Bulletin 140U
Molded Case Circuit Breakers
Multitap
End Cap
Optional
Optional
Optional
140U-J-MTL3A
140U-J-MTL6A
140U-J-ECM
Aluminum
Aluminum
Molded
Housing
1/4…20 screw
1/4…20 screw
—
50 lb-in
50 lb-in
—
5.6 N•m
5.6 N•m
—
Cu/Al
Cu/Al
—
60/75°C
60/75°C
—
(3)
(6)
—
(A) 3/8…1/2 in.
(B) 3/4…7/8 in.
(C) 1-1/4…1-3/8 in.
(A) 3/8…1/2 in.
(B) 3/4…7/8 in.
(C) 1-1/4…1-3/8 in.
—
(A) 9…13 mm
(B) 19…22 mm
(C) 32…35 mm
(A) 9…13 mm
(B) 19…22 mm
(C) 32…35 mm
—
#14…#2
#14…#6
—
2.5…25
2.5…10
—
Allen - 5/32 in. (4 mm)
Allen - 3/32 in.
Allen - 4 mm
275' Lb-in
70 lb-in
25 lb-in
7.9 N•m
2.8 N•m
31 N•m
Optional
Optional
Optional
140U-K-MTL3A
140U-K-MTL6A
140U-K-ECM
Aluminum
Aluminum
Molded
Housing
.375 x 25 screw
.375 x 25 screw
—
72 -96 lb-in
72 -96 lb-in
—
8.6…10.8 N•m
8.6…10.8 N•m
—
Cu/Al
Cu/Al
—
60/75°C
60/75°C
—
(3)
(6)
—
(A) 9/16.…3/4 in.
(B) 1-3/16.…1-1/2 in.
(C) 1-7/8…2-1/4 in.
(A) 9/16.…3/4 in.
(B) 1-3/16.…1-1/2 in.
(C) 1-7/8…2-1/4 in.
(A) 14…19 mm
(B) 30…38 mm
(C) 48…57 mm
(A) 14…19 mm
(B) 30…38 mm
(C) 48…57 mm
#12…2/0
#14…2/0
—
—
—
4…70
2.5…70
—
Allen - 3/16 in. (X mm)
Allen - 1/8 in. (3 mm)
Allen - 8 mm
120 lb-in
25 lb-in
275 Lb-in
13.5 N•m
2.8 N•m
31 -m
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11
Bulletin 140U
Molded Case Circuit Breakers
Terminal and Lug Specifications
Terminals
Frame Size
Lugs
Specification
Specification
Material
Dim.
—
—
—
—
—
—
Cat. No.
—
—
—
—
—
—
15/16(23.81) Material
—
—
—
—
—
—
—
—
—
—
—
—
Lb-in
—
—
—
—
—
—
N•m
1(25.4)
C
1/2(12.7)
Fastener
Torque
Slotted
Terminal Fastener
Hardware
Lb-in
42
Terminal
Fastener
Torque
—
—
—
—
—
—
N•m
3
Cable Type
—
—
—
—
—
—
Cable Temperature
Rating
—
—
—
—
—
—
L
Cable Quantity
A
Wire Strip
Length
C
Wire Range
—
—
—
—
—
—
in.
—
—
—
—
—
—
mm
—
—
—
—
—
—
AWG
—
—
—
—
—
—
mm2
—
—
—
—
—
—
—
—
—
—
—
—
Lb-in
—
—
—
—
—
—
N•m
—
—
—
—
—
—
—
Optional
Optional
Optional
—
—
140U-MTLC2
140U-MTLA4
—
—
Terminal Type
B
Wire Torque
Material
Std/Optional
Dim.
A
1-1/16(26.99) Cat. No.
—
140U-MTLA2
B
15/16(23.81) Material
—
Aluminum
Copper
Aluminum
—
—
d
1/2(12.7)
Fastener
Torque
Socket
Lb-in
275/400
N•m
31.1/45.2
M
A
Terminal Fastener
Hardware
Terminal
Fastener
Torque
C
—
—
—
Lb-in
—
—
275
275
275
—
—
N•m
—
31.1
31.1
31.1
—
—
Cable Type
—
Cu/Al
Cu only
Cu/Al
—
—
Cable Temperature
Rating
—
60/75°C
60/75°C
60/75°C
—
—
Cable Quantity
—
(2)
(2)
(4)
—
—
—
1-1/16
1-1/16
1 1/16
—
—
—
Wire Strip
Length
Wire Range
in.
mm
—
26.99
26.99
26.99
—
AWG
—
310…350
250…350
400…500
—
—
mm2
—
95…150
120…300
185…240
—
—
—
Socket
Socket
Socket
—
—
Lb-in
—
275
275
275
—
—
N•m
—
31.1
31.1
31.1
—
—
Terminal Type
B
Wire Torque
12
Mechanical Lugs
Std/Optional
A
B
Box Lugs
Visit our website: www.ab.com/catalogs
Bulletin 140U
Molded Case Circuit Breakers
Multitap
End Cap
Optional
Optional
Optional
140U-L-MTL3
140U-L-MTL6
140U-L-ECM
Aluminum
Aluminum
Molded
Housing
0.375 x 25 screw
0.375 x 25 screw
—
72 -96 lb-in
72 -96 lb-in
—
8.6…10.8 N•m
8.6…10.8 N•m
—
Cu/Al
Cu/Al
—
60/75°C
60/75°C
—
(3)
(A) 9/16.…3/4 (B) 1-3/16.…1in.
1/2 in.
(A) 14…19 mm
(B) 30…38
mm
(6)
(C) 1-7/8…21/4 in.
(C) 48…57
mm
(A) 9/16.…3/4 (B) 1-3/16.…1in.
1/2 in.
(A) 14…19 mm
—
(C) 1-7/8…21/4 in.
—
(C) 48…57
mm
—
(B) 30…38
mm
#12…2/0
#14…2/0
—
4…70
2.5…70
—
Allen - 3/16 in. (X mm)
Allen - 1/8 in. (3 mm)
Allen - 8 mm
120 lb-in
25 lb-in
275'Lb-in
13.5 N•m
2.8 N•m
31 N•m
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Visit our website: www.ab.com/catalogs
13
Bulletin 140U
Molded Case Circuit Breakers
Terminal and Lug Specifications
Terminals
Frame Size
Lugs
Specification
Specification
Box Lugs
CU/Plate
Std/Optional
—
Optional
Optional
—
A
1/2”(12.7)
Cat. No.
—
140U-N-TLA4
140U-N-TLA3
—
B
3/8”(9.53)
Material
—
Aluminum
Copper
—
C
Terminal Fastener
1/8”(3.175)
Hardware
Material
Dim.
Slip on box Terminal
lug
Fastener
Torque
—
Fastener
Torque
Lb-in
N•m
—
N
A
—
Lb-in
—
N•m
35…45
35…45
—
—
4…5
4…5
—
—
CU/Al
Cu/Al
—
Cable Temperature
Rating
—
60/75°C
60/75°C
—
Cable Quantity
—
(4)
(3)
—
—
4-3/8
4-3/8
—
111.125
111.125
Wire Range
in.
mm
—
AWG
—
mm2
—
11.7…240
85…185
—
Allen
Allen
—
Lb-in
—
375
375
—
N•m
—
42.2
42.4
—
Terminal Type
B
Wire Torque
14
—
Cable Type
Wire Strip
Length
C
Mechanical Lugs
4/0…500MCM 3/0…400 MCM
Visit our website: www.ab.com/catalogs
—
—
—
Bulletin 140U
Molded Case Circuit Breakers
Dimensions, Cont.
H Frame
.47
[ 11,9 ]
.88
[ 22,2 ]
.54
[ 13,6 ]
3.00
[ 76,2 ]
1.00
[ 25,4 ]
2.47
[ 62,7 ]
.97
[ 24,6 ]
5.50
[ 139,7 ]
3.81
[ 96,9 ]
3.44
[ 87,4 ]
1.00
[ 25,4 ]
1.00
[ 25,4 ]
2.93
[ 74,3 ]
.88
[ 22,4 ]
18
BUL 140U E125 FRAME
Visit our website: www.ab.com/catalogs
Bulletin 140U
Molded Case Circuit Breakers
4.00
3.00
2.00
1.00
1.00
1.00
.97
5.50
.97
3.81
3.81
5.50
BUL 140U H FRAME
3 AND 4 POLE
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19
Bulletin 140U
Molded Case Circuit Breakers
Time-Current Curves, Cont.
Bul.140U/UE
Time-Current Curves for Bulletin 140U-J Thermal-Magnetic Molded Case Circuit Breakers
Allen-Bradley 63…250 A
40752-620 (1)
SC-XXX
Effective March 2004
28
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Bulletin 140U
Molded Case Circuit Breakers
Time-Current Curves, Cont.
Bul.140U/UE
Time-Current Curves for Bulletin 140U-J Electronic LS Molded Case Circuit Breakers
2
Long Delay Response & Short Delay with I T Response Curve
2 HOURS
Current in Multiples of (Ir)
10000
9000
8000
7000
.5
.7
1
3
4
7
5
10
20
30
6000
5000
1 HOUR
2
1.15
4000
Circuit Breaker Time/Current Curve
3000
2
Long Delay (LD) & Short Delay (SD) with I T Response (LS)
2000
In
Ir
Available Sensors (In):
A
B
C
D
E
F
G
H
50A
100A
160A
250A
1000
900
800
700
Maximum Total
Clearing Time
600
500
50 A
100 A
160
20A
20A
25A
30A
32A
40A
45A
50A
40A
45A
50A
63A
70A
80A
90A
100A
63A
80A
90A
100A
110A
125A
150A
160A
250 A
100A
125A
150A
160A
175A
200A
225A
250A
400
Notes:
300
1. Curve accuracy applies from -20°C to +55°C ambient. Temperatures above +88° C cause an over
temperature protection trip. For possible continuous ampere derating for ambient above 40°C,
consult Rockwell Automation.
200
1 MINUTE
2. Application frequency is 50/60 Hertz.
Available Long Delay Time:
2,4,7,10,12,15,20,24 sec.
Shown @ 6x Ir
2,4,7,15,24
seconds +0/-30%
100
90
80
70
60
50
4. The right portion of the curve is determined by the interrupting rating of the circuit breaker.
40
5. The left portion of the curve is shown as a multiple of the Long Delay Setting
(Long Delay Pick Up = 115% of Ir). Range is 110% - 120%.
30
.
.
6. Total clearing times shown include the response times of the trip unit, the breaker opening, and the
interruption of the current.
24
20
TIME IN SECONDS
3. There is a memory effect that can act to shorten the Long Delay. The memory effect comes into play
if a current above the circuit breaker itself. A subsequent overload will cause the circuit breaker to trip
in shorter time than normal. The amount of time delay reduction is inverse to the amount of time that
has elapsed since the previous overload. Approximately five minutes is required between overloads to
completely reset memory.
Minimum Total
Clearing Time
10
9
8
7
6
7. The Short Delay Pick Up has 9 settings/positions: 2 - 8 & 10, 14.
2
8. Short Delay I T band has a tolerance of ± 15%.
15
2
9. Breakpoint back to FLAT response occurs @ 8x Ir for upper line of the I T curve.
.
10. For high fault current levels an additional fixed instantaneous hardware override is provided at
14x (In).
7
5
4
.
11. For LD Response & SD with Flat Response curve, see:
4
12. For LD Response & SD with I T Response (this curve): 40752-621
3
2
13. For Ground Fault Delay Response curve, see:
.
3
40752-622
2
40752-623
2
2
4
1
.9
.8
.7
.6
1
.9
.8
.7
5
.6
.5
.5
7
.4
.4
14
8
Available Short Delay
Pick Up Settings
2 - 8,10, 14 x Ir 5%
(See Note 7)
.2
6
2
I T Short Delay
(See Note 8)
.1
.09
.08
.07
.2
Instantaneous
Override (See Note 10)
10
Application Determines
End of Curve
.
.06
67ms
.05
.05
.04
.04
.03
.03
See Note 9
14x
.02
.01
.1
.09
.08
.07
.06
TIME IN SECONDS
.3
.3
.02
.5
.7
1
2
3
4
5
7
10
20
30
40
50
70
100
2
3
4
Current in Multiples of (Ir)
5
7
10
20
30
40
50
70
.01
100
Current in Multiples of ( I n )
2
I T
Trip Style
40752-621 (1)
TC-01201002E
Effective September 2003
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29
Bulletin 140U
Molded Case Circuit Breakers
Time-Current Curves, Cont.
Bul.140U
40,000
50,000
20,000
30,000
5000
4000
6000
7000
8000
9000
10,000
2000
3000
500
600
700
800
900
1000
300
400
200
60
70
80
90
100
50
CURRENT IN PERCENT OF BREAKER TRIP UNIT RATING (In)
60,000
70,000
80,000
9 0 , 0 00
100,000
Time-Current Curves for Bulletin 140U-K3/K6 Thermal-Magnetic Molded Case Circuit Breakers
10,000
10,000
2 HOURS
2 HOURS
1 HOUR
Circuit Breaker Time/Current Curves
For application and coordination purposes only.
Based on 40 °C ambient, cold start. Connected with four (4) feet of
rated wire (60°C up to 125 A. 75° C above 125 A) per terminal.
Tested in open air with current in all poles. Instantaneous calibration
based on single-pole tests.
2,000
1 HOUR
5,000
5,000
3,000
3,000
2,000
Maximum Voltage
600V., AC (60 Hz)
250 V., DC
1,000
1,000
500
Breaker Rating
Rated Amperes (In)
Instantaneous Trip Amperes
100, 125, 150,
500 to 1000% of trip unit rating
175, 200, 225,
(See Figure Below)
250, 300, 350,
(Dc values are approximately 40% higher)
400
Interrupting Rating (UL/CSA)
RMS Sym Amperes
Amperes
Breaker
Type
@ 240 V., AC @ 480 V., AC @ 600 V., AC @ 250 V., DC
(250-400A)
300
(125-225A)
200
Maximum Single Pole
Trip Times at 25°C ➀
140U-K3
140U-K6
65,000
100,000
35,000
65,000
25,000
35,000
10,000
22,000
100
Maximum
50
50
30
30
20
20
7.5
7.5
10
10
10
5
5
Amps
(In)
Magnetic
Multiples Of In
7.5
Push to Trip
C Thermal
Magnetic
Trip Unit
Typical
Trip Unit
Nameplate
10
40°C
1 MINUTE
1 MINUTE
100
Minimum
300
200
➀ Single pole data at 25°C based on NEMA Procedures
(AB 4-1991) for verifying performance of molded case circuit
breakers.
(100A)
500
5
10
Cat.
No.
5
5
Individual Pole
Adjustments
3
3
1
1
.5
5X
±20%
10X
2
.5
±10%
.3
.3
.2
.2
.1
.1
.05
.05
.03
.03
.02
.02
Maximum Interrupting Time
.01
.01
.005
.005
Interrupting Rating
Determines End
of Curve
.003
.002
.002
.001
40,000
50,000
60,000
70,000
80,000
90,000
100,000
20,000
30,000
4000
5000
6000
7000
8000
9000
10,000
3000
2000
500
600
700
800
900
1000
400
300
200
60
70
80
90
1 00
50
.001
CURRENT IN PERCENT OF BREAKER TRIP UNIT RATING (In)
40752-630 (1)
SC-4118-87B
Effective October 1997
32
.003
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TIME IN SECONDS
TIME IN SECONDS
Adjustable Magnetic Trip
2
Bulletin 140U
Molded Case Circuit Breakers
Time-Current Curves, Cont.
Bul.140U
50,000
30,000
40,000
20,000
5000
60 00
7 000
8000
9000
10,000
3000
4000
2000
600
700
800
900
1000
500
30 0
400
200
60
50
70
80
90
100
CURRENT IN PERCENT OF BREAKER TRIP UNIT RATING (In)
60,000
70,000
80,000
90,000
100,000
Time-Current Curves for Bulletin 140U-K0 Thermal-Magnetic Molded Case Circuit Breakers
10,000
10,000
2 HOURS
2 HOURS
1 HOUR
5,000
Circuit Breaker Time/Current Curves
For application and coordination purposes only.
Based on 40 °C ambient, cold start. Connected with four (4) feet of
rated wire (60°C up to 125 A. 75° C above 125 amps) per terminal.
Tested in open air with current in all poles. Instantaneous calibration
based on single-pole tests.
3,000
2,000
1 HOUR
5,000
3,000
2,000
Maximum Voltage
600V., AC (60 Hz)
250 V., DC
1,000
Breaker Rating
Rated Amperes (In)
500
100, 125, 150,
175, 200, 225,
250, 300, 350,
400
(250-400A)
300
500
Interrupting Rating (UL/CSA)
RMS Sym Amperes
Breaker
Type
@ 240 V., AC @ 480 V., AC
(125-225A) Maximum Single Pole
Trip Times at 25°C ➀
200
1,000
Instantaneous Trip Amperes
500 to 1000% of trip unit rating
(See Figure Below)
(DC values are approximately 40% higher)
200,000
140U-K0
100,000
Amperes
@ 600 V., AC
@ 250 V., DC
50,000
22,000
➀ Single pole test data at 25°C based on NEMA Procedures
(AB 4-1991) for verifying performance of molded case circuit
breakers.
300
200
(100A)
100
Minimum
Maximum
50
50
30
30
20
20
7.5
7.5
10
10
10
5
5
Amps
(In)
Magnetic
Multiples Of In
7.5
Push to Trip
C Thermal
Magnetic
Trip Unit
Typical
Trip Unit
Nameplate
10
40°C
1 MINUTE
1 MINUTE
100
5
10
Cat.
No.
5
5
Individual Pole
Adjustments
3
3
1
1
.5
5X
±20%
10X
2
TIME IN SECONDS
TIME IN SECONDS
Adjustable Magnetic Trip
2
.5
±10%
.3
.3
.2
.2
.1
.1
.05
.05
.03
.03
.02
.02
Maximum Interrupting Time
600 V., Ac
.01
.01
480 V., Ac
.005
.005
240 V., Ac
.003
.003
Interrupting Rating
Determines End
of Curve
.002
.002
.001
60,000
70,000
80,000
90,000
100,000
50,000
40,000
30,000
20,000
5000
6000
7000
8000
9000
10,000
4000
2000
3000
600
700
800
900
1000
500
400
200
300
60
70
80
90
100
50
.001
CURRENT IN PERCENT OF BREAKER TRIP UNIT RATING (In)
40752-631 (1)
SC-4119-87B
Effective October 1997
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33
Bulletin 140U
Molded Case Circuit Breakers
Time-Current Curves, Cont.
Bul.140U
Time-Current Curves for Bulletin 140U-K Electronic LSI, LSIG Trip Units and 140U-K0 Molded Case Circuit Breakers
.5
CURRENT IN MULTIPLES OF RATING PLUG AMPERES (In)
.7
.9 1
5
6 7 8 9 10
20
2 HOURS
10,000
Circuit Breaker Time/Current Curves (Phase Current)
1 HOUR
5,000
➃
Technical Data Covers, Cat. Nos. 140U-KTL3, -KTI3 Electronic Trip Units for use with
Circuit Breaker Cat. No 140U-K0, 400A. max.
3,000
Adjustable Short Delay Time
Typical Trip Unit Nameplate
Rating Plug
2,000
Short Delay
Cat.
Standard Fixed
Rating Plug
Pickup • xIr
Push to Trip
In
4
Engaged
5
2
1,000
6
3
7
8
Time • ms
200
100
INST
300
TEST
Trip Unit
40oC
Remove
Available Rating Plugs
500
300
200
Long Delay➀
Maximum Total
Clearing Time
1 MINUTE
Catalog
Number
Short Delay
Pickup Range
Amperes
Fixed
Fixed
Fixed
Fixed
Fixed
Fixed
140U-KRP3-D40
140U-KRP3-D35
140U-KRP3-D30
140U-KRP3-D25
140U-KRP3-D22
140U-KRP3-D20
800-3200
700-2800
600-2400
500-2000
450-1800
400-1600
50
30
Hz
UL/CSA
240V
480V
200
600V
100
50
IEC 947-2
Breaker
Type
240V
140U-K0
200
380V
415V
100
100
Notes
electronic trip units are suitable for functional field testing with test kit.
For field testing using primary injection methods, follow NEMA publication AB-4-1991.
2X
20
There is a memory effect that can act to shorten the long delay. The memory effect
comes into play if a current above the long delay pick up value exists for a time and then
is cleared by the tripping of a down stream device or the circuit breaker itself. A
subsequent overload will cause the circuit breaker to trip in shorter time than normal.
The amount of time delay reduction is inverse to the amount of time that has elapsed
since the previous overload. Approximately five minutes is required between overloads
to completely reset the memory.
4X
10
Short Delay
Pick Up
Settings
(Tolerance
±10%)
6X
5
3
➀ Curve accuracy applies from –20°C to +55° C ambient. For possible continuous
ampere derating for ambient above 40°C, consult Rockwell Automation.
➁ For high fault current levels a fixed instantaneous override is provided at 4000A.
(Tolerance ±15%).
2
8X
➂ The end of the curve is determined by the interrupting rating of the circuit breaker.
See above tabulation.
➃ For ground fault time/current curve see 40752-636.
7X
TIME IN SECONDS
Type
400
350
300
250
225
200
Interrupting Ratings – 50/60
RMS Sym. Amperes (kA)
Breaker
Type
140U-K0
Long Delay➀
Minimum Total
Clearing Time
100
Ampere
Rating (In)
1
1
5X
3X
.5
300 ms
.3
200 ms
.2
100 ms
.1
.1
I
.05
.05
Fixed Instantaneous
Override ➁
.04
.03
.02
.02
SECONDS
.03
.01
Interrupting
Rating
Determines
End of
Curve ➂
Maximum
Interrupting
Time
600 VAC
.01
480 VAC
240 VAC
.005
.003
.002
200,000
100,000
30,000
40,000
50,000
.001
20
20,000
6 7 8 9 10
10,000
5
5000
2
CURRENT IN MULTIPLES OF RATING PLUG AMPERES (In)
4000
.6 .7 .8 .9 1
3000
.5
2000
.001
CURRENT IN AMPS
40752-635 (1)
SC-5645-93
Effective October 1997
Visit our website: www.ab.com/catalogs
37
Bulletin 140U
Molded Case Circuit Breakers
Time-Current Curves, Cont.
Bul.140U
Time-Current Curves for Bulletin 140U-M Electronic LS, LSG Trip Units
and 140U-M5, -M6 Molded Case Circuit Breakers
.5
CURRENT IN MULTIPLES OF RATING PLUG AMPERES (In)
.7 .9 1
..86
2 6 7 8 9 10
3
4
5
20
1 HO U R
2 HO U R S
10,000
Circuit Breaker Time/Current Curves (Phase Current) ➃
5,000
Technical Data Covers, Cat. Nos. 140U-MTL3, -MTG3 Electronic Trip Unit
for use with Circuit Breaker Types 140U-M5, -M6, 800 A max.
3,000
Fixed Short Delay Time
2,000
Standard Fixed
Rating Plug
Rating Plug
Typical Trip Unit Nameplate
Push to Trip
In
4
1,000
Test
Short Delay
Pickup x I n
Cat.
Engaged
2
5
6
3
7
Trip Unit
40o C Ambient
8
Remove
500
300
200
Long Delay➀
Maximum Total
Clearing Time
Available Rating Plugs
Ampere
Rating (I n )
Type
800
700
600
500
450
400
Fixed
Fixed
Fixed
Fixed
Fixed
Fixed
Rating Plug
Catalog
Number
140U-MRP3-D80
140U-MRP3-D70
140U-MRP3-D60
140U-MRP3-D50
140U-MRP3-D45
140U-MRP3-D40
Short Delay
Pickup Range
Amperes
1600-6400
1400-5600
1200-4800
1000-4000
900-3600
800-3200
Interrupting Rating
1 MIN U T E
100
Long Delay➀
Minimum Total
Clearing Time
UL/CSA
RMS Sym. kA, 50/60 Hz
Breaker
Type
240V
65
100
140U-M5
140U-M6
50
Breaker
Type
3X
2X
65
100
50
70
e)
50
50
Icu
690V (U e)
Ics
20
25
10
13
Notes
Electronic trip units are suitable for functional field testing with test kit.
For field testing using primary injection methods, follow NEMA AB4-1991 publications.
Calibration response in short delay pick-up range is same for 1, 2 or 3 poles in series.
4X
Short Delay
Pick Up
Settings
(Tolerance
±10%)
➀ Curve accuracy applies from –20 °C to +55°C ambient. For possible continuous ampere
derating for ambient above 40 °C, consult Rockwell Automation.
8X
5X
There is a memory effect that can act to shorten the long delay. The memory effect comes
into play if a current above the long delay pick-up value exists for a time and then is cleared
by the tripping of a downstream device or the circuit breaker itself. A subsequent overload
will cause the circuit breaker to trip in shorter time than normal. The amount of time delay
reduction is inverse to the amount of time that has elapsed since the previous overload.
Approximately five minutes is required between overloads to completely reset the memory.
➁ For high fault current levels a fixed instantaneous override is provided at 5500A.
(Tolerance ±15%).
1
6X
TIME IN SECONDS
25
35
Utilization Category A
U imp = 8kV
3
2
65
100
140U-M5
140U-M6
10
5
600V
50
65
IEC 947-2
RMS Sym. kA, 50/60 Hz
380/415V (U
240V (U e)
Ics
Icu
Ics
Icu
30
20
480V
➂ The end of the curve is determined by the interrupting rating of the circuit breaker.
See above tabulation.
➃ For ground fault time/current curves see 40752-678.
.3
7X
.5
.2
.1
.1
.05
.05
Fixed Instantaneous
Override ➁
.04
.03
.02
.02
SECONDS
.03
.01
Interrupting
Rating
Determines
End of
Curve ➂
.01
.005
.003
.002
CURRENT IN AMPS
40752-676 (1)
SC-7204-99
Effective February 1999
44
Visit our website: www.ab.com/catalogs
100,000
50,000
30,000
40,000
20,000
10,000
5000
4000
3000
.001
2000
20
1000
.001
2
3 6 7 8 9 10
4
5
.5 .6 .7 .8 .9 1
CURRENT IN MULTIPLES OF RATING PLUG AMPERES (In)
Bulletin 140U
Molded Case Circuit Breakers
Time-Current Curves, Cont.
Bul.140U
Time-Current Curves for Bulletin 140U-M Electronic LSI, LSIG Trip Units
and 140U-M5, -M6 Molded Case Circuit Breakers
.5
.7
CURRENT IN MULTIPLES OF RATING PLUG AMPERES (In)
.9 .1.86
2 6 7 8 9 10
3
4
5
20
2 HO U R S
10,000
➃
Circuit Breaker Time/Current Curves (Phase Current)
1 HO U R
5,000
Technical Data Covers, Cat. nos. 140U-MTH3, -MTI3 Electronic Trip Units for use with
Circuit Breaker Types 140U-M5, -M6, 800 A max.
3,000
Adjustable Short Delay Time
2,000
Rating Plug
Standard Fixed
Rating Plug
Push to Trip
In
Typical Trip Unit Nameplate
Short Delay
Pickup x In
5
4
6
3
7
Cat.
Engaged
2
Test
Time
MIsec
200
100
I
8
300
Trip Unit
40oC Ambient
Remove
1,000
Available Rating Plugs
Ampere
Rating (In)
Type
800
700
600
500
450
400
Fixed
Fixed
Fixed
Fixed
Fixed
Fixed
Rating Plug
Catalog
Number
140U-MRP3-D80
140U-MRP3-D70
140U-MRP3-D60
140U-MRP3-D50
140U-MRP3-D45
140U-MRP3-D40
500
300
200
Long Delay➀
Maximum Total
Clearing Time
1 MIN U T E
Interrupting Rating
UL/CSA
RMS Sym. kA, 50/60 Hz
Breaker
Type
Long Delay➀
Minimum Total
Clearing Time
100
Short Delay
Pickup Range
Amperes
1600-6400
1400-5600
1200-4800
1000-4000
900-3600
800-3200
140U-M5
140U-M6
Breaker
Type
50
240V
480V
600V
65
100
50
65
25
35
IEC 947-2
RMS Sym. kA, 50/60 Hz
240V (Ue)
Icu
Ics
30
65
100
140U-M5
140U-M6
380/415V (U e )
Icu
Ics
65
100
50
70
50
50
690V (U e)
Icu
Ics
20
25
10
13
Utilization Category A
U imp = 8kV
2X
20
Notes
Electronic trip units are suitable for functional field testing with test kit.
For field testing using primary injection methods, follow NEMA AB4-1991 publications.
10
4X
Calibration response in short delay pickup range is same for 1, 2 or 3 poles in series.
6X
5
3
There is a memory effect that can act to shorten the long delay. The memory effect comes
into play if a current above the long delay pickup value exists for a time and then is cleared
by the tripping of a downstream device or the circuit breaker itself. A subsequent overload
will cause the circuit breaker to trip in shorter time than normal. The amount of time delay
reduction is inverse to the amount of time that has elapsed since the previous overload.
Approximately five minutes is required between overloads to completely reset the memory.
Short Delay
Pickup
Settings
(Tolerance
? 10%)
➀ Curve accuracy applies from –20 °C to +55 °C ambient. For possible continuous ampere
derating for ambient above 40 °C, consult Rockwell Automation.
➁ For high fault current levels a fixed instantaneous override is provided at 5500A.
(Tolerance ±15%).
➂ The end of the curve is determined by the interrupting rating of the circuit breaker.
See above tabulation.
7X
TIME IN SECONDS
8X
2
1
➃ For ground fault time/current curves see 40752-678.
5X
3X
.5
300 ms
.3
200 ms
.2
100 ms
.1
.1
I
.05
.05
Fixed Instantaneous
Override ➁
.04
.03
.02
.02
SECONDS
.03
.01
Interrupting
Rating
Determines
End of
Curve ➂
.01
.005
.003
.002
100,000
50,000
30,000
40,000
20,000
10,000
5000
4000
20
3000
2
3 6 7 8 9 10
4
5
.6 .7 .8 .9 1
CURRENT IN MULTIPLES OF RATING PLUG AMPERES (In)
2000
.001
.5
1000
.001
CURRENT IN AMPS
40752-677 (1)
SC-6913-98
Effective February 1999
Visit our website: www.ab.com/catalogs
45
Bulletin 140U
Molded Case Circuit Breakers
Time-Current Curves, Cont.
Bul.140U
Time-Current Curves for Bulletin 140U-M Electronic Trip Units with Ground Fault Protection
16000
640
960
8 00
480
1 60
320
GROUND CURRENT-AMPERES
1120
12 80
1440
1600
Ground Fault Protection
2 HOURS
10,000
1 HOUR
5,000
Circuit Breaker Time/Current Curves (Ground Current)
➀
Technical Data Covers, Electronic Trip Units for use with
Circuit Breaker Types 140U-M5, -M6, 800 A max.
3,000
Typical Trip Unit Nameplate
Fixed Short Delay Time
Rating Plug
2,000
Cat.
Push to Trip
In
Engaged
Short Delay
Pickup x In
5
4
6
3
7
2
Ground Fault
Pickup x Ig
Time
MIsec
4
500
3
2
1
8
300
150
I
Ig = 160A
5
Test
Trip Unit
40 o C Ambient
Remove
1,000
Typical Trip Unit Nameplate
Adjustable Short Delay Time
Rating Plug
Cat.
500
Short Delay
Pickup x In
Push to Trip
In
4
Engaged
2
5
6
3
7
8
Time
MIsec
200
100
I
300
Ground Fault
Pickup x Ig
Time
MIsec
4
500
3
2
1
300
150
I
Ig = 160A
5
Test
Trip Unit
40 oC Ambient
Remove
Notes
Curve accuracy applies from –20 °C to +55 °C ambient. For possible continuous ampere
derating for ambient above 40 °C, consult Rockwell Automation.
300
200
Electronic trip units are suitable for functional field testing with test kit.
For field testing using primary injection methods, follow NEMA publication (AB4-1991).
➀ For phase time/current curves see:
40752-674
40752-675
40752-676
40752-677
1 MINUTE
100
50
30
1xIG
20
3xIG
4xIG
10
5
3
Ground Fault Pickup
Settings
(Tolerance ± 10%
Except ± 20% on
1xIG Setting)
2xIG
TIME IN SECONDS
5xIG
2
1
500 ms
.5
300 ms
.3
.2
150 ms
.1
I
.05
.03
.02
.01
.005
.003
.002
.001
40752-678 (1)
SC-6914-98
Effective February 1999
46
1
2
3
4
5
6
7 8 910
GROUND CURRENT-IN MULTIPLES OF Ig = 160A
100
Visit our website: www.ab.com/catalogs
Bulletin 140U
Molded Case Circuit Breakers
Time-Current Curves, Cont.
Bul.140U
Time-Current Curves for Bulletin 140U-N Electronic LS Trip Units
CURRENT IN MULTIPLES OF RATING PLUG AMPERES (In)
.5 .6 .7 .8 .9 1
2
3
4 5 6 7 8 9 10
20
1 HO U R
2 HO U R S
10,000
Circuit Breaker
Time/Current Curves (Phase Current)
Electronic Trip Units are AC only devices that employ microprocessor
based technology that provides true RMS current sensing means for proper correlation
with thermal characteristics of conductors and equipment. They are used with Circuit
Breaker Types 140U-N5, -N6, and -N0.
5,000
3,000
I2t Ramp Short Time Delay
2,000
Typical Trip Unit Nameplate
Rating Plug
Standard Fixed
Rating Plug
Push
to
Trip
Short Delay
Pickup
x In 5
4
6
Cat.–
/n–
“Y”
3
Engaged
500
300
200
1 MIN U T E
100
A vailable Rating Plugs
Ampere
Rating (I n)
Type
Catalog
Number
Short Delay
Pickup Range
Amperes
1200
1200
1000
800
700
600
600, 800, 1000, 1200
Fixed
Fixed
Fixed
Fixed
Fixed
Adj.
140U-NRP3-E12
140U-NRP3-E10
140U-NRP3-D80
140U-NRP3-D70
140U-NRP3-D60
140U-NRPA-E12
2400-9600
2000-8000
1600-6400
1400-5600
1200-4800
1200-9600
Interrupting Ratings – 50/60 Hz
RMS Sym. Amperes (kA)
UL/CSA
Breaker
Type
240V
480V
65
50
ND, CND
100
65
HND, CHND
200
100
NDC, CNDC
50
Trip Unit
40° C Ambient
8
Remov e
Frame
Rating
Amperes
(Max.)
Long Delay➀
Maximum Total
Clearing Time
Long Delay➀
Minimum Total
Clearing Time
TEST
7
2
1,000
IEC 947-2
220-240V
65
100
200
600V
25
35
50
30
380-415V
50
65
100
ICS = .25 ICU
ICW = 15 kA @ .5S
U imp = 8kV
3X
2X
20
Notes
Curve accuracy applies from -20 °C to +55°
ambient above 40 °C, consult Rockwell Automation
10
Electronic trip units are suitable for functional field testing with test kit. For
field testing using primary injection methods, follow NEMA publication AB-4-1991.
For ground fault time-current curves see 40752-692.
Short Delay
Pick Up
Settings
(Tolerance
± 10%)
4X
5
3
8X
5X
➁ For high fault current levels a fixed instantaneous override is provided at14000A (Tolerance
±15%).
➂ The end of the curve is determined by the interrupting rating of the circuit breaker. See above
tabulation.
➃ Not UL/CSA Listed.
1
6X
TIME IN SECONDS
2
➀ There is a memory effect that can act to shorten the long delay. The memory effect comes into
play if a current above the long delay pickup value exists for a time and then is cleared by the
tripping of a downstream device or the circuit breaker itself. A subsequent overloads will cause
the circuit breaker to trip in shorter time than normal. The amount of time delay reduction is
inverse to the amount of time that has elapsed since the previous overload. Approximately five
minutes is required between overloads to completely reset the memory
.3
7X
.5
.2
.05
.05
.03
.03
.02
.02
.001
CURRENT IN AMPS
50,000
20
60,000
70,000
80,000
90,000
100,000
.002
40,000
.003
.002
30,000
.005
.003
20,000
.005
.001
2
3
4 5 6 7 8 9 10
.5 .6 .7 .8 .9 1
CURRENT IN MULTIPLES OF RATING PLUG AMPERES (In)
Interrupting
Rating
Determines
End of Curve➂
.01
10,000
.01
Fixed Instantaneous
Overide➁
200,000
.1
SECONDS
.1
40752-690 (1)
SC-5375-92A
Effective October 1997
Visit our website: www.ab.com/catalogs
47
Bulletin 140U
Molded Case Circuit Breakers
Time-Current Curves, Cont.
Bul.140U
Time-Current Curves for Bulletin 140U-N LSI Electronic Trip Unit
CURRENT IN MULTIPLES OF RATING PLUG AMPERES (In)
.5 .6 .7 .8 .9 1
2
3
4 5 6 7 8 9 10
20
1 HO U R
2 HO U R S
10,000
Circuit Breaker
Time/Current Curves (Phase Current)
Electronic Trip Units are AC only devices that employ microprocessor-based
technology that provides true RMS current sensing means for proper correlation
with thermal characteristics of conductors and equipment. For use with Circuit
Breaker Types 140U-N5, -N6, and -N0.
5,000
3,000
Adjustable Short Time Delay
Typical Trip Unit Nameplate
Rating Plug
2,000
Push
to
Trip
Standard Fixed
Rating Plug
Short Delay
Pickup
x In 5
4
6
Cat.–
/n–
“Y”
3
TEST
7
2
Engaged
Trip Unit
40°C Ambient
8
Remov e
1,000
500
Frame
Rating
Amperes
(Max.)
A vailable Rating Plugs
Ampere
Type
Rating (I n)
Catalog
Number
Short Delay
Pickup Range
Amperes
1200
1200
1000
800
700
600
600, 800, 1000, 1200
140U-NRP3-E12
140U-NRP3-E10
140U-NRP3-D80
140U-NRP3-D70
140U-NRP3-D60
140U-NRPA-E12
2400-9600
2000-8000
1600-6400
1400-5600
1200-4800
1200-9600
300
200
1 MIN U T E
100
Long Delay➀
Maximum Total
Clearing Time
Interrupting Ratings – 50/60 Hz
RMS Sym. Amperes (kA)
UL/CSA
Breaker
Type
240V
480V
65
50
140U-N5
100
65
140U-N6
200
100
140U-N0
Long Delay➀
Minimum Total
Clearing Time
Fixed
Fixed
Fixed
Fixed
Fixed
Adj.
IEC 947-2
220-240V
65
100
200
600V
25
35
50
380-415V
50
65
100
ICS = .25 ICU
ICW = 15 kA @ .5S
U imp = 8kV
50
Notes
30
Curve accuracy applies from -20 °C to +55° C ambient. For possible ampere derating for
ambient above 40 °C, consult Rockwell Automation
20
Electronic trip units are suitable for functional field testing with test kit. For
field testing using primary injection methods, follow NEMA publication AB-4-1991.
2X
For ground fault time-current curves see 40752-692.
➀ There is a memory effect that can act to shorten the long delay. The memory effect comes into
play if a current above the long delay pickup value exists for a time and then is cleared by the
tripping of a downstream device or the circuit breaker itself. A subsequent overloads will cause
the circuit breaker to trip in shorter time than normal. The amount of time delay reduction is
inverse to the amount of time that has elapsed since the previous overload. Approximately five
minutes is required between overloads to completely reset the memory
4X
10
Short Delay
Pick Up
Settings
(Tolerance
±10%)
6X
5
3
➁ For high fault current levels a fixed instantaneous override is provided at14000A (Tolerance
±15%).
➂ The end of the curve is determined by the interrupting rating of the circuit breaker. See above
tabulation.
➃ Not UL/CSA Listed.
7X
TIME IN SECONDS
8X
2
1
5X
3X
.5
300 MS
.3
200 MS
.2
100MS
.1
.1
I
.03
.03
.02
.02
20
.001
CURRENT IN AMPS
40752-691 (1)
SC-5376-92A
Effective October 1997
48
Visit our website: www.ab.com/catalogs
60,000
70,000
80,000
90,000
100,000
.002
40,000
.003
.002
50,000
.003
20,000
.005
30,000
.01
.005
.001
2
3
4 5 6 7 8 9 10
.5 .6 .7 .8 .9 1
CURRENT IN MULTIPLES OF RATING PLUG AMPERES (In)
Interrupting
Rating
Determines
End of Curve➂
10,000
.01
Fixed Instantaneous
Overide➁
200,000
.05
SECONDS
.05
Bulletin 140U
Molded Case Circuit Breakers
Time-Current Curves, Cont.
Bul.140U
Time-Current Curves for Bulletin 140U-N Electronic LSG, LSIG Trip Units with Ground Fault Protection
1 HO U R
4000
5000
3000
2000
400
600
700
800
900
1000
500
300
200
2 HO U R S
.50
.60
.70
.80
.90
100
CURRENT IN AMPERES
10,000
C i rcui t B reak er Ti m e/C urrent C urv es (G round C urrent)
Electronic Trip Units are AC only devices that employ microprocessor-based
technology that provides true RMS current sensing means for proper correlation
with thermal characteristics of conductors and equipment. They are used with Circuit
Breaker Types 140U-N5, -N6, and N0.
5,000
3,000
Typical Trip Unit Nameplate
2,000
Rating Plug
Push
to
Trip
Cat.–
/n–
“ Y”
1,000
S hort D elay
Pick up
x In 5
4
6
G round Fault
Pickup
x IG 4
3
5
3
2
2
Engaged
7
8
Remov e
6
1
IG =200A
Time
500
TEST
300
150
Trip U nit
40°C A mbient
1
Millisec
500
N otes
Curve accuracy applies from –20 °C to + 55°C ambient.
Electronic trip units are suitable for functional field testing with test kit.
For field testing using primary injection methods, follow NEMA publication AB-4-1991.
For phase time-current curves see 40752-690, and -691.
300
200
1 MIN U T E
100
50
30
200 A .
600 A .
10
1000 A .
20
5
G round Fault Pick U p S ettings
(Tolerance±1 0% E xcept
±20% on 200 A . S etting)
800 A .
400 A .
2
1200 A .
3
TIME IN SECONDS
1
.5 S E C
.5
.3 S E C
.3
.2
.15 S E C
.1
I
.05
.03
.02
.01
.005
.003
.002
5000
4000
3000
2000
500
600
700
800
900
1000
400
200
300
.50
.60
.70
.80
.90
100
.001
CURRENT IN AMPERES
40752-692 (1)
SC-5377-92A
Effective October 1997
Visit our website: www.ab.com/catalogs
49