Time Current Curves TC01200002E Effective March 2018 Supersedes May 2017 Contents Description Page Catalog Number Selection 5 Digitrip 310+ Electronic Trip Unit Types FDE, HFDE, FDCE Long Delay (LD) and Short Delay (SD) with Flat Response and Override (225A) (LSI, LSIG) TC01203015E 6 Long Delay Response and Short Delay with I 2 t Response Curve and Override (225A) (LS, LSG) TC01203016E 7 Ground Fault Response Curve (LSG, LSIG) TC01203017E 8 Digitrip 210+ Electronic Trip Unit Types FDE, HFDE, FDCE Long Delay (LD) and Short Delay (SD) with Flat Response and Override (100A, 225A) (LSI) (Profiles J, K, R, S) TC012001EN 9 (100A, 225A) (LSI) (Profiles M, N) TC012002EN 10 (100A, 225A) (LSI) (Profiles P, Q) TC012003EN 11 Long Delay (LD) and Short Delay (SD) with I 2 t Response Curve and Override (100A, 225A) (LSI) (Profiles L, O) TC012004EN 12 Long Delay (LD), Instantaneous, and Override (100A, 150A) (LI) TC012005EN 13 (225A) (LI) TC012006EN 14 Single-pole thermal-magnetic trip units Series C types EHD, FD, and HFD 15A SC-4423-88A 15 Series C types EHD, FD, and HFD 20A SC-4424-88A 16 Series C types EHD, FD, and HFD 25A SC-4425-88A 17 Series C types EHD, FD, and HFD 30A SC-4426-88A 18 Series C types EHD, FD, and HFD 35A SC-4427-88A 19 Series C types EHD, FD, and HFD 40A SC-4428-88A 20 Series C types EHD, FD, and HFD 45A SC-4429-88A 21 Series C types EHD, FD, and HFD 50A SC-4430-88A 22 Series C types EHD, FD, and HFD 60A SC-4431-88A 23 Series C types EHD, FD, and HFD 70A SC-4432-88A 24 Series C types EHD, FD, and HFD 80A SC-4433-88A 25 Series C types EHD, FD, and HFD 90A SC-4434-88A 26 Series C types EHD, FD, and HFD 100A SC-4435-88A 27 Series C types FD and HFD 110A SC-4436-88A 28 Series C types FD and HFD 125A SC-4437-88A 29 Series C types FD and HFD 150A SC-4438-88A 30 Series C F-frame circuit breaker time current curves
Transcript
Time Current Curves TC01200002EEffective March 2018Supersedes May 2017
Note:Time/current characteristic curves for Series C® F-frame circuit breakers—voltages shown in curve headings are maximum at which the breaker may be applied . Interrupting capacity of individual breaker is tabulated on each curve .
Time Current Curves are engineering reference documents for application and coordination purposes only. For field testing molded case circuit breakers, refer to NEMA AB 4 guidelines.
2 EATON www.eaton.com
3EATON www.eaton.com
Time Current Curves TC01200002EEffective March 2018
Series CF-Frame
Revision notes
ote:N Unless noted below, all curves remain unchanged from their prior revision .
Revision Curve number Page DateChanged FDCE, 600V interruption rating from 35 to 25 TC01203015 6 05-24-17
Added 7 new curves, combining FDC data with all other frame data. New curve #’s are: TC012029EN, TC012030EN, TC012031EN, TC012032EN, TC012033EN, TC012034EN, TC012035EN.
See revision note. 43-49 (new page #’s)
05-24-17
Added 3 new curves, demonstrating let-through current at 240V, 480V and 600V. AD-29-166A AD-29-166B AD-29-166C
62-64 (new page #’s)
05-24-17
Corrected maximum single pole trip time curves 110A, 125A. TC012030EN TC012031EN
Added 12 new curves, combining FDC data with all other frame data. New curve #’s are: TC012036EN , TC012037EN, TC012038EN, TC012039EN, TC012040EN, TC012041EN, TC012042EN, TC012043EN, TC012044EN, TC012045EN, TC012046EN, TC012047EN.
See revision note. 31-42 04-01-18
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Time Current Curves TC01200002EEffective March 2018
SuffixE = 100% protected (four-pole only) neutral poleEH = 50% protected (four-pole only)K = High magnetic molded case switchL = Line and load terminalsS = Stainless steel terminalsV = 50 °C calibrationW = Without terminalsY = Line terminals onlyZ = Aluminum terminals (≤100 amperes)
Circuit Breaker Type
EDBEDSEDEDHEDC
Number of Poles
2 = 2 poles3 = 3 poles
Trip Amperes
100125150175200225
SuffixL = Line and load terminalsW = Without terminalsY = Line terminals onlyZ = Aluminum terminals (100 amperes)
FDC 3 100 L
EDC 3 200 L
Blank = Load side terminals only
Blank = Load side terminals only
Table3. F-Frame Circuit Breakers with Thermal-Magnetic Trip Unit Technology
Performance @ 480 Vac
FDEHFDE
Number of Poles
3 = 3 poles
SuffixWL
= Without Terminals= Line and Load Terminals
Blank = Load Side Terminals OnlyTrip Unit
21 = LI22 = LSI
Amperes
100 150225
HFDE 3 21 L100
= 35 kAIC = 65 kAIC
Table 2. F-Frame Circuit Breakers with 210+ Electronic Trip Unit Technology
Circuit Breaker Type
FDEHFDEFDCE
Number of Poles
3 = 3 poles
Suffix
ZG = Zone selectiveinterlocking
Blank = No option
Trip Unit33 = LS32 = LSI35 = LSG36 = LSIG
SuffixW = Without terminalsL = Line and load terminalsBlank = Load side terminals only
Trip Amperes
80160225
FDE 3 225 32 W
= 35 kAIC = 65 kAIC = 100 kAIC
Table 1. F-Frame Circuit Breakers with 310+ Electronic Trip Unit Technology
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 .
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Time Current Curves TC01200002EEffective March 2018
Series CF-Frame
EATON www.eaton.com
Figure 2. Digitrip 210+ Nameplates
Figure 1. Digitrip 310+ Nameplates
LI LSI
LS LSG LSIGLSI
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Time Current Curves TC01200002EEffective March 2018
1. Curve accuracy applies from –20C to +55C ambient. Temperatures above +85C cause an over-temperature protection trip. For possible continuous ampere dertaing for ambient above 40C, refer to Eaton.
2. Application frequency is 50/60 Hz.
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 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 tripin 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 tocompletely reset memory.
4. The right portion of the curve is determined by the interrupting rating of the circuit breaker.
The left portion of the curve is shown as a multiple of the long delay setting.(long delay pick up = 115% of I ). Range is 110%–120%.
6. Total clearing times shown include the response times of the trip unit, the breaker opening, and the interruption of the current.
7. The short delay pick up has nine settings/positions, 2–8, 10, 12.
8. For high fault current levels an additional fixed instantaneous hardware override is provided (corresponding to SDPU position 9) at 12x (I ) and designated as 12I . Instantaneous tolerance is +/–20%.
9. For LD response and SD with flat response (this curve): TC01203015E
10. For LD response and SD with I T response curve, see: TC01203016E
11. For ground fault delay response curve, see: TC01203017E
12. Digitrip RMS 310+ trip units are suitable for functional field testing with test kit Cat. No. MTST120V. For field testing using primary injection methods, follow NEMA publication AB 4-2003.
2
n
n
Maximum totalclearing time
Minimum totalclearing time
I 80A 160A 225AI
ABCDEFGH
15A20A30A40A50A60A70A80A
60A70A80A90A
100A125A150A160A
100A110A125A150A160A175A200A225A
i
Breakertype
Symmetrical RMS amperes (kA) UL/CSA
FDEHFDEFDCE
240 V
Interrupting ratings—50/60 Hz
65100200
480 V
3565100
600 V
182535
r n
TIM
E IN
SE
CO
ND
S
TIM
E IN
SE
CO
ND
S1
MIN
UT
E1
HO
UR
2 H
OU
RS
Current in Multiples of (lr)
Current in Multiples of (lr) Current in Multiples of (lr)
2
8
10
4
63
7
5
sec.
0.001
0.01
0.1
1
1000 10000 100000
Current in Amps
Interrupting Rating Determines End of Curve
Fixed Instantaneous Override
600V
480V
240V
Figure 3. Types FDE, HFDE, and FDCE 225A—Long/Short Delay—Curve Number TC01203015E
Notes:1 . Curve accuracy applies from –20C to +55C ambient . Temperatures above +85C cause an overtemperature protection trip . For possible continuous ampere derating for ambient above 40C, refer to Eaton .
2 . Application frequency is 50/60 Hz .
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 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 memory .
4 . The right portion of the curve is determined by the interrupting rating of the circuit breaker .
5 . The left portion of the curve is shown as a multiple of the long delay setting . (long delay pick up = 115% of In ) . Range is 110%–120% .
6 . Total clearing times shown include the response times of the trip unit, the breaker opening, and the interruption of the current .
7 . The short delay pick up has nine settings/positions, 2–8, 10, 12 .
8 . For high fault current levels an additional fixed instantaneous hardware override is provided (corresponding to SDPU position 9) at 12x (In) and designated as 12Ii . Instantaneous tolerance is +/–20% .
9 . For LD response and SD with flat response (this curve): TC01203015E .
10 . For LD response and SD with I2T response curve, see: TC01203016E .
12 . Digitrip RMS 310+ trip units are suitable for functional field testing with test kit Cat . No . MTS120V . For field testing using primary injection methods, follow NEMA publication AB-4-2003 .
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Time Current Curves TC01200002EEffective March 2018
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.01
1
2
3
4
5
6789
10
20
30
40
50
60
708090
100
1000900800700
600
500
400
300
200
2000
3000
4000
5000
6000
700080009000
10000
.02
.03
.04
.05
.06
.07
.08.09
.1
.2
.3
.4
.5
.6.7.8.91
3
4
5
6789
10
20
30
40
50
60
708090
100
1000900800700
600
500
400
300
200
2000
3000
4000
5000
6000
700080009000
10000
.01
.02
.03
.04
.05
.06
.07
.08
.09
.1
.2
.3
.4
.5
.6
.7
.8
.91
Maximum totalclearing time
Available long delay time:2,4,7,10,12,15,20,24 sec.
1. Curve accuracy applies from –20C to +55C ambient. Temperatures above +85C cause an over-temperature protection trip. For possible continuous ampere derating for ambient above 40C, referto Eaton.
2. Application frequency is 50/60 Hz.
4. The right portion of the curve is determined by the interrupting rating of the circuit breaker.
5. The left portion of the curve is shown as a multiple of the long delay setting(Long delay pick up = 115% of ). Range is110%–120%.
7. The short delay pick up has nine settings/positions: 2–8, 10, 12.
9. Breakpoint back to FLAT response occurs @ 8x for upper line of the I T curve.
(corresponding to SDPU position nine) at 12x and designated as 12 . Instantaneous tolerance is+/–20%.
12. For LD response and SD with I T response (this curve):
13. For ground fault delay response curve, see: TC01203017E
6. Total clearing times shown include the response times of the trip unit, the breaker opening, and theinterruption of the current.
28. Short delay I T band has a tolerance of +/–15%.
Breakertype
Symmetrical RMS amperes (kA) UL/CSA
FDEHFDEFDCE
240 V
Interrupting ratings—50/60 Hz
65100200
480 V
3565100
600 V
182535
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 tripin shorter time than normal. The amount of time delay reduction is inverse to the amount of time that
completely reset memory.
i
r n
Current in Multiples of (lr) Current in Multiples of (lr)
Current in Multiples of (lr)
TIM
E IN
SE
CO
ND
S
TIM
E IN
SE
CO
ND
S1
MIN
UT
E1
HO
UR
2 H
OU
RS
2
8
10
7
5
4
6
3
0.001
0.01
0.1
1
1000 10000 100000
Current in Amps
Interrupting Rating Determines End of Curve
Fixed Instantaneous Override
600V
480V
240V
Figure 4. Types FDE, HFDE, and FDCE 225A—Long Short Delay and I2T—Curve Number TC01203016E
Long Delay Response (Ir) and Short Delay with I2T Response Curve
Notes:
1 . Curve accuracy applies from –20C to +55C ambient . Temperatures above +85C cause an overtemperature protection trip . For possible continuous ampere derating for ambient above 40C, refer to Eaton .
2 . Application frequency is 50/60 Hz .
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 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 memory .
4 . The right portion of the curve is determined by the interrupting rating of the circuit breaker .
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% .
6 . Total clearing times shown include the response times of the trip unit, the breaker opening, and the interruption of the current .
7 . The short delay pick up has nine settings/positions, 2–8, 10, 12 .
8 . Short delay I2T band has a tolerance of +/–15% .
9 . Breakpoint back to FLAT response occurs @ 8x Ir for upper line of the I2T curve .
10 . For high fault current levels an additional fixed instantaneous hardware override is provided (corresponding to SDPU position nine) at 12x (In) and designated as Ii . Instantaneous tolerance is +/–20% .
11 . For LD response and SD with flat response curve, see: TC01203015E .
12 . For LD response and SD with I2T response (this curve): TC01203016E .
14 . Digitrip RMS 310+ trip units are suitable for functional field testing with test kit Cat . No MTST120V . For field testing using primary injection methods, follow NEMA publication AB 4-2003 .
1 . Curve accuracy applies from –20C to +55C ambient . Temperatures above +85C cause an overtemperature protection trip . For possible continuous ampere derating for ambient above 40C, refer to Eaton .
2 . Application frequency is 50/60 Hz .
3 . Trip units are suitable for functional field testing with test kit style # 70C1056G52 .
4 . For LD response and SD with flat response curve, see: TC01203015E .
5 . For LD response and SD with I2T response curve, see: TC01203016E .
Time Current Curves TC01200002EEffective March 2018
Series CF-Frame
EATON www.eaton.com
0.01
0.1
1
10
100
1000
10000
1 10 100
Tim
e in
Sec
on
ds
Current in Multiples of Ir
300 ms
150 ms
Minimum Commit Time
Maximum totalclearing time
2x
10x
Long Delay Pickup @ 115% Ir ± 5%
Long Delay @ 6 × Ir +0%/-30%
0.001
0.01
0.1
1
1000 10000 100000
Current in Amps
Interrupting Rating Determines End of Curve
Fixed Instantaneous Override
600V
480V
240V
Figure 6. Digitrip 210+ Trip Units (100 & 225A), Long Delay and Short Delay with Flat Response and Override (LSI, Profiles K, J, S, R)Curve Number TD012001EN, June 2015
1 Curve accuracy applies from -20C to +55C . Temperatures above +105C cause an overtemperature protection trip .
2 There is a memory effect that can act to shorten the long delay . Approximately five minutes is required between overloads to completely reset this thermal memory .
3 Total clearing times shown include the response times of the trip unit, the breaker opening, and the interruption of the current .
4 Short delay pickups settings in multiples of Ir ± 10% . Short delay time accuracy +0ms/-30ms
5 For high fault current levels an additional fixed instantaneous hardware override is provided at 2500A ±10% .
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Time Current Curves TC01200002EEffective March 2018
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EATON www.eaton.com
0.01
0.1
1
10
100
1000
10000
1 10 100
Tim
e in
Sec
on
ds
Current in Multiples of I r
150 ms
50 ms
Minimum Commit Time
Maximum total clearing time
Fixed Instantaneous Override
0.001
0.01
0.1
1
1000 10000 100000
Current in Amps
Interrupting Rating Determines End of Curve
Fixed Instantaneous Override
600V 480V
240V
4x
Long Delay Pickup @ 115% Ir ± 5%
Long Delay @ 6 × Ir +0%/-30%
Figure 7. Digitrip 210+ Trip Units (100 & 225A), Long Delay and Short Delay with Flat Response and Override (LSI, Profiles N, M)Curve Number TD012002EN, June 2015
1 Curve accuracy applies from -20C to +55C . Temperatures above +105C cause an overtemperature protection trip .
2 There is a memory effect that can act to shorten the long delay . Approximately five minutes is required between overloads to completely reset this thermal memory .
3 Total clearing times shown include the response times of the trip unit, the breaker opening, and the interruption of the current .
4 Short delay pickups settings in multiples of Ir ± 10% . Short delay time accuracy +0ms/-30ms
5 For high fault current levels an additional fixed instantaneous hardware override is provided at 2500A ±10% .
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Time Current Curves TC01200002EEffective March 2018
Series CF-Frame
EATON www.eaton.com
0.01
0.1
1
10
100
1000
10000
1 10 100
Tim
e in
Sec
on
ds
Current in Multiples of Ir
300 ms
50 ms
Minimum Commit Time
Maximum total clearing time
0.001
0.01
0.1
1
1000 10000 100000
Current in Amps
Interrupting Rating Determines End of Curve
Fixed Instantaneous Override
600V 480V
240V
6x
Long Delay Pickup @ 115% Ir ± 5%
Long Delay @ 6 × Ir +0%/-30%
Figure 8. Digitrip 210+ Trip Units (100 & 225A), Long Delay and Short Delay with Flat Response and Override (LSI, Profiles Q, P)Curve Number TD012003EN, June 2015
1 Curve accuracy applies from -20C to +55C . Temperatures above +105C cause an overtemperature protection trip .
2 There is a memory effect that can act to shorten the long delay . Approximately five minutes is required between overloads to completely reset this thermal memory .
3 Total clearing times shown include the response times of the trip unit, the breaker opening, and the interruption of the current .
4 Short delay pickups settings in multiples of Ir ± 10% . Short delay time accuracy +0ms/-30ms
5 For high fault current levels an additional fixed instantaneous hardware override is provided at 2500A ±10% .
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Time Current Curves TC01200002EEffective March 2018
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EATON www.eaton.com
0.01
0.1
1
10
100
1000
10000
1 10 100
Tim
e in
Sec
on
ds
Current in Multiples of Ir
Minimum Commit Time
Maximum total clearing time
I2T Short Delay
0.001
0.01
0.1
1
1000 10000 100000
Current in Amps
Interrupting Rating Determines End of Curve
Fixed Instantaneous Override
600V
480V
240V
4x
2x
Long Delay Pickup @ 115% Ir ± 5%
Long Delay @ 6 × Ir +0%/-30%
Figure 9. Digitrip 210+ Trip Units (100 & 225A), Long Delay and Short Delay with I2t Response and Override (LSI, Profiles L, O)Curve Number TD012004EN, June 2015
1 Curve accuracy applies from -20C to +55C . Temperatures above +105C cause an overtemperature protection trip .
2 There is a memory effect that can act to shorten the long delay . Approximately five minutes is required between overloads to completely reset this thermal memory .
3 Total clearing times shown include the response times of the trip unit, the breaker opening, and the interruption of the current .
4 Short delay pickups settings in multiples of Ir ± 10% . Short delay time accuracy +0ms/-30ms
5 For high fault current levels an additional fixed instantaneous hardware override is provided at 2500A ±10% .
13
Time Current Curves TC01200002EEffective March 2018
Series CF-Frame
EATON www.eaton.com
0.01
0.1
1
10
100
1000
10000
1 10 100
Tim
e in
Sec
on
ds
Current in Multiples of I n
2×
3×
3.5x
2.5x
4×
5×
6×
8×
10×
12×
0.001
0.01
0.1
1
1000 10000 100000
Current in Amps
Interrupting Rating Determines End of Curve
Fixed Instantaneous Override
Long Delay Pickup @ 115% Ir ± 5%
Long Delay @ 6 × Ir +0%/-30%
Instantaneous Pickup ± 10%
600V
480V
240V
Figure 10. Digitrip 210+ Trip Units (100 & 150A), Long Delay, Instantaneous Pickups and Override (LI)Curve Number TD012005EN, June 2015
1 Curve accuracy applies from -20C to +55C . Temperatures above +105C cause an overtemperature protection trip .
2 There is a thermal memory effect that can act to shorten the long delay . The amount of time delay reduction is inversely proportional to the amount of time that has elapsed since the previous overload . Approximately five minutes is required between overloads to completely reset this thermal memory effect .
3 Total clearing times shown include the response times of the trip unit, the breaker opening, and the interruption of the current .
4 For high fault current levels an additional fixed instantaneous hardware override is provided at 2400A ±20% (corresponding to 11xlr 225A frame, 16xlr for 150A frame, and 24xlr for 100A frame) .
A 40A 70AB 50A 80A C 60A 90AD 70A 100AE 80A 110AF 90A 125AG 100A 150A
Rated AmperesIr 100A 150A
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Time Current Curves TC01200002EEffective March 2018
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EATON www.eaton.com
0.01
0.1
1
10
100
1000
10000
1 10 100
Tim
e in
Sec
on
ds
Current in Multiples of In
2×
2.5×
3.5×
3×
4×
5×
6×
8×
10×
Long Delay Pickup @ 115% Ir ± 5%
Long Delay @ 6 × Ir +0%/-30%
0.001
0.01
0.1
1
1000 10000 100000
Current in Amps
Interrupting Rating Determines End of Curve
Fixed Instantaneous Override
600V
480V
240V
Instantaneous Pickup ±10%
Figure 11. Digitrip 210+ Trip Units (225A), Long Delay, Instantaneous Pickups and Override (LI)Curve Number TD012006EN, June 2015
1 Curve accuracy applies from -20C to +55C . Temperatures above +105C cause an overtemperature protection trip .
2 There is a thermal memory effect that can act to shorten the long delay . The amount of time delay reduction is inversely proportional to the amount of time that has elapsed since the previous overload . Approximately five minutes is required between overloads to completely reset this thermal memory effect .
3 Total clearing times shown include the response times of the trip unit, the breaker opening, and the interruption of the current .
4 For high fault current levels an additional fixed instantaneous hardware override is provided at 2400A ±20% (corresponding to 11xlr 225A frame, 16xlr for 150A frame, and 24xlr for 100A frame) .
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Time Current Curves TC01200002EEffective March 2018
Series CF-Frame
EATON www.eaton.com
Minimum Maximum
Interruptingratingdeterminesend of curve
100
50
30
20
10
5
3
2
1
.5
.3
.2
.1
.05
.03
.02
.01
.005
.003
.002
.001
TIM
E IN
SE
CO
ND
S
1,000
500
300
200
5,000
3,000
2,000
1 HO
UR
1 MIN
UT
E2 H
OU
RS
1000
0
8000
6000
9000
7000
5000
4000
3000
2000
1000
800
600
900
700
500
400
300
200
1008060 907050403020109875 6
TIM
E IN
SE
CO
ND
S
10,000
100
50
30
20
10
5
3
2
1
.5
.3
.2
.1
.05
.03
.02
.01
.005
.003
.002
.001
1,000
500
300
200
5,000
3,000
2,000
1 H
OU
R1
MIN
UT
E2
HO
UR
S
CURRENT IN AMPERES
1000
0
8000
6000
9000
7000
5000
4000
3000
2000
1000
800
600
900
700
500
400
300
200
100
8060 907050403020109875 6
15A
Maximum single-pole trip timesat 25°C 1
CURRENT IN AMPERES
Maximum interrupting time
Figure 12. Single Pole, Series C, Types EHD, FD, and HFD 15A—Curve Number SC-4423-88A
Circuit breaker time/current curves
Series C F-frame circuit breakers
Catalog Types: EHD, FD and HFD circuit breakers, single-pole .
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 100A, 75°C above 125A) per terminal . Tested in open air .
Maximum Vac: 277 at 50/60 HzMaximum Vdc: 125
Notes:
1 Single-pole test data at 25°C based on NEMA procedures (AB 4-2003) for verifying performance of molded case circuit breakers .
Symmetrical RMS amperes (kA) DC Amps
EHD FDHFD
277V 125VBreaker Type
Interrupting Rating (UL/CSA Listed)
15A See curve
Breaker rating
Continuous amperes Instantaneous trip, amperes
14 1035 1065 10
16
Time Current Curves TC01200002EEffective March 2018
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EATON www.eaton.com
Minimum Maximum
Interruptingratingdeterminesend of curve
Maximuminterruptingtime
100
50
30
20
10
5
3
2
1
.5
.3
.2
.1
.05
.03
.02
.01
.005
.003
.002
.001
TIM
E IN
SE
CO
ND
S
1,000
500
300
200
5,000
3,000
2,000
1 HO
UR
1 MIN
UT
E2 H
OU
RS
1000
0
8000
6000
9000
7000
5000
4000
3000
2000
1000
800
600
900
700
500
400
300
200
1008060 907050403020109875 6
TIM
E IN
SE
CO
ND
S10,000
100
50
30
20
10
5
3
2
1
.5
.3
.2
.1
.05
.03
.02
.01
.005
.003
.002
.001
1,000
500
300
200
5,000
3,000
2,000
1 H
OU
R1
MIN
UT
E2
HO
UR
S
CURRENT IN AMPERES
1000
0
8000
6000
9000
7000
5000
4000
3000
2000
1000
800
600
900
700
500
400
300
200
100
8060 907050403020109875 6
20A
Maximum single-pole trip timesat 25°C 1
CURRENT IN AMPERES
Figure 13. Single Pole, Series C, Types EHD, FD, and HFD 20A—Curve Number SC-4424-88A
Circuit breaker time/current curves
Series C F-frame circuit breakers
Catalog Types: EHD, FD and HFD circuit breakers, single-pole .
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 100A, 75°C above 125A) per terminal . Tested in open air .
Maximum Vac: 277 at 50/60 HzMaximum Vdc: 125
Notes:
1 Single-pole test data at 25°C based on NEMA procedures (AB 4-2003) for verifying performance of molded case circuit breakers .
Symmetrical RMS amperes (kA) DC Amps
EHD FDHFD
277V 125VBreaker Type
Interrupting Rating (UL/CSA Listed)
20A See curve
Breaker rating
Continuous amperes Instantaneous trip, amperes
14 1035 1065 10
17
Time Current Curves TC01200002EEffective March 2018
Series CF-Frame
EATON www.eaton.com
Interruptingratingdeterminesend of curve
Minimum Maximum
100
50
30
20
10
5
3
2
1
.5
.3
.2
.1
.05
.03
.02
.01
.005
.003
.002
.001
TIM
E IN
SE
CO
ND
S
1,000
500
300
200
5,000
3,000
2,000
1 HO
UR
1 MIN
UT
E2 H
OU
RS
1000
0
8000
6000
9000
7000
5000
4000
3000
2000
1000
800
600
900
700
500
400
300
200
1008060 907050403020109875 6
TIM
E IN
SE
CO
ND
S
10,000
100
50
30
20
10
5
3
2
1
.5
.3
.2
.1
.05
.03
.02
.01
.005
.003
.002
.001
1,000
500
300
200
5,000
3,000
2,000
1 H
OU
R1
MIN
UT
E2
HO
UR
S
CURRENT IN AMPERES
1000
0
8000
6000
9000
7000
5000
4000
3000
2000
1000
800
600
900
700
500
400
300
200
100
8060 907050403020109875 6
25A
Maximum single-pole t rip ti mesat 25°C 1
CURRENT IN AMPERES
Maximum interrupting time
Figure 14. Single Pole, Series C, Types EHD, FD, and HFD 25A—Curve No. SC-4425-88A
Circuit breaker time/current curves
Series C F-frame circuit breakers
Catalog Types: EHD, FD and HFD circuit breakers, single-pole .
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 100A, 75°C above 125A) per terminal . Tested in open air .
Maximum Vac: 277 at 50/60 HzMaximum Vdc: 125
Notes:
1 Single-pole test data at 25°C based on NEMA procedures (AB 4-2003) for verifying performance of molded case circuit breakers .
Symmetrical RMS amperes (kA) DC Amps
EHD FDHFD
277V 125VBreaker Type
Interrupting Rating (UL/CSA Listed)
25A See curve
Breaker rating
Continuous amperes Instantaneous trip, amperes
14 1035 1065 10
18
Time Current Curves TC01200002EEffective March 2018
Series CF-Frame
EATON www.eaton.com
Interruptingratingdeterminesend of curve
Minimum Maximum
100
50
30
20
10
5
3
2
1
.5
.3
.2
.1
.05
.03
.02
.01
.005
.003
.002
.001
TIM
E IN
SE
CO
ND
S
1,000
500
300
200
5,000
3,000
2,000
1 HO
UR
1 MIN
UT
E2 H
OU
RS
1000
0
8000
6000
9000
7000
5000
4000
3000
2000
1000
800
600
900
700
500
400
300
200
1008060 907050403020109875 6
TIM
E IN
SE
CO
ND
S10,000
100
50
30
20
10
5
3
2
1
.5
.3
.2
.1
.05
.03
.02
.01
.005
.003
.002
.001
1,000
500
300
200
5,000
3,000
2,000
1 H
OU
R1
MIN
UT
E2
HO
UR
S
CURRENT IN AMPERES
1000
0
8000
6000
9000
7000
5000
4000
3000
2000
1000
800
600
900
700
500
400
300
200
100
8060 907050403020109875 6
30A
Maximum single-pole trip timesat 25°C 1
CURRENT IN AMPERES
Maximum interrupting time
Figure 15. Single Pole, Series C, Types EHD, FD, and HFD 30A—Curve Number SC-4426-88A
Circuit breaker time/current curves
Series C F-frame circuit breakers
Catalog Types: EHD, FD and HFD circuit breakers, single-pole .
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 100A, 75°C above 125A) per terminal . Tested in open air .
Maximum Vac: 277 at 50/60 HzMaximum Vdc: 125
Notes:
1 Single-pole test data at 25°C based on NEMA procedures (AB 4-2003) for verifying performance of molded case circuit breakers .
Symmetrical RMS amperes (kA) DC Amps
EHD FDHFD
277V 125VBreaker Type
Interrupting Rating (UL/CSA Listed)
30A See curve
Breaker rating
Continuous amperes Instantaneous trip, amperes
14 1035 1065 10
19
Time Current Curves TC01200002EEffective March 2018
Series CF-Frame
EATON www.eaton.com
Interruptingratingdeterminesend of curve
Maximuminterruptingtime
Minimum Maximum
100
50
30
20
10
5
3
2
1
.5
.3
.2
.1
.05
.03
.02
.01
.005
.003
.002
.001
TIM
E IN
SE
CO
ND
S
1,000
500
300
200
5,000
3,000
2,000
1 HO
UR
1 MIN
UT
E2 H
OU
RS
1000
0
8000
6000
9000
7000
5000
4000
3000
2000
1000
800
600
900
700
500
400
300
200
1008060 907050403020109875 6
TIM
E IN
SE
CO
ND
S
10,000
100
50
30
20
10
5
3
2
1
.5
.3
.2
.1
.05
.03
.02
.01
.005
.003
.002
.001
1,000
500
300
200
5,000
3,000
2,000
1 H
OU
R1
MIN
UT
E2
HO
UR
S
CURRENT IN AMPERES
1000
0
8000
6000
9000
7000
5000
4000
3000
2000
1000
800
600
900
700
500
400
300
200
100
8060 907050403020109875 6
35A
Maximum single-pole trip timesat 25°C 1
CURRENT IN AMPERES
Catalog types EHD, FD and HFD circuit breakers, single-pole.For application and coordination purposes only.Based on 40˚C ambient, cold start. Connected with four (4) feet ofrated wire (60˚C up to 100A, 75˚C above 125A) per terminal.Tested in open air.
Maximum Vac : 277 at 50/60 HzMaximum Vdc : 125
Breaker ratingContinuous amperes Instantaneous trip, amperes35A See curve
Breakertype
Symmetrical Rms amperes (kA )
143565
EHDFDHFD
101010
Single-pole test data at 25˚C based on NEMA procedures(AB 4-2003circuit
277V
DC amps
125V
Interrupting rating (UL/CSA listed)
Figure 16. Single Pole, Series C, Types EHD, FD, and HFD 35A—Curve Number SC-4427-88A
Circuit breaker time/current curves
Series C F-frame circuit breakers
Catalog Types: EHD, FD and HFD circuit breakers, single-pole .
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 100A, 75°C above 125A) per terminal . Tested in open air .
Maximum Vac: 277 at 50/60 HzMaximum Vdc: 125
Notes:
1 Single-pole test data at 25°C based on NEMA procedures (AB 4-2003) for verifying performance of molded case circuit breakers .
Symmetrical RMS amperes (kA) DC Amps
EHD FDHFD
277V 125VBreaker Type
Interrupting Rating (UL/CSA Listed)
35A See curve
Breaker rating
Continuous amperes Instantaneous trip, amperes
14 1035 1065 10
20
Time Current Curves TC01200002EEffective March 2018
Series CF-Frame
EATON www.eaton.com
Interruptingratingdeterminesend of curve
Minimum Maximum
100
50
30
20
10
5
3
2
1
.5
.3
.2
.1
.05
.03
.02
.01
.005
.003
.002
.001
TIM
E IN
SE
CO
ND
S
1,000
500
300
200
5,000
3,000
2,000
1 HO
UR
1 MIN
UT
E2 H
OU
RS
1000
0
8000
6000
9000
7000
5000
4000
3000
2000
1000
800
600
900
700
500
400
300
200
1008060 907050403020109875 6
TIM
E IN
SE
CO
ND
S
10,000
100
50
30
20
10
5
3
2
1
.5
.3
.2
.1
.05
.03
.02
.01
.005
.003
.002
.001
1,000
500
300
200
5,000
3,000
2,000
1 H
OU
R1
MIN
UT
E2
HO
UR
SCURRENT IN AMPERES
1000
0
8000
6000
9000
7000
5000
4000
3000
2000
1000
800
600
900
700
500
400
300
200
100
8060 907050403020109875 6
40A
Maximum single-pole trip timesat 25°C 1
CURRENT IN AMPERES
Maximum interrupting time
Circuit breaker time/current curvesSeries C ® F-frame circuit breakersCatalog types EHD, FD and HFD circuit breakers, single-pole.For application and coordination purposes only.Based on 40˚C ambient, cold start. Connected with four (4) feet ofrated wire (60˚C up to 100A, 75˚C above 125A) per terminal.Tested in open air.
Maximum Vac: 277 at 50/60 HzMaximum Vdc: 125
Breaker ratingContinuous amperes Instantaneous trip, amperes40A See curve
Breakertype
Symmetrical Rms amperes (kA )
143565
EHDFDHFD
101010
Single-pole test data at 25˚C based on NEMA procedures(AB 4-2003) for verifying performance of molded case circuit breakers.
277V
DC amps
125V
Interrupting rating (UL/CSA listed)
Figure 17. Single Pole, Series C, Types EHD, FD, and HFD 40A—Curve Number SC-4428-88A
Circuit breaker time/current curves
Series C F-frame circuit breakers
Catalog Types: EHD, FD and HFD circuit breakers, single-pole .
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 100A, 75°C above 125A) per terminal . Tested in open air .
Maximum Vac: 277 at 50/60 HzMaximum Vdc: 125
Notes:
1 Single-pole test data at 25°C based on NEMA procedures (AB 4-2003) for verifying performance of molded case circuit breakers .
Symmetrical RMS amperes (kA) DC Amps
EHD FDHFD
277V 125VBreaker Type
Interrupting Rating (UL/CSA Listed)
40A See curve
Breaker rating
Continuous amperes Instantaneous trip, amperes
14 1035 1065 10
21
Time Current Curves TC01200002EEffective March 2018
Series CF-Frame
EATON www.eaton.com
Interruptingratingdeterminesend of curve
Minimum Maximum
100
50
30
20
10
5
3
2
1
.5
.3
.2
.1
.05
.03
.02
.01
.005
.003
.002
.001
TIM
E IN
SE
CO
ND
S
1,000
500
300
200
5,000
3,000
2,000
1 HO
UR
1 MIN
UT
E2 H
OU
RS
1000
0
8000
6000
9000
7000
5000
4000
3000
2000
1000
800
600
900
700
500
400
300
200
1008060 907050403020109875 6
TIM
E IN
SE
CO
ND
S
10,000
100
50
30
20
10
5
3
2
1
.5
.3
.2
.1
.05
.03
.02
.01
.005
.003
.002
.001
1,000
500
300
200
5,000
3,000
2,000
1 H
OU
R1
MIN
UT
E2
HO
UR
S
CURRENT IN AMPERES
1000
0
8000
6000
9000
7000
5000
4000
3000
2000
1000
800
600
900
700
500
400
300
200
100
8060 907050403020109875 6
45A
Maximum single-pole trip timesat 25°C 1
CURRENT IN AMPERES
Maximum interrupting time
Circuit breaker time/current curvesSeries C ® F-frame circuit breakersCatalog types EHD, FD and HFD circuit breakers, single-pole.For application and coordination purposes only.Based on 40˚C ambient, cold start. Connected with four (4) feet ofrated wire (60˚C up to 100A, 75˚C above 125A) per terminal.Tested in open air.
Maximum Vac : 277 at 50/60 HzMaximum Vdc : 125
Breaker ratingContinuous amperes Instantaneous trip, amperes45A See curve
Breakertype
Symmetrical Rms amperes (kA )
143565
EHDFDHFD
101010
Single-pole test data at 25˚C based on NEMA procedures(AB 4-2003) for verifying performance of molded case circuit breakers.
277V
DC amps
125V
Interrupting rating (UL/CSA listed)
Figure 18. Single Pole, Series C, Types EHD, FD, and HFD 45A—Curve No. SC-4429-88A
Circuit breaker time/current curves
Series C F-frame circuit breakers
Catalog Types: EHD, FD and HFD circuit breakers, single-pole .
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 100A, 75°C above 125A) per terminal . Tested in open air .
Maximum Vac: 277 at 50/60 HzMaximum Vdc: 125
Notes:
1 Single-pole test data at 25°C based on NEMA procedures (AB 4-2003) for verifying performance of molded case circuit breakers .
Symmetrical RMS amperes (kA) DC Amps
EHD FDHFD
277V 125VBreaker Type
Interrupting Rating (UL/CSA Listed)
45A See curve
Breaker rating
Continuous amperes Instantaneous trip, amperes
14 1035 1065 10
22
Time Current Curves TC01200002EEffective March 2018
Series CF-Frame
EATON www.eaton.com
Interruptingratingdeterminesend of curve
Minimum Maximum
100
50
30
20
10
5
3
2
1
.5
.3
.2
.1
.05
.03
.02
.01
.005
.003
.002
.001
TIM
E IN
SE
CO
ND
S
1,000
500
300
200
5,000
3,000
2,000
1 HO
UR
1 MIN
UT
E2 H
OU
RS
1000
0
8000
6000
9000
7000
5000
4000
3000
2000
1000
800
600
900
700
500
400
300
200
1008060 907050403020109875 6
TIM
E IN
SE
CO
ND
S10,000
100
50
30
20
10
5
3
2
1
.5
.3
.2
.1
.05
.03
.02
.01
.005
.003
.002
.001
1,000
500
300
200
5,000
3,000
2,000
1 H
OU
R1
MIN
UT
E2
HO
UR
S
CURRENT IN AMPERES
1000
0
8000
6000
9000
7000
5000
4000
3000
2000
1000
800
600
900
700
500
400
300
200
100
8060 907050403020109875 6
50A
Maximum single-pole trip timesat 25°C 1
CURRENT IN AMPERES
Maximum interrupting time
Circuit breaker time/current curvesSeries C ® F-frame circuit breakersCatalog types EHD, FD and HFD circuit breakers, single-pole.For application and coordination purposes only.Based on 40˚C ambient, cold start. Connected with four (4) feet ofrated wire (60˚C up to 100A, 75˚C above 125A) per terminal.Tested in open air.
Maximum Vac: 277 at 50/60 HzMaximum Vdc: 125
Breaker ratingContinuous amperes Instantaneous trip, amperes50A See curve
Breakertype
Symmetrical Rms amperes (kA )
143565
EHDFDHFD
101010
Single-pole test data at 25˚C based on NEMA procedures(AB 4-2003) for verifying performance of molded case circuit breakers.
277V
DC amps
125V
Interrupting rating (UL/CSA listed)
Figure 19. Single Pole, Series C, Types EHD, FD, and HFD 50A—Curve Number SC-4430-88A
Interruptingratingdeterminesend of curve
Minimum Maximum
100
50
30
20
10
5
3
2
1
.5
.3
.2
.1
.05
.03
.02
.01
.005
.003
.002
.001
TIM
E IN
SE
CO
ND
S
1,000
500
300
200
5,000
3,000
2,000
1 HO
UR
1 MIN
UT
E2 H
OU
RS
1000
0
8000
6000
9000
7000
5000
4000
3000
2000
1000
800
600
900
700
500
400
300
200
1008060 907050403020109875 6
TIM
E IN
SE
CO
ND
S
10,000
100
50
30
20
10
5
3
2
1
.5
.3
.2
.1
.05
.03
.02
.01
.005
.003
.002
.001
1,000
500
300
200
5,000
3,000
2,000
1 H
OU
R1
MIN
UT
E2
HO
UR
S
CURRENT IN AMPERES
1000
0
8000
6000
9000
7000
5000
4000
3000
2000
1000
800
600
900
700
500
400
300
200
100
8060 907050403020109875 6
60A
Maximum single-pole trip timesat 25°C 1
CURRENT IN AMPERES
Maximum interrupting time
Circuit breaker time/current curvesSeries C ® F-frame circuit breakersCatalog types EHD, FD and HFD circuit breakers, single-pole.For application and coordination purposes only.Based on 40˚C ambient, cold start. Connected with four (4) feet ofrated wire (60˚C up to 100A, 75˚C above 125A) per terminal.Tested in open air.
Maximum Vac: 277 at 50/60 HzMaximum Vdc: 125
Breaker ratingContinuous amperes Instantaneous trip, amperes60A See curve
Single-pole test data at 25˚C based on NEMA procedures(AB 4-2003) for verifying performance of molded case circuit breakers.
Breakertype
Symmetrical Rms amperes (kA )
143565
EHDFDHFD
101010
277V
DC amps
125V
Interrupting rating (UL/CSA listed)
Circuit breaker time/current curves
Series C F-frame circuit breakers
Catalog Types: EHD, FD and HFD circuit breakers, single-pole .
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 100A, 75°C above 125A) per terminal . Tested in open air .
Maximum Vac: 277 at 50/60 HzMaximum Vdc: 125
Notes:
1 Single-pole test data at 25°C based on NEMA procedures (AB 4-2003) for verifying performance of molded case circuit breakers .
Symmetrical RMS amperes (kA) DC Amps
EHD FDHFD
277V 125VBreaker Type
Interrupting Rating (UL/CSA Listed)
50A See curve
Breaker rating
Continuous amperes Instantaneous trip, amperes
14 1035 1065 10
23
Time Current Curves TC01200002EEffective March 2018
Series CF-Frame
EATON www.eaton.com
Interruptingratingdeterminesend of curve
Minimum Maximum
100
50
30
20
10
5
3
2
1
.5
.3
.2
.1
.05
.03
.02
.01
.005
.003
.002
.001
TIM
E IN
SE
CO
ND
S
1,000
500
300
200
5,000
3,000
2,000
1 HO
UR
1 MIN
UT
E2 H
OU
RS
1000
0
8000
6000
9000
7000
5000
4000
3000
2000
1000
800
600
900
700
500
400
300
200
1008060 907050403020109875 6
TIM
E IN
SE
CO
ND
S
10,000
100
50
30
20
10
5
3
2
1
.5
.3
.2
.1
.05
.03
.02
.01
.005
.003
.002
.001
1,000
500
300
200
5,000
3,000
2,000
1 H
OU
R1
MIN
UT
E2
HO
UR
S
CURRENT IN AMPERES
1000
0
8000
6000
9000
7000
5000
4000
3000
2000
1000
800
600
900
700
500
400
300
200
100
8060 907050403020109875 6
60A
Maximum single-pole trip timesat 25°C 1
CURRENT IN AMPERES
Maximum interrupting time
Circuit breaker time/current curvesSeries C ® F-frame circuit breakersCatalog types EHD, FD and HFD circuit breakers, single-pole.For application and coordination purposes only.Based on 40˚C ambient, cold start. Connected with four (4) feet ofrated wire (60˚C up to 100A, 75˚C above 125A) per terminal.Tested in open air.
Maximum Vac: 277 at 50/60 HzMaximum Vdc: 125
Breaker ratingContinuous amperes Instantaneous trip, amperes60A See curve
Single-pole test data at 25˚C based on NEMA procedures(AB 4-2003) for verifying performance of molded case circuit breakers.
Breakertype
Symmetrical Rms amperes (kA )
143565
EHDFDHFD
101010
277V
DC amps
125V
Interrupting rating (UL/CSA listed)
Figure 20. Single Pole, Series C, Types EHD, FD, and HFD 60A—Curve Number SC-4431-88A
Circuit breaker time/current curves
Series C F-frame circuit breakers
Catalog Types: EHD, FD and HFD circuit breakers, single-pole .
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 100A, 75°C above 125A) per terminal . Tested in open air .
Maximum Vac: 277 at 50/60 HzMaximum Vdc: 125
Notes:
1 Single-pole test data at 25°C based on NEMA procedures (AB 4-2003) for verifying performance of molded case circuit breakers .
Symmetrical RMS amperes (kA) DC Amps
EHD FDHFD
277V 125VBreaker Type
Interrupting Rating (UL/CSA Listed)
60A See curve
Breaker rating
Continuous amperes Instantaneous trip, amperes
14 1035 1065 10
24
Time Current Curves TC01200002EEffective March 2018
Series CF-Frame
EATON www.eaton.com
Interruptingratingdeterminesend of curve
Minimum Maximum
100
50
30
20
10
5
3
2
1
.5
.3
.2
.1
.05
.03
.02
.01
.005
.003
.002
.001
TIM
E IN
SE
CO
ND
S
1,000
500
300
200
5,000
3,000
2,000
1 HO
UR
1 MIN
UT
E2 H
OU
RS
1000
0
8000
6000
9000
7000
5000
4000
3000
2000
1000
800
600
900
700
500
400
300
200
1008060 907050403020109875 6
TIM
E IN
SE
CO
ND
S10,000
100
50
30
20
10
5
3
2
1
.5
.3
.2
.1
.05
.03
.02
.01
.005
.003
.002
.001
1,000
500
300
200
5,000
3,000
2,000
1 H
OU
R1
MIN
UT
E2
HO
UR
S
CURRENT IN AMPERES
1000
0
8000
6000
9000
7000
5000
4000
3000
2000
1000
800
600
900
700
500
400
300
200
100
8060 907050403020109875 6
70A
Maximum single-pole trip timesat 25°C 1
CURRENT IN AMPERES
Maximuminterruptingtime
Circuit breaker time/current curvesSeries C ® F-frame circuit breakersCatalog types EHD, FD and HFD circuit breakers, single-pole.For application and coordination purposes only.Based on 40˚C ambient, cold start. Connected with four (4) feet ofrated wire (60˚C up to 100A, 75˚C above 125A) per terminal.Tested in open air.
Maximum Vac: 277 at 50/60 HzMaximum Vdc: 125
Breaker ratingContinuous amperes Instantaneous trip, amperes70A See curve
Single-pole test data at 25˚C based on NEMA procedures(AB 4-2003) for verifying performance of molded case circuit breakers.
Breakertype
Symmetrical Rms amperes (kA )
143565
EHDFDHFD
101010
277V
DC amps
125V
Interrupting rating (UL/CSA listed)
Figure 21. Single Pole, Series C, Types EHD, FD, and HFD 70A—Curve Number SC-4432-88A
Circuit breaker time/current curves
Series C F-frame circuit breakers
Catalog Types: EHD, FD and HFD circuit breakers, single-pole .
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 100A, 75°C above 125A) per terminal . Tested in open air .
Maximum Vac: 277 at 50/60 HzMaximum Vdc: 125
Notes:
1 Single-pole test data at 25°C based on NEMA procedures (AB 4-2003) for verifying performance of molded case circuit breakers .
Symmetrical RMS amperes (kA) DC Amps
EHD FDHFD
277V 125VBreaker Type
Interrupting Rating (UL/CSA Listed)
70A See curve
Breaker rating
Continuous amperes Instantaneous trip, amperes
14 1035 1065 10
25
Time Current Curves TC01200002EEffective March 2018
Series CF-Frame
EATON www.eaton.com
Interruptingratingdeterminesend of curve
Minimum Maximum
100
50
30
20
10
5
3
2
1
.5
.3
.2
.1
.05
.03
.02
.01
.005
.003
.002
.001
TIM
E IN
SE
CO
ND
S
1,000
500
300
200
5,000
3,000
2,000
1 HO
UR
1 MIN
UT
E2 H
OU
RS
1000
0
8000
6000
9000
7000
5000
4000
3000
2000
1000
800
600
900
700
500
400
300
200
1008060 907050403020109875 6
TIM
E IN
SE
CO
ND
S
10,000
100
50
30
20
10
5
3
2
1
.5
.3
.2
.1
.05
.03
.02
.01
.005
.003
.002
.001
1,000
500
300
200
5,000
3,000
2,000
1 H
OU
R1
MIN
UT
E2
HO
UR
S
CURRENT IN AMPERES
1000
0
8000
6000
9000
7000
5000
4000
3000
2000
1000
800
600
900
700
500
400
300
200
100
8060 907050403020109875 6
80A
Maximum single-pole trip timesat 25°C 1
CURRENT IN AMPERES
Maximuminterruptingtime
Circuit breaker time/current curvesSeries C ® F-frame circuit breakersCatalog types EHD, FD and HFD circuit breakers, single-pole.For application and coordination purposes only.Based on 40˚C ambient, cold start. Connected with four (4) feet ofrated wire (60˚C up to 100A, 75˚C above 125A) per terminal.Tested in open air.
Maximum Vac: 277 at 50/60 HzMaximum Vdc: 125
Breaker ratingContinuous amperes Instantaneous trip, amperes80A See curve
Single-pole test data at 25˚C based on NEMA procedures(AB 4-2003) for verifying performance of molded case circuit breakers.
Breakertype
Symmetrical Rms amperes (kA )
143565
EHDFDHFD
101010
277V
DC amps
125V
Interrupting rating (UL/CSA listed)
Figure 22. Single Pole, Series C, Types EHD, FD, and HFD 80A—Curve Number SC-4433-88A
Circuit breaker time/current curves
Series C F-frame circuit breakers
Catalog Types: EHD, FD and HFD circuit breakers, single-pole .
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 100A, 75°C above 125A) per terminal . Tested in open air .
Maximum Vac: 277 at 50/60 HzMaximum Vdc: 125
Notes:
1 Single-pole test data at 25°C based on NEMA procedures (AB 4-2003) for verifying performance of molded case circuit breakers .
Symmetrical RMS amperes (kA) DC Amps
EHD FDHFD
277V 125VBreaker Type
Interrupting Rating (UL/CSA Listed)
80A See curve
Breaker rating
Continuous amperes Instantaneous trip, amperes
14 1035 1065 10
26
Time Current Curves TC01200002EEffective March 2018
Series CF-Frame
EATON www.eaton.com
Interruptingratingdeterminesend of curve
Minimum Maximum
100
50
30
20
10
5
3
2
1
.5
.3
.2
.1
.05
.03
.02
.01
.005
.003
.002
.001
TIM
E IN
SE
CO
ND
S
1,000
500
300
200
5,000
3,000
2,000
1 HO
UR
1 MIN
UT
E2 H
OU
RS
1000
0
8000
6000
9000
7000
5000
4000
3000
2000
1000
800
600
900
700
500
400
300
200
1008060 907050403020109875 6
TIM
E IN
SE
CO
ND
S10,000
100
50
30
20
10
5
3
2
1
.5
.3
.2
.1
.05
.03
.02
.01
.005
.003
.002
.001
1,000
500
300
200
5,000
3,000
2,000
1 H
OU
R1
MIN
UT
E2
HO
UR
S
CURRENT IN AMPERES
1000
0
8000
6000
9000
7000
5000
4000
3000
2000
1000
800
600
900
700
500
400
300
200
100
8060 907050403020109875 6
90A
Maximum single-pole trip timesat 25°C 1
CURRENT IN AMPERES
Maximuminterruptingtime
Circuit breaker time/current curvesSeries C ® F-frame circuit breakersCatalog types EHD, FD and HFD circuit breakers, single-pole.For application and coordination purposes only.Based on 40˚C ambient, cold start. Connected with four (4) feet ofrated wire (60˚C up to 100A, 75˚C above 125A) per terminal.Tested in open air.
Maximum Vac: 277 at 50/60 HzMaximum Vdc: 125
Breaker ratingContinuous amperes Instantaneous trip, amperes90A See curve
Single-pole test data at 25˚C based on NEMA procedures(AB 4-2003) for verifying performance of molded case circuitbreakers.
Breakertype
Symmetrical Rms amperes (kA )
143565
EHDFDHFD
101010
277V
DC amps
125V
Interrupting rating (UL/CSA listed)
Figure 23. Single Pole, Series C, Types EHD, FD, and HFD 90A—Curve Number SC-4434-88A
Circuit breaker time/current curves
Series C F-frame circuit breakers
Catalog Types: EHD, FD and HFD circuit breakers, single-pole .
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 100A, 75°C above 125A) per terminal . Tested in open air .
Maximum Vac: 277 at 50/60 HzMaximum Vdc: 125
Notes:
1 Single-pole test data at 25°C based on NEMA procedures (AB 4-2003) for verifying performance of molded case circuit breakers .
Symmetrical RMS amperes (kA) DC Amps
EHD FDHFD
277V 125VBreaker Type
Interrupting Rating (UL/CSA Listed)
90A See curve
Breaker rating
Continuous amperes Instantaneous trip, amperes
14 1035 1065 10
27
Time Current Curves TC01200002EEffective March 2018
Series CF-Frame
EATON www.eaton.com
Interruptingratingdeterminesend of curve
Minimum Maximum
100
50
30
20
10
5
3
2
1
.5
.3
.2
.1
.05
.03
.02
.01
.005
.003
.002
.001
TIM
E IN
SE
CO
ND
S
1,000
500
300
200
5,000
3,000
2,000
1 HO
UR
1 MIN
UT
E2 H
OU
RS
1000
0
8000
6000
9000
7000
5000
4000
3000
2000
1000
800
600
900
700
500
400
300
200
1008060 907050403020109875 6
TIM
E IN
SE
CO
ND
S
10,000
100
50
30
20
10
5
3
2
1
.5
.3
.2
.1
.05
.03
.02
.01
.005
.003
.002
.001
1,000
500
300
200
5,000
3,000
2,000
1 H
OU
R1
MIN
UT
E2
HO
UR
S
CURRENT IN AMPERES
1000
0
8000
6000
9000
7000
5000
4000
3000
2000
1000
800
600
900
700
500
400
300
200
100
8060 907050403020109875 6
100A
Maximum single-pole trip timesat 25°C 1
CURRENT IN AMPERES
Maximuminterruptingtime
Circuit breaker time/current curvesSeries C ® F-frame circuit breakersCatalog types EHD, FD and HFD circuit breakers, single-pole.For application and coordination purposes only.Based on 40˚C ambient, cold start. Connected with four (4) feet ofrated wire (60˚C up to 100A, 75˚C above 125A) per terminal.Tested in open air.
Maximum Vac: 277 at 50/60 HzMaximum Vdc: 125
Breaker ratingContinuous amperes Instantaneous trip, amperes100A See curve
Single-pole test data at 25˚C based on NEMA procedures(AB 4-2003) for verifying performance of molded case circuit breakers.
Breakertype
Symmetrical Rms amperes (kA )
143565
EHDFDHFD
101010
277V
DC amps
125V
Interrupting rating (UL/CSA listed)
Figure 24. Single Pole, Series C, Types EHD, FD, and HFD 100A—Curve Number SC-4435-88A
Circuit breaker time/current curves
Series C F-frame circuit breakers
Catalog Types: EHD, FD and HFD circuit breakers, single-pole .
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 100A, 75°C above 125A) per terminal . Tested in open air .
Maximum Vac: 277 at 50/60 HzMaximum Vdc: 125
Notes:
1 Single-pole test data at 25°C based on NEMA procedures (AB 4-2003) for verifying performance of molded case circuit breakers .
Symmetrical RMS amperes (kA) DC Amps
EHD FDHFD
277V 125VBreaker Type
Interrupting Rating (UL/CSA Listed)
100A See curve
Breaker rating
Continuous amperes Instantaneous trip, amperes
14 1035 1065 10
28
Time Current Curves TC01200002EEffective March 2018
Series CF-Frame
EATON www.eaton.com
Interruptingratingdeterminesend of curve
Minimum Maximum
100
50
30
20
10
5
3
2
1
.5
.3
.2
.1
.05
.03
.02
.01
.005
.003
.002
.001
TIM
E IN
SE
CO
ND
S
1,000
500
300
200
5,000
3,000
2,000
1 HO
UR
1 MIN
UT
E2 H
OU
RS
1000
0
8000
6000
9000
7000
5000
4000
3000
2000
1000
800
600
900
700
500
400
300
200
1008060 907050403020109875 6
TIM
E IN
SE
CO
ND
S10,000
100
50
30
20
10
5
3
2
1
.5
.3
.2
.1
.05
.03
.02
.01
.005
.003
.002
.001
1,000
500
300
200
5,000
3,000
2,000
1 H
OU
R1
MIN
UT
E2
HO
UR
S
CURRENT IN AMPERES
1000
0
8000
6000
9000
7000
5000
4000
3000
2000
1000
800
600
900
700
500
400
300
200
100
8060 907050403020109875 6
110A
Maximum single-pole trip timesat 25°C 1
CURRENT IN AMPERES
Maximuminterruptingtime
® F-frame circuit breakers
277 at 50/60 Hz 125
1010
DC amps
125V
Figure 25. Single Pole, Series C, Types FD and HFD 110A—Curve Number SC-4436-88A
Circuit breaker time/current curves
Series C F-frame circuit breakers
Catalog Types: EHD, FD and HFD circuit breakers, single-pole .
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 100A, 75°C above 125A) per terminal . Tested in open air .
Maximum Vac: 277 at 50/60 HzMaximum Vdc: 125
Notes:
1 Single-pole test data at 25°C based on NEMA procedures (AB 4-2003) for verifying performance of molded case circuit breakers .
Symmetrical RMS amperes (kA) DC Amps
FDHFD
277V 125VBreaker Type
Interrupting Rating (UL/CSA Listed)
110A See curve
Breaker rating
Continuous amperes Instantaneous trip, amperes
35 1065 10
29
Time Current Curves TC01200002EEffective March 2018
Series CF-Frame
EATON www.eaton.com
Interruptingratingdeterminesend of curve
Minimum Maximum
100
50
30
20
10
5
3
2
1
.5
.3
.2
.1
.05
.03
.02
.01
.005
.003
.002
.001
TIM
E IN
SE
CO
ND
S
1,000
500
300
200
5,000
3,000
2,000
1 HO
UR
1 MIN
UT
E2 H
OU
RS
1000
0
8000
6000
9000
7000
5000
4000
3000
2000
1000
800
600
900
700
500
400
300
200
1008060 907050403020109875 6
TIM
E IN
SE
CO
ND
S
10,000
100
50
30
20
10
5
3
2
1
.5
.3
.2
.1
.05
.03
.02
.01
.005
.003
.002
.001
1,000
500
300
200
5,000
3,000
2,000
1 H
OU
R1
MIN
UT
E2
HO
UR
S
CURRENT IN AMPERES
1000
0
8000
6000
9000
7000
5000
4000
3000
2000
1000
800
600
900
700
500
400
300
200
100
8060 907050403020109875 6
110A
Maximum single-pole trip timesat 25°C 1
CURRENT IN AMPERES
Maximuminterruptingtime
® F-frame circuit breakers
277 at 50/60 Hz 125
1010
DC amps
125V
Interruptingratingdeterminesend of curve
Minimum Maximum
100
50
30
20
10
5
3
2
1
.5
.3
.2
.1
.05
.03
.02
.01
.005
.003
.002
.001
TIM
E IN
SE
CO
ND
S
1,000
500
300
200
5,000
3,000
2,000
1 HO
UR
1 MIN
UT
E2 H
OU
RS
1000
0
8000
6000
9000
7000
5000
4000
3000
2000
1000
800
600
900
700
500
400
300
200
1008060 907050403020109875 6
TIM
E IN
SE
CO
ND
S
10,000
100
50
30
20
10
5
3
2
1
.5
.3
.2
.1
.05
.03
.02
.01
.005
.003
.002
.001
1,000
500
300
200
5,000
3,000
2,000
1 H
OU
R1
MIN
UT
E2
HO
UR
S
CURRENT IN AMPERES
1000
0
8000
6000
9000
7000
5000
4000
3000
2000
1000
800
600
900
700
500
400
300
200
100
8060 907050403020109875 6
125A
Maximum single-pole trip timesat 25°C 1
CURRENT IN AMPERES
Maximuminterruptingtime
® F-frame circuit breakers
For application and coordination purposes only.Based on 40˚C ambient, cold start. Connected with four (4) feet ofrated wire (60˚C up to 100A, 75˚C above 125A) per terminal.Tested in open air.
Maximum Vac: 277 at 50/60 Hz Maximum Vdc: 125
Breaker ratingContinuous amperes Instantaneous trip, amperes125A See curve
Single-pole test data at 25˚C based on NEMA procedures(AB 4-2003) for verifying performance of molded case circuit breakers.
Breakertype
Symmetrical Rms amperes (kA )
3565
FDHFD
1010
277V
DC amps
125V
Interrupting rating (UL/CSA listed)
Figure 26. Single Pole, Series C, Types FD and HFD 125A—Curve Number SC-4437-88A
Circuit breaker time/current curves
Series C F-frame circuit breakers
Catalog Types: FD and HFD circuit breakers, single-pole .
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 100A, 75°C above 125A) per terminal . Tested in open air .
Maximum Vac: 277 at 50/60 HzMaximum Vdc: 125
Notes:
1 Single-pole test data at 25°C based on NEMA procedures (AB 4-2003) for verifying performance of molded case circuit breakers .
Symmetrical RMS amperes (kA) DC Amps
FDHFD
277V 125VBreaker Type
Interrupting Rating (UL/CSA Listed)
125A See curve
Breaker rating
Continuous amperes Instantaneous trip, amperes
35 1065 10
30
Time Current Curves TC01200002EEffective March 2018
Series CF-Frame
EATON www.eaton.com
Interruptingratingdeterminesend of curve
Minimum Maximum
100
50
30
20
10
5
3
2
1
.5
.3
.2
.1
.05
.03
.02
.01
.005
.003
.002
.001
TIM
E IN
SE
CO
ND
S
1,000
500
300
200
5,000
3,000
2,000
1 HO
UR
1 MIN
UT
E2 H
OU
RS
1000
0
8000
6000
9000
7000
5000
4000
3000
2000
1000
800
600
900
700
500
400
300
200
1008060 907050403020109875 6
TIM
E IN
SE
CO
ND
S10,000
100
50
30
20
10
5
3
2
1
.5
.3
.2
.1
.05
.03
.02
.01
.005
.003
.002
.001
1,000
500
300
200
5,000
3,000
2,000
1 H
OU
R1
MIN
UT
E2
HO
UR
S
CURRENT IN AMPERES
1000
0
8000
6000
9000
7000
5000
4000
3000
2000
1000
800
600
900
700
500
400
300
200
100
8060 907050403020109875 6
150A
Maximum single-pole trip timesat 25°C 1
CURRENT IN AMPERES
Maximuminterruptingtime
Circuit breaker time/current curvesSeries C ® F-frame circuit breakersCatalog types FD and HFD circuit breakers, single-pole.For application and coordination purposes only.Based on 40˚C ambient, cold start. Connected with four (4) feet ofrated wire (60˚C up to 100A, 75˚C above 125A) per terminal. Tested in open air.
Maximum Vac: 277 at 50/60 HzMaximum Vdc: 125
Breaker ratingContinuous amperes Instantaneous trip, amperes150A See curve
Single-pole test data at 25˚C based on NEMA procedures(AB 4-2003) for verifying performance of molded case circuit breakers.
Breakertype
Symmetrical Rms amperes (kA )
3565
FDHFD
1010
277V
DC amps
125V
Interrupting rating (UL/CSA listed)
Figure 27. Single Pole, Series C, Types FD and HFD 150A—Curve Number SC-4438-88A
Circuit breaker time/current curves
Series C F-frame circuit breakers
Catalog Types: FD and HFD circuit breakers, single-pole .
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 100A, 75°C above 125A) per terminal . Tested in open air .
Maximum Vac: 277 at 50/60 HzMaximum Vdc: 125
Notes:
1 Single-pole test data at 25°C based on NEMA procedures (AB 4-2003) for verifying performance of molded case circuit breakers .
Symmetrical RMS amperes (kA) DC Amps
FDHFD
277V 125VBreaker Type
Interrupting Rating (UL/CSA Listed)
150A See curve
Breaker rating
Continuous amperes Instantaneous trip, amperes
35 1065 10
31
Time Current Curves TC01200002EEffective March 2018
Series CF-Frame
EATON www.eaton.com
0.01
0.10
1.00
10.00
100.00
1000.00
10000.00
10 100 1000 10000 100000 1000000
Tim
e in
Sec
onds
Current in Amperes
ED, EHD, FDB FD, HFD, FDC 15A 2, 3 & 4 pole
MaximumTolerance
MinimumTolerance
Circuit Breaker time/current curv es
Series C F-Frame Circuit BreakersCatalog Types: ED, EHD, FDB, FD, HFD, FDC
for two, three and four pole breakers
For application and coordination purposes only. Based on cold start at rated ambient temperature.Connected with four (4) feet of rated wire (60/75°C) per terminal with all poles wired in series. Tested in open air. Instantaneous tripping is single pole.
interruption rating and application determines end of curve
600V480V240V
Figure 28. Types ED, EHD, FDB, FD, FDC, and HFD 15A 2, 3 & 4 pole—Curve Number TC012036EN
AB DE-ION Circuit Breakers—two-, three-, and four-poles
32
Time Current Curves TC01200002EEffective March 2018
Series CF-Frame
EATON www.eaton.comEaton Corporation January 2012
0.01
0.10
1.00
10.00
100.00
1000.00
10000.00
10 100 1000 10000 100000 1000000
Tim
e in
Sec
onds
Current in Amperes
ED, EHD, FDB FD, HFD, FDC 20A 2, 3 & 4 pole
MaximumTolerance
MinimumTolerance
Circuit Breaker time/current curves
Series C F-Frame Circuit BreakersCatalog Types: ED, EHD, FDB, FD, HFD, FDC
for two, three and four pole breakers
For application and coordination purposes only. Based on cold start at rated ambient temperature.Connected with four (4) feet of rated wire (60/75°C) per terminal with all poles wired in series. Tested in open air. Instantaneous tripping is single pole.
interruption rating and application determines end of curve
600V480V240V
Figure 29. Types ED, EHD, FDB, FD, FDC, and HFD 20A 2, 3 & 4 pole—Curve Number TC012037EN
33
Time Current Curves TC01200002EEffective March 2018
Series CF-Frame
EATON www.eaton.comEaton Corporation January 2012
0.01
0.10
1.00
10.00
100.00
1000.00
10000.00
10 100 1000 10000 100000 1000000
Tim
e in
Sec
onds
Current in Amperes
ED, EHD, FDB FD, HFD, FDC 25A 2, 3 & 4 pole
MaximumTolerance
MinimumTolerance
Circuit Breaker time/current curves
Series C F-Frame Circuit BreakersCatalog Types: ED, EHD, FDB, FD, HFD, FDC
for two, three and four pole breakers
For application and coordination purposes only. Based on cold start at rated ambient temperature.Connected with four (4) feet of rated wire (60/75°C) per terminal with all poles wired in series. Tested in open air. Instantaneous tripping is single pole.
interruption rating and application determines end of curve
600V480V240V
Figure 30. Types ED, EHD, FDB, FD, FDC, and HFD 25A 2, 3 & 4 pole—Curve Number TC012038EN
34
Time Current Curves TC01200002EEffective March 2018
Series CF-Frame
EATON www.eaton.comEaton Corporation January 2012
0.01
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Tim
e in
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Current in Amperes
ED, EDH, EHD, FDB FD, HFD, FDC 30A 2, 3 & 4 pole
MaximumTolerance
MinimumTolerance
Circuit Breaker time/current curves
Series C F-Frame Circuit BreakersCatalog Types: ED, EHD,FDB, FD, HFD, FDC
for two, three and four pole breakers
For application and coordination purposes only. Based on cold start at rated ambient temperature.Connected with four (4) feet of rated wire (60/75°C) per terminal with all poles wired in series. Tested in open air. Instantaneous tripping is single pole.
interruption rating and application determines end of curve
600V480V240V
Figure 31. Types ED, EHD, FDB, FD, FDC, and HFD 30A 2, 3 & 4 pole—Curve Number TC012039EN
35
Time Current Curves TC01200002EEffective March 2018
Series CF-Frame
EATON www.eaton.comEaton Corporation January 2012
0.01
0.10
1.00
10.00
100.00
1000.00
10000.00
10 100 1000 10000 100000 1000000
Tim
e in
Sec
onds
Current in Amperes
ED, EHD, FDB FD, HFD, FDC 35A 2, 3 & 4 pole
MaximumTolerance
MinimumTolerance
Circuit Breaker time/current curves
Series C F-Frame Circuit BreakersCatalog Types: ED, EHD, FDB, FD, HFD, FDC
for two, three and four pole breakers
For application and coordination purposes only. Based on cold start at rated ambient temperature.Connected with four (4) feet of rated wire (60/75°C) per terminal with all poles wired in series. Tested in open air. Instantaneous tripping is single pole.
interruption rating and application determines end of curve
600V480V240V
Figure 32. Types ED, EHD, FDB, FD, FDC, and HFD 35A 2, 3 & 4 pole—Curve Number TC012040EN
36
Time Current Curves TC01200002EEffective March 2018
Series CF-Frame
EATON www.eaton.comEaton Corporation January 2012
0.01
0.10
1.00
10.00
100.00
1000.00
10000.00
10 100 1000 10000 100000 1000000
Tim
e in
Sec
onds
Current in Amperes
ED, EHD, FDB FD, HFD, FDC 40A 2, 3 & 4 pole
MaximumTolerance
MinimumTolerance
Circuit Breaker time/current curves
Series C F-Frame Circuit BreakersCatalog Types: ED, EHD, FDB, FD, HFD, FDC
for two, three and four pole breakers
For application and coordination purposes only. Based on cold start at rated ambient temperature.Connected with four (4) feet of rated wire (60/75°C) per terminal with all poles wired in series. Tested in open air. Instantaneous tripping is single pole.
interruption rating and application determines end of curve
600V480V240V
Figure 33. Types ED, EHD, FDB, FD, FDC, and HFD 40A 2, 3 & 4 pole—Curve Number TC012041EN
37
Time Current Curves TC01200002EEffective March 2018
Series CF-Frame
EATON www.eaton.comEaton Corporation January 2012
0.01
0.10
1.00
10.00
100.00
1000.00
10000.00
10 100 1000 10000 100000 1000000
Tim
e in
Sec
onds
Current in Amperes
ED, EHD, FDB FD, HFD, FDC 45A 2, 3 & 4 pole
MaximumTolerance
MinimumTolerance
Circuit Breaker time/current curves
Series C F-Frame Circuit BreakersCatalog Types: ED, EHD, FDB, FD, HFD, FDC
for two, three and four pole breakers
For application and coordination purposes only. Based on cold start at rated ambient temperature.Connected with four (4) feet of rated wire (60/75°C) per terminal with all poles wired in series. Tested in open air. Instantaneous tripping is single pole.
interruption rating and application determines end of curve
600V480V240V
Figure 34. Types ED, EHD, FDB, FD, FDC, and HFD 45A 2, 3 & 4 pole—Curve Number TC012042EN
38
Time Current Curves TC01200002EEffective March 2018
Series CF-Frame
EATON www.eaton.comEaton Corporation January 2012
0.01
0.10
1.00
10.00
100.00
1000.00
10000.00
10 100 1000 10000 100000 1000000
Tim
e in
Sec
onds
Current in Amperes
ED, EHD, FDB FD, HFD, FDC 50A 2, 3 & 4 pole
MaximumTolerance
MinimumTolerance
Circuit Breaker time/current curves
Series C F-Frame Circuit BreakersCatalog Types: ED, EHD, FDB, FD, HFD, FDC
for two, three and four pole breakers
For application and coordination purposes only. Based on cold start at rated ambient temperature.Connected with four (4) feet of rated wire (60/75°C) per terminal with all poles wired in series. Tested in open air. Instantaneous tripping is single pole.
interruption rating and application determines end of curve
600V480V240V
Figure 35. Types ED, EHD, FDB, FD, FDC, and HFD 50A 2, 3 & 4 pole—Curve Number TC012043EN
39
Time Current Curves TC01200002EEffective March 2018
Series CF-Frame
EATON www.eaton.comEaton Corporation January 2012
0.01
0.10
1.00
10.00
100.00
1000.00
10000.00
10 100 1000 10000 100000 1000000
Tim
e in
Sec
onds
Current in Amperes
ED, EHD, FDB FD, HFD, FDC 60A 2, 3 & 4 pole
MaximumTolerance
MinimumTolerance
Circuit Breaker time/current curves
Series C F-Frame Circuit BreakersCatalog Types: ED, EHD, FDB, FD, HFD, FDC
for two, three and four pole breakers
For application and coordination purposes only. Based on cold start at rated ambient temperature.Connected with four (4) feet of rated wire (60/75°C) per terminal with all poles wired in series. Tested in open air. Instantaneous tripping is single pole.
interruption rating and application determines end of curve
600V480V240V
Figure 36. Types ED, EHD, FDB, FD, FDC, and HFD 60A 2, 3 & 4 pole—Curve Number TC012044EN
40
Time Current Curves TC01200002EEffective March 2018
Series CF-Frame
EATON www.eaton.comEaton Corporation January 2012
0.01
0.10
1.00
10.00
100.00
1000.00
10000.00
10 100 1000 10000 100000 1000000
Tim
e in
Sec
onds
Current in Amperes
ED, EHD, FDB FD, HFD, FDC 70A 2, 3 & 4 pole
MaximumTolerance
MinimumTolerance
Circuit Breaker time/current curves
Series C F-Frame Circuit BreakersCatalog Types: ED, EHD, FDB, FD, HFD, FDC
for two, three and four pole breakers
For application and coordination purposes only. Based on cold start at rated ambient temperature.Connected with four (4) feet of rated wire (60/75°C) per terminal with all poles wired in series. Tested in open air. Instantaneous tripping is single pole.
interruption rating and application determines end of curve
600V480V240V
Figure 37. Types ED, EHD, FDB, FD, FDC, and HFD 70A 2, 3 & 4 pole—Curve Number TC012045EN
41
Time Current Curves TC01200002EEffective March 2018
Series CF-Frame
EATON www.eaton.comEaton Corporation January 2012
0.01
0.10
1.00
10.00
100.00
1000.00
10000.00
10 100 1000 10000 100000 1000000
Tim
e in
Sec
onds
Current in Amperes
ED, EHD, FDB FD, HFD, FDC 80A 2, 3 & 4 pole
MaximumTolerance
MinimumTolerance
Circuit Breaker time/current curves
Series C F-Frame Circuit BreakersCatalog Types: ED, EHD, FDB, FD, HFD, FDC
for two, three and four pole breakers
For application and coordination purposes only. Based on cold start at rated ambient temperature.Connected with four (4) feet of rated wire (60/75°C) per terminal with all poles wired in series. Tested in open air. Instantaneous tripping is single pole.
interruption rating and application determines end of curve
600V480V240V
Figure 38. Types ED, EHD, FDB, FD, FDC, and HFD 80A 2, 3 & 4 pole—Curve Number TC012046EN
42
Time Current Curves TC01200002EEffective March 2018
Series CF-Frame
EATON www.eaton.com
Eaton Corporation January 2012
0.01
0.10
1.00
10.00
100.00
1000.00
10000.00
10 100 1000 10000 100000 1000000
Tim
e in
Sec
onds
Current in Amperes
ED, EHD, FDB FD, HFD, FDC 90A 2, 3 & 4 pole
MaximumTolerance
MinimumTolerance
Circuit Breaker time/current curves
Series C F-Frame Circuit BreakersCatalog Types: ED, EHD, FDB, FD, HFD, FDC
for two, three and four pole breakers
For application and coordination purposes only. Based on cold start at rated ambient temperature.Connected with four (4) feet of rated wire (60/75°C) per terminal with all poles wired in series. Tested in open air. Instantaneous tripping is single pole.
Series C F-Frame Circuit BreakersEDH, EDC, EHD, Catalog Types: ED, EDB, EDS,
FDB, FD, HFD, FDCfor two, three and four pole breakers
For application and coordination purposes only. Based on cold start at rated ambient temperature.Connected with four (4) feet of rated wire (60/75°C) per terminal with all poles wired in series. Tested in open air. Instantaneous tripping is single pole.
interruption rating and application determines end of curve
Circuit Breaker time/current curves
Series C F-Frame Circuit BreakersCatalog Types: ED, EDB, EDS, EDH, EDC, EHD,
FDB, FD, HFD, FDCfor two, three and four pole breakers
For application and coordination purposes only. Based on cold start at rated ambient temperature.Connected with four (4) feet of rated wire (60/75 °C) per terminalwith all poles wired inseries. Tested in open air. Instantaneous tripping is single pole.
Maximum Vac: 600V at 50/60HzMaximum Vdc: 250V
Breaker Rating Continuous Amps Instantaneous trip amperes 150A see curve
Series C F-Frame Circuit BreakersEDH, EDC, EHD, Catalog Types: ED, EDB, EDS,
FDB, FD, HFD,FDCfor two, three and four pole breakers
For application and coordination purposes only. Based on cold start at rated ambient temperature.Connected with four (4) feet of rated wire (60/75°C) per terminal with all poles wired in series. Tested in open air. Instantaneous tripping is single pole.
Series C F-Frame Circuit BreakersEDH, EDC, EHD, Catalog Types: ED, EDB, EDS,
FDB, FD, HFD,FDCfor two, three and four pole breakers
For application and coordination purposes only. Based on cold start at rated ambient temperature.Connected with four (4) feet of rated wire (60/75°C) per terminal with all poles wired in series. Tested in open air. Instantaneous tripping is single pole.
Series C F-Frame Circuit BreakersEDH, EDC, EHD, Catalog Types: ED, EDB, EDS,
FDB, FD, HFD, FDCfor two, three and four pole breakers
For application and coordination purposes only. Based on cold start at rated ambient temperature.Connected with four (4) feet of rated wire (60/75°C) per terminal with all poles wired in series. Tested in open air. Instantaneous tripping is single pole.
