG, ALSIG
LSI, LSIG, ALSI, ALSIG
310+ Adjustability Specifications
K-Frame
310+ Settings 125A 250 A 400 A
= continuous current or
I
r
long delay pickup (amperes)
(All 310+)
= long delay time (seconds)
t
r
(All 310+)
I
(x Ir) = short delay pickup (amperes)
sd
(All 310+)
= short delay time I2t (milliseconds)
t
sd
(LS and LSG)
t
= short delay time flat (milliseconds)
sd
(LSI, LSIG, ALSI, ALSIG)
(x In) = ground fault pickup (amperes)
I
g
(LSG, LSIG, ALSIG)
= ground fault delay time (milliseconds)
t
g
(LSG, LSIG, ALSIG)
Independently adjustable Instantaneous (Ii) setting
Maintenance Mode pickup (2.5 x In) (amperes)
(310+ with Maintenance Mode—ALSI and ALSIG)
Notes
1
B2x suffixes cannot be combined with B2x suffixes.
2
Not available for KD. Independently adjustable Ii setting available in LG, NG and RG ALSI and
ALSIG trip units.
Ir \ In
A (=Ir) 55 100 160
B (=Ir) 60 125 200
C (=Ir) 70 150 225
D (=Ir) 80 160 250
E (=Ir) 90 175 300
F (=Ir) 100 200 315
G (=Ir) 110 225 350
H (=Ir=In) 125 250 400
2222
4444
7777
10 10 10 10
12 12 12 12
15 15 15 15
20 20 20 20
24 24 24 24
Position 1 2 2x 2x
Position 2 3 3x 3x
Position 3 4 4x 4x
Position 4 5 5x 5x
Position 5 6 6x 6x
Position 6 7 7x 7x
Position 7 8 8x 8x
Position 8 10 10x 10x
Position 9 12 12x 12x
Fixed 67 @10x
Position 1 Inst
Position 2 120
Position 3 300
Position 1255080
Position 2 37.5 75 120
Position 3 50 100 160
Position 4 75 150 240
Position 5 100 200 320
Position 6 125 250 400
Position 1 Inst
Position 2 120
Position 3 300
2
Fixed 312 625 1000
V4-T2-312 Volume 4—Circuit Protection CA08100005E—March 2020
Molded Case Circuit Breakers
Specifications
Trip Unit Type Digitrip OPTIM 550 Digitrip OPTIM 1050
rms sensing Yes Yes
Breaker Type
Frame K K
Ampere range 125–400 A 125–400 A
Interrupting rating at 480 volts 35, 65, 100 (kA) 35, 65, 100 (kA)
Protection
Ordering options LSI, LSI(A), LSIG LSI(A), LSIG
Fixed rated plug (I
Overtemperature trip Yes Yes
Long Delay Protection (L)
Adjustable rating plug (I
Long delay pickup 0.4–1.0 x (I
Long delay time I
Long delay time I
Long delay thermal memory Yes Yes
High load alarm 0.5–1.0 x I
Short Delay Protection (S)
Short delay pickup 150–800% x (I
Short delay time I
Short delay time flat 100–500 ms 100–500 ms
Short delay time zone selective interlocking Yes
Instantaneous Protection (I)
Instantaneous pickup 200–800% x (I
Discriminator Yes Yes
Instantaneous override Yes Yes
Ground Fault Protection (G)
Ground fault alarm 20–100% x (I
Ground fault pickup 20–100% x (I
Ground fault delay I
Ground fault delay flat 100–500 ms 100–500 ms
Ground fault zone selective interlocking Yes
Ground fault thermal memory Yes Yes
System Diagnostics
Status LEDs Yes Yes
Cause of trip LEDs Yes Yes
Magnitude of trip information Yes Yes
Remote signal contact—ground alarm Yes
Local auxiliary and bell alarm contact Optional Included
System Monitoring
Digital display Yes
Current Yes Yes
Power and energy No Yes
Power quality—harmonics No Yes
Power factor No Yes
Communications
PowerNet Yes
Testing
Testing method OPTIMizer, BIM, PowerNet OPTIMizer, BIM, PowerNet
Legend
BIM = Breaker Interface Module
(A) = GF Alarm
= Sensor Rating
I
s
In = Rating Plug
= Long Delay Pickup Setting
I
r
Notes
1
Zone interlock kit.
2
By OPTIMizer/BIM.
3
Eaton’s PowerNet kit.
)YesYes
n
)NoNo
n
2
t 2–24 seconds 2–24 seconds
4
t 1–5 seconds 1–5 seconds
2
t 100–500 ms 100–500 ms
2
t 100–500 ms 100–500 ms
) 0.4–1.0 x (In)
n
r
) 150–800% x (Ir)
r
1
) 200–800% x (In)
n
) 20–100% x (Is)
s
) 20–100% x (Is)
s
1
1
2
3
0.5–1.0 x I
Yes
Yes
Yes
2
Yes
Yes
r
Series C
2.4
2
Volume 4—Circuit Protection CA08100005E—March 2020 V4-T2-313
Molded Case Circuit Breakers
5.49
(139.4)
ON
OFF
10.13
(257.2)
4.31
(109.6)
0.34 R
(8.7 R)
0.19 R
(4.8 R)
3.75
(95.3)
0.83
(21.0)
1.64
(41.7)
1.25
(31.8)
1.31
(33.3)
2.63
(66.7)
2.39
(60.7)
4.78
(121.5)
C
L
Handle
Front View
Side View
Front Cover Cutout
2.4
Dimensions and Weights
Approximate Dimensions in Inches (mm)
KD Frame
2
Number
of Poles Width Height Depth
2, 3 5.50 (149.7) 10.13 (257.3) 4.10 (104.1)
4 7.22 (183.4) 10.13 (257.3) 4.10 (104.1)
KD-Frame, Two- and Three-Pole
Series C
Approximate Shipping Weight, Lbs (kg)
KD Frame
Breaker
Type Two-Pole Three-Pole Two-Pole Three-Pole Two-Pole Three-Pole
DK10.0 (4.5)11.5 (5.2)————
KDB10.0 (4.5)11.5 (5.2)————
KD 10.0 (4.5) 11.5 (5.2) 7.5 (3.4) 8.5 (3.9) 1.5 (0.7) 1.5 (0.7)
HKD, HKDB 10.0 (4.5) 11.5 (5.2) 7.5 (3.4) 8.5 (3.9) 1.5 (0.7) 1.5 (0.7)
KDC 10.0 (4.5) 11.5 (5.2) 7.5 (3.4) 8.5 (3.9) 1.5 (0.7) 1.5 (0.7)
Note
1
V4-T2-314 Volume 4—Circuit Protection CA08100005E—March 2020
Complete Breaker Frame Only Trip Unit
Weights shown are for thermal-magnetic trip units. Three-pole electronic trip units weigh 2.5 lbs (1.1 kg).
1
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