Time Current Curves TD012038EN
Effective April 2014
Series C RD-Frame
800-2500A, 240-600V
Contents
DescriptionPage
Catalog Number Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Digitrip RMS 510/610/810 Electronic Trip Unit types RD, CRD, RDC, CRDC
Typical Instantaneous Time-Phase Current Characteristic Curve Based on In . . . . . . . . . . . . SC-5626-93 . . . . . . . . . 4
Typical Long Delay/Short Delay Time-Phase Current Characteristic Curve Based on In . . . . SC-5627-93 . . . . . . . . . 5
Typical Ground Fault/Protection Time/Current Characteristic Curve Based on In . . . . . . . . . . SC-5628-93 . . . . . . . . 6
Digitrip OPTIM Electronic Trip Unit with 1600/2000A frame
Long Delay I2T, Short Delay I2T . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SC-6336-96 . . . . . . . . . 7
Long Delay I2T, Short Delay Flat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SC-6337-96 . . . . . . . . 8
Long Delay I4T, Short Delay Flat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SC-6338-96 . . . . . . . . . 9
Instantaneous and Override, 1600 Amperes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SC-6342-96 . . . . . . . . 10
Instantaneous and Override, 2000 Amperes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SC-6343-96 . . . . . . . . 11
Ground Fault or Ground Fault Alarm Only, 1600 Amperes . . . . . . . . . . . . . . . . . . . . . . . . . . SC-6345-96 . . . . . . . . 12
Ground Fault or Ground Fault Alarm Only, 2000 Amperes . . . . . . . . . . . . . . . . . . . . . . . . . . SC-6346-96 . . . . . . . . 13
Digitrip OPTIM Electronic Trip Unit with 2500A frame
Long Delay I2T, Short Delay I2T . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SC-6339-96 . . . . . . . .
Long Delay I2T, Short Delay Flat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SC-6340-96 . . . . . . .
Long Delay I4T, Short Delay Flat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SC-6341-96 . . . . . . . .
Instanteneous and Override . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SC-6344-96 . . . . . . . .
Ground Fault or Ground Fault Alarm Only . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SC-6347-96 . . . . . . . .
14
15
16
17
18
Note:
Time/Current characteristic curves for Series C R-frame circuit breakers--voltages shown in curve headings are
maximum at which the breaker may be applied. Interrupting capacity of inidvidual breaker is tabulated on each curve.
Note:
The following curves are UL489 Listed for use in North America.
The following circuit breakers are derived from Eaton, Westinghouse, or Cutler-Hammer history.
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.
Time Current Curves TD012038EN
Series C
R-Frame

Effective April 2014
Notee: Unless noted below, all curves remain unchanged from their prior revision .
Revision
2
Curve Number
eaton www.eaton.com
Page
Date
Time Current Curves TD012038EN
Series C
R-Frame
Effective April 2014
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.
Table 1. Circuit Breaker/Frame
RD 3 16 T53 W
Circuit Breaker/
Frame Type
RD
RDC
CRD 2
CRDC 2
Number of Poles
3 = Three-pole
4 = Four-pole
Circuit Breaker/Frame
Ampere Rating
16 = 1600 amperes
20 = 2000 amperes
25 = 2500 amperes
Trip Type
T53
T65
T86
T96
T106
T107
1
= Digitrip RMS 510 LS
= Digitrip RMS 610 LSG
= Digitrip RMS 810 LSIG
= Digitrip RMS 910 LSIG
= Digitrip OPTIM 1050 LSIG
= Digitrip OPTIM 1050 LSIA
Suffix
W
P
R
K
= Without terminals
= 100% protected neutral pole
= Ground fault remote (310 only)
= Molded case switch
Notes
1 For complete list of available trip types, refer to Pages V4-T2-233 to V4-T2-242.
2 No Four0pole for CRD and CRDC.
eaton www.eaton.com
3
Time Current Curves TD012038EN
Series C
R-Frame

Effective April 2014
Types RD, CRD, RDC, CRDC Equipped With Digitrip RMS 510/610/810 Trip Units. Typical
Instantaneous Time-Phase Current Characteristic Curve Based on In
I M P O R T A N T
Series C R-Frame Circuit Breakers with
TRIP UNITS ARE NOT AVAILABLE WITH ONLY
INSTANTANEOUS PROTECTION. THIS CURVE MUST BE
USED in conjunction WITH Curve No. SC-5627-93 for LONG
DELAY (and if applicable SHORT DELAY) PROTECTION to
obtain the complete time-current characteristic.
DIGITRIP RMS 510/610/810 Trip Units
Typical Instantaneous Time-Phase Current Characteristic Curve (I)
Available Rating Plugs Marked 50/60 Hz
Maximum
Ampere
Rating
CURRENT IN MULTIPLES OF PLUG RATING I n
1000
900
800
700
600
500
.05
.07
.2
.1
.3
.4
.5
.7
1
2
3
4
5
7
20
10
30
400
300
1600
1600
1600
1600
1600
40 50
2000
2000
2000
2000
2000
2500 7
2500 7
2500 7
70
Ampere
Rating
(In)
Frequency 5
Hz
1600
1250 6
1200
1000
800
2000
1600
1250 6
1200
1000
2500
2000
1600
50/60
50
50/60
50/60
50/60
50/60
50/60
50
50/60
50/60
50/60
50/60
50/60
Catalog
Number
RP6R16A160
RP6R16A125
RP6R16A120
RP6R16A100
RP6R16A080
1000
RP6R20A200
900
RP6R20A160
800
700
RP6R20A125
600
RP6R20A120
500
RP6R20A100
400
RP6R25A250
RP6R25A200
300
RP6R25A160
200
200
Interrupting Rating
100
90
80
70
60
50
Breaker Type
RD, CRD
RDC, CRDC
40
30
Breaker Type
20
RD, CRD
RDC, CRDC
7
M1
M2
3
65
100
50
65
70
60
50
4050/60 Hz
IEC 60947-2 rms Sym. kA,
220-240V
380-415V 30500V
125
200
65
100
20
1
10
9
8
7
6
5
4
125
200
2
Tolerances 8
10
9
8
7
6
5
INST Range = 90% to 110% of setting
4
3
Notes:
2
50
65
Utilization Category A
Ics = 0.5 Icu
Uimp = 8kV
TIME IN SECONDS
TIME IN SECONDS
9
M2
UL/CSA rms Sym. kA, 50/60
Hz
100
240V
480V
600V90
80
2
1For 2000A Rating Plug.
2For 2500A Rating Plug.
1
.9
.8
.7
.6
.5
.4
.3
.2
3
2
Available
Instantaneous
Settings
2, 2.5, 3, 4, 5, 6, M1 or M2 x In
3For 800-1600A Rating Plugs.
5
4
2.5
1
6
8
M1
Values for M1 and M2 as marked on Rating Plug
Plug Rating (I n )
800-1600 A
2000 A
2500 A
1
.9
.8
4The end of the curve is determined by the interrupting
rating of the circuit breaker.
.7
See above tabulation.
.6
3
.5
5The Rating Plug is for 50 and 60 Hz applications.
.4
6Not UL/CSA listed.
M1
M2
8 x In
8 x In
7 x In
10 x In
9 x In
7 x In
.3
7 For Types RD and RDC only.
.2
10
M2
8 Curves apply from –20°C to +55°C ambient. Temperatures above 95°C cause automatic
trip. For possible ampere derating for ambient above 40°C, refer to Eaton.
3
.1
.09
.08
.07
.06
.05
.1
.09
.08
.07
.06
.05
.04
.04
.03
Application
Determines
End of Curve
.02
.01
.05
.07
.1
.2
.3
.4
.5
.7
1
2
3
4
5
7
10
20
30
40
50
70
.03
4
.02
.01
CURRENT IN MULTIPLES OF PLUG RATING I n
Figure 1. Typical Instantaneous Time-Phase Current Characteristic Curve Based on In - Curve Number SC-5626-93, October 1997
4
eaton www.eaton.com
Time Current Curves TD012038EN
Series C
R-Frame
Effective April 2014
Types RD, CRD, RDC, CRDC Equipped With Digitrip RMS 510/610/810 Trip Units. Typical
Long Delay/Short Delay Time-Phase Current Characteristic Curve Based on Ir
Series C R-Frame Circuit Breakers with
DIGITRIP RMS 510/610/810 Trip Units
Typical Long Delay and Short Delay
Time-Phase Current Characteristic Curve (LS)
Available Rating Plugs Marked 50/60 Hz
Maximum
Ampere
Rating
1000
900
800
700
600
500
.05
.07
CURRENT IN MULTIPLES OF LONG DELAY SETTINGS I r
.4 .5
.7
1
2
4
3
5 6
8 10
.2
.1
1600
1600
1600
1600
1600
2000
2000
2000
2000
2000
30 2500 7
2500 7
2500 7
20
.3
Available
Long Delay (Ir)
Settings
.5, .6, .7, .8, .85, .9, .95 or 1 x In = Ir
Ampere
Rating
(In)
Frequency 5
Hz
Catalog
Number
1600
1250 6
1200
1000
800
2000
1600
1250 6
1200
1000
2500
2000
1600
50/60
50
50/60
50/60
50/60
50/60
50/60
50
50/60
50/60
50/60
50/60
50/60
RP6R16A160
RP6R16A125
RP6R16A120
RP6R16A100
RP6R16A080
RP6R20A200
RP6R20A160
RP6R20A125
RP6R20A120
RP6R20A100
RP6R25A250
1000
RP6R25A200
900
800
RP6R25A160
700
600
500
Interrupting Rating
400
300
Maximum
Total
Clearing
Time
200
Breaker Type
RD, CRD
RDC, CRDC
100
90
80
70
60
50
400
UL/CSA rms Sym. kA, 50/60300
Hz
240V
480V
600V
125
200
65
100
50
65
200
IEC 60947-2 rms Sym. kA, 50/60 Hz
100
220-240V
380-415V
500V
90
Breaker Type
RD, CRD
RDC, CRDC
125
200
80
65
100
50
70
65
60
Utilization
Category A
50
Ics
= 0.5 Icu
40
Uimp = 8kV
40
30
30
Tolerances 8
Minimum
Total
Clearing
Time
24
10
9
8
7
6
5
7
8
S2
4
6
4
2.5
3
Available
Long Delay
Time
Settings 1
Shown
@ 6 x Ir
2, 4, 7, 10, 12,
15, 20, 24
10
9
8
7
1Long Time Memory function automatically shortens long time delay as overload
6
2With zone interlocking on short delay utilized and no5 restraining signal, the
Notes:
2
2
2
3
1
.9
.8
.7
.6
.5
2.5
.5*
.4
.3
.3*
5
Available
Short Delay
Settings
2, 2.5, 3, 4, 5, 6,
S1(7) or S2(8) x Ir
6
4
2
7
S1
.3
2
Available
I2t Shape
Short Delay Time
Settings
Indicated by *
.1
.09
.08
.07
.06
.05
SDM
SDM
.1*
.1
2
.8
.7
2
.4
2
.2
2
Application
Determines
End of Curve
2
.6
.5
.5
.5
.5
.4
.3
2
.2
.3
.2
3
.1
Available Flat .4
Response
.3
Short Delay
Time Settings
.1, .2, .3, .4, or .5.2
.4
.2
.1
.1
.09
.08
.07
Fixed
.06
Instantaneous.054
Override
.04
.04
.03
.03
.02
.02
.01
.05
conditions recur.
minimum time band SDM applies – regardless of setting.
4 rating of the circuit
3The end of the curve is determined by the interrupting
breaker. See above tabulation.
3
4For high fault current levels a fixed instantaneous override is provided at
17,500A (Tolerance ± 15%).
5 The Rating Plug is for 50 and 60 Hz applications. 2
6Not UL/CSA listed.
7 For Types RD and RDC only.
8 Curves apply from –20°C to +55°C ambient. Temperatures above 95°C cause automatic
1
trip. For possible ampere derating for ambient above.9 40°C, refer to Eaton.
4
2
20
LDS Range = 150% to 130% of Setting.
LDT Range = 67% to 100% of Setting, at 6 x Ir .
SDS Range = 90% to 110% of Setting.
TIME IN SECONDS
TIME IN SECONDS
20
.07 .1
2
3 .2
4
.35
.4 7 .5
1 0 .7
1
20
2
3
4
5
6
8
10
IMPORTANT
20
30
40
.01
10
20
30
40
CURRENT IN kA
50
.01
70
CURRENT IN MULTIPLES OF LONG DELAY SETTINGS I r
Figure 2. Typical Long Delay/Short Delay Time-Phase Current Characteristic Curve Based on In - Curve Number SC-5627-93,
October 1997
eaton www.eaton.com
5
Time Current Curves TD012038EN
Series C
R-Frame

Effective April 2014
Types RD, CRD, RDC, CRDC Equipped With Digitrip RMS 510/610/810 Trip Units. Typical
Ground Fault/Protection Time/Current Characteristic Curve Based on In
Series C R-Frame Circuit Breakers with
DIGITRIP RMS 510/610/810 Trip Units
CURRENT IN MULTIPLES OF PLUG RATING I n
.05
.07
.1
.3
.4
.5
.7
1
2
3
4
5
7
1
Typical
Current2Characteristic
Curve
(G)
.2
.4 .5
.3 Time-Ground
.7
1
4
3
5
7
10
1000
900
800
700
600
500
Ground Fault Settings (Amperes) ➁➂➃
Code
600
500
A
K
400
300
Available
Ground Fault
Settings (Typical)
for Exact Values
and Tolerances of
Letter Codes,
See Chart
In plug ratings available
1000
900
800
700
.2
200
A➄
B➄
C➄
D➄
E
F
H
K
800
200
240
280
320
400
480
600
800
1000
250
300
350
400
500
600
750
1000
1200
300
360
420
480
600
720
900
1200
400
1250
312
375
438
500
625
750
938
1200
300
1600
400
480
560
640
800
960
1200
1200
2000
500
600
700
800
1000
1200
1200
1200
2500
625
750
875
1000
1200
1200
1200
1200
200
Notes:
100
90
80
70
60
50
100
90
80 signal, the minimum time
1With zone interlocking on ground fault utilized and no restraining
70
band GDM applies – regardless of setting.
60
50 shown in chart.
2 Except as noted tolerances on current levels are ± 10% of values
40
40
3The rating plug is for 50 Hz and 60 Hz, applications.
30
30
4All tabulated values are based on the use of a residual sensing scheme with the same
rated current sensor in all phase and neutral conductors.
20
20
10
9
8
7
6
5
10
9
8
7
6
5
4
4
3
3
TIME IN SECONDS
TIME IN SECONDS
5For Testing Purposes Only: When using an external single phase current source to check
low level ground fault current settings, it is advisable to use the Auxiliary Power Module
(APM). See TEST PROCEDURES in Instruction Leaflet.
D
2
2
B
I t Shape for Ground
Time Delay Settings Indicated by *
2
1
.9
.8
.7
.6
.5
1
.9
.8
.7
.6
.5
A
.5
.4
.4
.3
.3
.2
.2
1
1
1
1
Available
Ground Fault
Time Delay
Settings
Flat Response
GDM
.1
.09
.08
.07
.06
.05
.1
.5*
1
.3*
1
.4
Available
Ground Fault
Time Delay
Settings
I2t Response
.3
.2
GDM
.1*
1
.1
.09
.08
.07
1
.06
.05
.04
.04
.03
.03
.02
.02
.01
.05
.07
.1
.2
.3
.4
.5
.7
1
2
3
4
5
7
1
.2
.3
.4
.5
.7
1
2
3
4
5
7
10
.01
CURRENT IN MULTIPLES OF PLUG RATING I n
Figure 3. Typical Ground Fault/Protection Time/Current Characteristic Curve Based on In - Curve Number SC-5628-93,
October 1997
6
eaton www.eaton.com
Time Current Curves TD012038EN
Series C
R-Frame
Effective April 2014
R-Frame Circuit Breakers Equipped with 1600/2000A Digitrip OPTIM Trip Units; Long Delay I2t, Short Delay I2t
1 HOUR
40
50
60
70
80
90
100
30
20
5
6
7
8
9
10
3
2
0.6
0.7
0.8
0.9
1
10,000
0.5
2 HOURS
CURRENT IN MULTIPLES OF LONG DELAY SETTING I r
Available Long Delay
Pickup Settings (Ir )
0.5 to 1 x I n = I r
in 0.01 increments
5,000
Circuit Breaker Time/Current Curves (Phase Current)
Series C R - Frame Circuit Breakers
Equipped With 1600/2000A Digitrip Optim Trip Units
3,000
Response: LONG DELAY I2t, SHORT DELAY I2t
2,000
Available Rating Plugs
1,000
Maximum
Total
Clearing
Time
500
300
Rating Plug
Catalog
Number
Long Delay
Pickup Range
0.4 to 1 x In
Amperes
Short Delay
Pickup Range
1.5 to 8 x Ir
Amperes
1600
1600
1600
1600
1600
2000
2000
2000
2000
2000
1600
1250
1200
1000
800
2000
1600
1250
1200
1000
ORPL16A160
ORPL16A125
ORPL16A120
ORPL16A100
ORPL16A080
ORPL20A200
ORPL20A160
ORPL20A125
ORPL20A120
ORPL20A100
640 -1600
500 -1250
480 -1200
400 -1000
320 - 800
800 -2000
640 -1600
500 -1250
480 -1200
400 -1000
960 - 12800
750 - 10000
720 - 9600
600 - 8000
480 - 6400
1200 - 16000
960 - 12800
750 - 10000
720 - 9600
600 - 8000
Interrupting Rating
100
UL/CSA rms Sym. kA, 50/60 Hz
240V
480V
600V
Breaker Type
50
30
20
Minimum
Total
Clearing
Time
24
RD, CRD
RDC, CRDC
125
200
Breaker Type
IEC 60947-2 rms Sym. kA, 50/60 Hz
240V
415V
690V
7
5
4
Available
Long Delay
Time Settings
Shown @ 6 x I r
2-24 seconds +0 ⁄-30%
in 0.1 second
increments
65
100
50
65
Icu
Ics
Icu
135
100
70
200
100
100
U IMP = 8kV RD, CRD
RDC, CRDC
10
Ics
50
50
Icu
Ics
25
13
35
18
Utilization Category A
Notes:
1.For field testing primary injection methods, follow NEMA AB4 guidelines.
2.Calibration response in short delay pickup range is the same for 1, 2, or 3 poles in series.
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 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
2
2
Available
Short Delay
Pickup Settings
1.5 to 8 x Ir
±5% in 0.1
increments
1
.5
1
5.This curve is shown as a multiple of the Long Delay Pickup Setting, (Ir). This Ir setting is
programmed in primary value amperes via a Breaker Interface Module, or OPTIMizer,
or a Remote PC (IMPACC System).
.5
6.The Long Delay Pickup Point (indicated by a flashing LED on the product).5 nominally occurs
above 115% of the Ir current, with a +/- 5% tolerance. The short delay settings have conventional
100%, +/- 5% as the pickup points.
.3
7.For additional curve tolerances contact Eaton.
.3
NDS
.3
4.The end of the curve is determined by the interrupting rating of the circuit breaker.
See above tabulation.
8. Total clearing times shown include the response times of the trip unit, the breaker opening,
.2
and the quenching of the arcing current.
.2
Application
Determines
End of Curve
.1
.1
.1
Available I2t Slope
Short Delay Time Settings
0.1 to 0.5 seconds in
0.01 second increments
.05
.05
6000
7000
8000
9000
10,000
4000
5000
3000
2000
500
600
700
800
900
1000
300
50
60
70
80
90
100
40
30
20
5
.01
6
7
8
9
10
.01
4
.02
3
.02
2
.03
0.5
0.6
0.7
0.8
0.9
1
.03
400
T IME IN S E C ONDS
Ampere
Rating
(In)
200
1 MINUT E
200
Maximum
Ampere
Rating
CURRENT IN MULTIPLES OF LONG DELAY SETTING I r
Figure 4. Long Delay I2T, Short Delay I2T - Curve Number SC-6336-96, October 1997
eaton www.eaton.com
7
Time Current Curves TD012038EN
Series C
R-Frame

Effective April 2014
R-Frame Circuit Breakers Equipped with 1600/2000A Digitrip OPTIM Trip Units; Long Delay I2t, Short Delay Flat
50
60
70
80
90
100
40
30
20
5
6
7
8
9
10
3
2
0.5
0.6
0.7
0.8
0.9
1
10,000
Available
Long Delay (Ir )
Settings
0.5 to 1 x I n = I r
in 0.01 increments
5,000
Circuit Breaker Time/Current Curves (Phase Current)
Series C R - Frame Circuit Breakers
Equipped With 1600/2000A Digitrip Optim Trip Units
3,000
Response: LONG DELAY I2t, SHORT DELAY FLAT
2,000
Available Rating Plugs
1,000
Maximum
Total
Clearing
Time
500
300
1 MINUT E
200
Ampere
Rating
(In)
Rating Plug
Catalog
Number
Long Delay
Pickup Range
0.4 to 1 x In
Amperes
Short Delay
Pickup Range
1.5 to 8 x Ir
Amperes
1600
1600
1600
1600
1600
2000
2000
2000
2000
2000
1600
1250
1200
1000
800
2000
1600
1250
1200
1000
ORPL16A160
ORPL16A125
ORPL16A120
ORPL16A100
ORPL16A080
ORPL20A200
ORPL20A160
ORPL20A125
ORPL20A120
ORPL20A100
640 -1600
500 -1250
480 -1200
400 -1000
320 - 800
800 -2000
640 -1600
500 -1250
480 -1200
400 -1000
960 - 12800
750 - 10000
720 - 9600
600 - 8000
480 - 6400
1200 - 16000
960 - 12800
750 - 10000
720 - 9600
600 - 8000
Interrupting Rating
100
UL/CSA rms Sym. kA, 50/60 Hz
240V
480V
600V
Breaker Type
50
30
20
Minimum
Total
Clearing
Time
24
RD, CRD
RDC, CRDC
125
200
Breaker Type
IEC 60947-2 rms Sym. kA, 50/60 Hz
240V
415V
690V
Available
Long Delay
Time Settings
Shown @ 6 x I r
2-24 seconds +0 ⁄-30%
in 0.1 second
increments
7
5
4
65
100
50
65
Icu
Ics
Icu
135
100
70
200
100
100
U IMP = 8kV RD, CRD
RDC, CRDC
10
T IME IN S E C ONDS
Maximum
Ampere
Rating
Ics
50
50
Icu
Ics
25
13
35
18
Utilization Category A
Notes:
1.For field testing primary injection methods, follow NEMA AB4 guidelines.
2.Calibration response in short delay pickup range is the same for 1, 2, or 3 poles in series.
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 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
2
2
Available
Short Delay
Pickup Settings
1.5 to 8 x Ir
±5% in 0.1
increments
1
.5
.3
4.The end of the curve is determined by the interrupting rating of the circuit breaker.
See above tabulation.
1
5.This curve is shown as a multiple of the Long Delay Pickup Setting, (Ir). This Ir setting is
programmed in primary value amperes via a Breaker Interface Module, or OPTIMizer,
or a Remote PC (IMPACC System).
.5
6.The Long Delay Pickup Point (indicated by a flashing LED on the product)
nominally occurs
.5
above 115% of the Ir current, with a +/- 5% tolerance. The short delay settings have conventional
100%, +/- 5% as the pickup points.
.3
7.For additional curve tolerances contact Eaton.
.3
8. Total clearing times shown include the response times of the trip unit, the breaker opening,
.2
and the quenching of the arcing current.
.2
Application
Determines
End of Curve
.1
.1
.1
.05
.05
Available Flat
Short Delay Time Settings
0.1 to 0.5 seconds
in 0.01 second increments
.03
.03
CURRENT IN MULTIPLES OF LONG DELAY SETTING I r
Figure 5. Long Delay I2T, Short Delay Flat - Curve Number SC-6337-96, October 1997
8
eaton www.eaton.com
4000
5000
3000
2000
500
600
700
800
900
1000
300
400
200
60
70
80
90
100
50
40
30
20
5
6
7
8
9
10
4
.01
3
.01
2
.02
0.5
0.6
0.7
0.8
0.9
1
.02
6000
7000
8000
9000
10,000
1 HOUR
2 HOURS
CURRENT IN MULTIPLES OF LONG DELAY SETTING I r
Time Current Curves TD012038EN
Series C
R-Frame
Effective April 2014
R-Frame Circuit Breakers Equipped with 1600/2000A Digitrip OPTIM Trip Units; Long Delay I4t, Short Delay Flat
40
50
60
70
80
90
100
30
20
5
6
7
8
9
10
3
2
0.6
0.7
0.8
0.9
1
0.5
10,000
Available Long Delay
Pickup Settings (Ir)
0.5 to 1 x I n = I r
in 0.01 increments
5,000
Circuit Breaker Time/Current Curves (Phase Current)
Series C R - Frame Circuit Breakers
Equipped With 1600/2000A Digitrip Optim Trip Units
3,000
Response: LONG DELAY I2t, SHORT DELAY FLAT
2,000
Maximum
Total
Clearing
Time
Available Rating Plugs
1,000
500
300
Ampere
Rating
(In)
Rating Plug
Catalog
Number
Long Delay
Pickup Range
0.4 to 1 x In
Amperes
Short Delay
Pickup Range
1.5 to 8 x Ir
Amperes
1600
1600
1600
1600
1600
2000
2000
2000
2000
2000
1600
1250
1200
1000
800
2000
1600
1250
1200
1000
ORPL16A160
ORPL16A125
ORPL16A120
ORPL16A100
ORPL16A080
ORPL20A200
ORPL20A160
ORPL20A125
ORPL20A120
ORPL20A100
640 -1600
500 -1250
480 -1200
400 -1000
320 - 800
800 -2000
640 -1600
500 -1250
480 -1200
400 -1000
960 - 12800
750 - 10000
720 - 9600
600 - 8000
480 - 6400
1200 - 16000
960 - 12800
750 - 10000
720 - 9600
600 - 8000
Interrupting Rating
100
UL/CSA rms Sym. kA, 50/60 Hz
240V
480V
600V
Breaker Type
50
30
RD, CRD
RDC, CRDC
125
200
Breaker Type
IEC 60947-2 rms Sym. kA, 50/60 Hz
240V
415V
690V
RD, CRD
RDC, CRDC
T IME IN S E C ONDS
50
65
Icu
Ics
Icu
135
100
70
200
100
100
U IMP = 8kV 20
10
65
100
Ics
50
50
Icu
Ics
25
13
35
18
Utilization Category A
Notes:
5
1.For field testing primary injection methods, follow NEMA AB4 guidelines.
2.Calibration response in short delay pickup range is the same for 1, 2, or 3 poles in series.
5
3
2
1
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 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.
Available
Long Delay
Time Settings
Shown @ 6 x I r
1-5 seconds +10 ⁄-40%
in 0.1 second
increments
Available
Short Delay
Pickup Settings
1.5 to 8 x Ir
±5% in 0.1
increments
1
.5
.5
.3
4.The end of the curve is determined by the interrupting rating of the circuit breaker.
See above tabulation.
1
5.This curve is shown as a multiple of the Long Delay Pickup Setting, (Ir). This Ir setting is
programmed in primary value amperes via a Breaker Interface Module, or OPTIMizer,
or a Remote PC (IMPACC System).
6.The Long Delay Pickup Point (indicated by a flashing LED on the product).5nominally occurs
above 115% of the Ir current, with a +/- 5% tolerance. The short delay settings have conventional
100%, +/- 5% as the pickup points.
.3
7.For additional curve tolerances contact Eaton.
T IME IN S E C ONDS
1 MINUT E
200
Minimum
Total
Clearing
Time
Maximum
Ampere
Rating
8. Total clearing times shown include the response times of the trip unit, the
.2 breaker opening,
and the quenching of the arcing current.
.2
Application
Determines
End of Curve
.1
.1
.1
.05
.05
Available Flat
Short Delay Time Settings
0.1 to 0.5 seconds
in 0.01 second increments
.03
.03
4000
5000
3000
2000
500
600
700
800
900
1000
300
400
200
50
60
70
80
90
100
40
30
20
5
6
7
8
9
10
4
.01
3
.01
2
.02
0.5
0.6
0.7
0.8
0.9
1
.02
6000
7000
8000
9000
10,000
1 HOUR
2 HOURS
CURRENT IN MULTIPLES OF LONG DELAY SETTING I r
CURRENT IN MULTIPLES OF LONG DELAY SETTING I r
Figure 6. Long Delay I4T, Short Delay Flat - Curve Number SC-6338-96, October 1997
eaton www.eaton.com
9
Time Current Curves TD012038EN
Series C
R-Frame

Effective April 2014
R-Frame Circuit Breakers Equipped with 1600A Digitrip OPTIM Trip Units; Instantaneous and Override
40
50
60
70
80
90
100
30
20
5
6
7
8
9
10
4
3
10,000
2
1
2 HOURS
CURRENT IN MULTIPLES OF PLUG RATING I n
Circuit Breaker Time/Current Curves (Phase Current)
Series C R - Frame Circuit Breakers
Equipped With 1600A Digitrip Optim Trip Units
Response: INSTANTANEOUS AND OVERRIDE
1 HOUR
5,000
Available Rating Plugs
3,000
2,000
1,000
Ampere
Rating
(In)
Rating Plug
Catalog
Number
Instantaneous
Pickup Range
2 to 10 x In
Amperes
Override
Amperes
1600
1600
1600
1600
1600
1600
1250
1200
1000
800
ORPL16A160
ORPL16A125
ORPL16A120
ORPL16A100
ORPL16A080
3200 -16000
2500 -12500
2400 -12000
2000 -10000
1600 - 8000
14875 -20125
14875 -20125
14875 -20125
14875 -20125
14875 -20125
Interrupting Rating
500
UL/CSA rms Sym. kA, 50/60 Hz
240V
480V
600V
Breaker Type
300
200
100
1 MINUTE
Maximum
Ampere
Rating
RD, CRD
RDC, CRDC
125
200
65
100
50
65
Breaker Type
IEC 60947-2 rms Sym. kA, 50/60 Hz
240V
415V
690V
Icu
Ics
Icu
135
100
70
200
100
100
U IMP = 8kV RD, CRD
RDC, CRDC
Ics
50
50
Icu
Ics
25
13
35
18
Utilization Category A
Notes:
50
1.For field testing primary injection methods, follow NEMA AB4 guidelines.
30
2.Calibration response in short delay pickup range is the same for 1, 2, or 3 poles in series.
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 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.
20
4.The end of the curve is determined by the interrupting rating of the circuit breaker.
See above tabulation.
5
5.The instantaneous settings have conventional 100%, +/- 10% as the pickup points.
6.For additional curve tolerances contact Eaton.
3
7. Total clearing times shown include the response times of the trip unit, the breaker opening,
and the quenching of the arcing current.
2
1
2
1
Available Instantaneous
Pickup Settings
2 to 10 x In ± 10%
In 0.1 Increments
10
.5
.3
Available Flat Response
Short Delay Time Settings
0.1 to 0.5 seconds in
0.01 second increments
.2
.2
.1
Application
Determines
End of Curve
.05
.5
.3
.3
.1
.1
.05
AMPERES
Figure 7. Instantaneous and Override, 1600 Amperes - Curve Number SC-6342-96, October 1997
eaton www.eaton.com
50,000
60,000
70,000
80,000
40,000
30,000
5000
6000
7000
8000
9000
10,000
4000
3000
2000
1000
60
70
80
90
100
50
40
30
20
6
7
8
9
10
.01
5
.01
3
.02
4
.02
2
.03
1
.03
CURRENT IN MULTIPLES OF PLUG RATING I n
10
Fixed
Instantaneous
Override
.5
20,000
T IME IN S E C ONDS
10
Time Current Curves TD012038EN
Series C
R-Frame
Effective April 2014
R-Frame Circuit Breakers Equipped with 2000A Digitrip OPTIM Trip Units; Instantaneous and Override
40
50
60
70
80
90
100
30
20
6
7
8
9
10
4
5
3
10,000
2
1
2 HOURS
CURRENT IN MULTIPLES OF PLUG RATING I n
Circuit Breaker Time/Current Curves (Phase Current)
Series C R - Frame Circuit Breakers
Equipped With 2000A Digitrip Optim Trip Units
1 HOUR
5,000
Response: INSTANTANEOUS AND OVERRIDE
Available Rating Plugs
3,000
2,000
1,000
Maximum
Ampere
Rating
Ampere
Rating
(In)
Rating Plug
Catalog
Number
Instantaneous
Pickup Range
2 to 8 x In
Amperes
Override
Amperes
2000
2000
2000
2000
2000
2000
1600
1250
1200
1000
ORPL20A200
ORPL20A160
ORPL20A125
ORPL20A120
ORPL20A100
4000 -16000
3200 -12800
2500 -10000
2400 - 9600
2000 - 8000
14875 -20125
14875 -20125
14875 -20125
14875 -20125
14875 -20125
500
Interrupting Rating
300
Breaker Type
200
RD, CRD
RDC, CRDC
125
200
Breaker Type
IEC 60947-2 rms Sym. kA, 50/60 Hz
240V
415V
690V
UL/CSA rms Sym. kA, 50/60 Hz
240V
480V
600V
1 MINUTE
100
50
65
Icu
Ics
Icu
135
100
70
200
100
100
U IMP = 8kV RD, CRD
RDC, CRDC
50
65
100
Ics
50
50
Icu
Ics
25
13
35
18
Utilization Category A
Notes:
1.For field testing primary injection methods, follow NEMA AB4 guidelines.
30
2.Calibration response in short delay pickup range is the same for 1, 2, or 3 poles in series.
20
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 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.
4.The end of the curve is determined by the interrupting rating of the circuit breaker.
See above tabulation.
5
5.The instantaneous settings have conventional 100%, +/- 10% as the pickup points.
3
6.For additional curve tolerances contact Eaton.
2
7. Total clearing times shown include the response times of the trip unit, the breaker opening,
and the quenching of the arcing current.
1
8
2
1
Available Instantaneous
Pickup Settings
2 to 8 x In ± 10%
In 0.1 Increments
.5
Fixed
Instantaneous
Override
.5
.3
Available Flat Response
Short Delay Time Settings
0.1 to 0.5 seconds
in 0.01 second increments
.2
.2
.1
.1
.1
Application
Determines
End of Curve
.05
.5
.3
.3
.05
CURRENT IN MULTIPLES OF PLUG RATING I n
50,000
60,000
70,000
80,000
40,000
30,000
5000
6000
7000
8000
9000
10,000
4000
3000
2000
1000
60
70
80
90
100
50
40
30
20
6
7
8
9
10
.01
5
.01
3
.02
4
.02
2
.03
1
.03
20,000
T IME IN S E C ONDS
10
AMPERES
Figure 8. Instantaneous and Override, 2000 Amperes - Curve Number SC-6343-96, October 1997
eaton www.eaton.com
11
Time Current Curves TD012038EN
Series C
R-Frame

Effective April 2014
R-Frame Circuit Breakers Equipped with 1600A Digitrip OPTIM Trip Units; Ground Fault or Ground Fault Alarm Only
Circuit Breaker Time/Current Curves (Ground Current)
Series C R - Frame Circuit Breakers
Equipped With 1600A Digitrip Optim Trip Units
Response: GROUND FAULT TRIP OR GROUND FAULT ALARM ONLY
Available Rating Plugs
6
7
8
9
10
4
5
3
2
.6
.7
.8
.9
1
.4
.5
.3
10,000
.2
.1
2 HOURS
CURRENT IN MULTIPLES OF RATING PLUG I n
1 HOUR
5,000
3,000
Maximum
Ampere
Rating
Ampere
Rating
(In)
Rating Plug
Catalog
Number
Ground Fault
Pickup Range
Amperes
1600
1600
1600
1600
1600
1600
1250
1200
1000
800
ORPL16A160
ORPL16A125
ORPL16A120
ORPL16A100
ORPL16A080
400 -1200
312.5 -1200
300 -1200
250 -1000
200 - 800
Interrupting Rating
2,000
UL/CSA rms Sym. kA, 50/60 Hz
240V
480V
600V
Breaker Type
RD, CRD
RDC, CRDC
125
200
500
Breaker Type
IEC 60947-2 rms Sym. kA, 50/60 Hz
240V
415V
690V
300
RD, CRD
RDC, CRDC
200
Notes:
1,000
65
100
50
65
Icu
Ics
Icu
135
100
70
200
100
100
U IMP = 8kV Ics
50
50
Icu
Ics
25
13
35
18
Utilization Category A
1.For field testing primary injection methods, follow NEMA AB4 guidelines.
2.Calibration response in short delay pickup range is the same for 1, 2, or 3 poles in series.
1 MINUTE
100
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 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.
50
30
4.The end of the curve is determined by the interrupting rating of the circuit breaker.
See above tabulation.
20
5.Ground fault level is electronically limited to a maximum of 1200 Amperes.
6.The ground fault settings have conventional 100%, +/- 10% as the pickup points.
T IME IN S E C ONDS
10
7. For additional curve tolerances contact Eaton.
Available Ground Fault
Pickup Settings ±10%
in 0.1 increments
5
8. Total clearing times shown include the response times of the trip unit, the breaker opening,
and the quenching of the arcing current.
3
1.0
2
.5
1
1
.2
.5
.5
.3
.5
.5
Available Flat Response
Ground Fault Time Settings
0.1 to 0.5 seconds
in 0.01 second increments
.3
.3
.3
.2
.2
.1
.1
.1
I2t Slope for
Ground Fault
Time Settings
Availaible I2 t Response
Ground Fault Time Settings
0.1 to 0.5 seconds
in 0.01 second increments
.05
.03
.1
Flat Shape for
Ground Fault
Time Settings
.05
.03
6
7
8
9
10
4
5
3
2
.6
.7
.8
.9
1
.4
.5
.3
.2
6
7
8
9
10
5
4
3
2
.6
.7
.8
.9
1
.5
.4
.01
.3
.01
.2
.02
.1
.02
CURRENT IN MULTIPLES OF RATING PLUG I n
Figure 9. Ground Fault or Ground Fault Alarm Only, 1600 Amperes - Curve Number SC-6345-96, October 1997
12
eaton www.eaton.com
Time Current Curves TD012038EN
Series C
R-Frame
Effective April 2014
R-Frame Circuit Breakers Equipped with 2000A Digitrip OPTIM Trip Units; Ground Fault or Ground Fault Alarm Only
Circuit Breaker Time/Current Curves (Ground Current)
Series C R - Frame Circuit Breakers
Equipped With 2000A Digitrip Optim Trip Units
Response: GROUND FAULT TRIP OR GROUND FAULT ALARM ONLY
Available Rating Plugs
6
7
8
9
10
4
5
3
2
.6
.7
.8
.9
1
.4
.5
.3
10,000
.2
.1
2 HOURS
CURRENT IN MULTIPLES OF RATING PLUG I n
1 HOUR
5,000
3,000
Maximum
Ampere
Rating
Ampere
Rating
(In)
Rating Plug
Catalog
Number
Ground Fault
Pickup Range
Amperes
2000
2000
2000
2000
2000
2000
1600
1250
1200
1000
ORPL20A200
ORPL20A160
ORPL20A125
ORPL20A120
ORPL20A100
500 -1200
400 -1200
312.5 -1200
300 -1200
250 -1000
Interrupting Rating
2,000
UL/CSA rms Sym. kA, 50/60 Hz
240V
480V
600V
Breaker Type
1,000
RD, CRD
RDC, CRDC
125
200
500
Breaker Type
IEC 60947-2 rms Sym. kA, 50/60 Hz
240V
415V
690V
300
RD, CRD
RDC, CRDC
200
65
100
50
65
Icu
Ics
Icu
135
100
70
200
100
100
U IMP = 8kV Notes:
Ics
50
50
Icu
Ics
25
13
35
18
Utilization Category A
1.For field testing primary injection methods, follow NEMA AB4 guidelines.
2.Calibration response in short delay pickup range is the same for 1, 2, or 3 poles in series.
1 MINUTE
100
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 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.
50
30
4.The end of the curve is determined by the interrupting rating of the circuit breaker.
See above tabulation.
20
5.Ground fault level is electronically limited to a maximum of 1200 Amperes.
6.The ground fault settings have conventional 100%, +/- 10% as the pickup points.
T IME IN S E C ONDS
10
7.For additional curve tolerances contact Eaton.
Available Ground Fault
Pickup Settings ±10%
in 0.1 increments
5
8.Total clearing times shown include the response times of the trip unit, the breaker opening,
and the quenching of the arcing current.
3
1.0
2
.5
1
1
.2
.5
.3
.5
.5
.5
Available Flat Response
Ground Fault Time Settings
0.1 to 0.5 seconds
in 0.01 second increments
.3
.3
.3
.2
.2
.1
.1
.1
I2t Slope for
Ground Fault
Time Settings
Availaible I2t Response
Ground Fault Time Settings
0.1 to 0.5 seconds
in 0.01 second increments
.05
.03
.1
Flat Shape for
Ground Fault
Time Settings
.05
.03
6
7
8
9
10
4
5
3
2
.6
.7
.8
.9
1
.4
.5
.3
.2
6
7
8
9
10
5
4
3
2
.6
.7
.8
.9
1
.5
.4
.01
.3
.01
.2
.02
.1
.02
CURRENT IN MULTIPLES OF RATING PLUG I n
Figure 10. Ground Fault or Ground Fault Alarm Only, 2000 Amperes - Curve Number SC-6346-96, October 1997
eaton www.eaton.com
13
Time Current Curves TD012038EN
Series C
R-Frame

Effective April 2014
R-Frame Circuit Breakers Equipped with 2500A Digitrip OPTIM Trip Units; Long Delay I2t, Short Delay I2t
1 HOUR
50
60
70
80
90
100
40
30
20
5
6
7
8
9
10
3
2
0.6
0.7
0.8
0.9
1
10,000
0.5
2 HOURS
CURRENT IN MULTIPLES OF LONG DELAY SETTING I r
Available Long Delay
Pickup Settings (I r)
0.5 to 1 x In = Ir
in 0.01 increments
5,000
Circuit Breaker Time/Current Curves (Phase Current)
Series C R - Frame Circuit Breakers
Equipped With 2500A Digitrip Optim Trip Units
3,000
Response: LONG DELAY I2t, SHORT DELAY I2t
2,000
Available Rating Plugs
1,000
Maximum
Total
Clearing
Time
500
Maximum
Ampere
Rating
Ampere
Rating
(In)
Rating Plug
Catalog
Number
2500
2500
2500
2500
2000
1600
ORPL25A250
ORPL25A200
ORPL25A160
Long Delay
Pickup Range
0.4 to 1 x In
Amperes
1000 -2500
800 -2000
640 -1600
Short Delay
Pickup Range
1.5 to 6.4 x Ir
Amperes
1500 - 16000
1200 - 12800
960 - 10240
Interrupting Rating
300
Breaker Type
IEC 60947-2 rms Sym. kA, 50/60 Hz
240V
415V
690V
24
65
100
50
65
Icu
Ics
Icu
135
100
70
200
100
100
U IMP = 8kV Notes:
Minimum
Total
Clearing
Time
Ics
50
50
Icu
Ics
25
13
35
18
Utilization Category A
1.For field testing primary injection methods, follow NEMA AB4 guidelines.
2.Calibration response in short delay pickup range is the same for 1, 2, or 3 poles in series.
7
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 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.
Available
Long Delay
Time Settings
Shown @ 6 x I r
2-24 seconds +0 ⁄-30%
in 0.1 second
increments
10
T IME IN S E C ONDS
125
200
RD
RDC
50
20
RD
RDC
4
4.The end of the curve is determined by the interrupting rating of the circuit breaker.
See above tabulation.
5.This curve is shown as a multiple of the Long Delay Pick-up Setting, (Ir). This Ir setting is
programmed in primary value amperes via a Breaker Interface Module, or OPTIMizer,
or a Remote PC (IMPACC System).
3
2
2
Available
Short Delay
Pickup Settings
1.5 to 6.4 x Ir
±5% in 0.1
increments
1
.5
6.The Long Delay Pick-up Point (indicated by a flashing LED on the product) nominally occurs
above 115% of the Ir current, with a +/- 5% tolerance. The short delay settings have conventional
100%, +/- 5% as the pickup points.
7.For additional curve tolerances contact Eaton.
1
8.Total clearing times shown include the response times of the trip unit, the breaker opening,
and the quenching of the arcing current.
.5
.5
.3
.3
.3
.2
.2
Application
Determines
End of Curve
.1
.1
.1
Available I2t Slope
Short Delay Time Settings
0.1 to 0.5 seconds in
0.01 second increments
.05
.05
CURRENT IN MULTIPLES OF LONG DELAY SETTING I r
Figure 11. Long Delay I2T, Short Delay I2T - Curve Number SC-6339-96, October 1997
14
eaton www.eaton.com
6000
7000
8000
9000
10,000
4000
5000
3000
2000
500
600
700
800
900
1000
300
400
200
50
60
70
80
90
100
40
30
20
5
.01
6
7
8
9
10
.01
4
.02
3
.02
2
.03
0.5
0.6
0.7
0.8
0.9
1
.03
T IME IN S E C ONDS
1 MINUT E
100
30
UL/CSA rms Sym. kA, 50/60 Hz
240V
480V
600V
Breaker Type
200
Time Current Curves TD012038EN
Series C
R-Frame
Effective April 2014
R-Frame Circuit Breakers Equipped with 2500A Digitrip OPTIM Trip Units; Long Delay I2t, Short Delay Flat
1 HOUR
40
50
60
70
80
90
100
30
20
5
6
7
8
9
10
3
2
0.5
10,000
0.6
0.7
0.8
0.9
1
2 HOURS
CURRENT IN MULTIPLES OF LONG DELAY SETTING I r
Circuit Breaker Time/Current Curves (Phase Current)
Series C R - Frame Circuit Breakers
Equipped With 2500A Digitrip Optim Trip Units
Circuit Breaker Time/Current
Curves (Phase Current)
Response: LONG DELAY I 2 t, SHORT DELAY FLAT
Series C R - Frame Circuit Breakers
Available Long Delay
Pickup Settings (Ir )
0.5 to 1 x I n = Ir
in 0.01 increments
5,000
Available Rating Plugs
Equipped
With
2500ARating
Digitrip
Optim
Trip Units
Maximum
Ampere
Plug
Long Delay
3,000
Ampere
Rating
Catalog
Pickup Range
Amperes
Available
Rating
Plugs ORPL25A250
2500
2500
2,000
Maximum
Ampere
Rating
1,000
2000
Ampere
1600
Rating
(In)
2500
2500
2500
Maximum
Total
Clearing
Time
500
1000 -2500
800 -2000
640 -1600
Amperes
r
1500 - 16000
Long Delay
1200 - 12800
Pickup Range
960 - 10240
0.4 to 1 x In
Amperes
1000 -2500
800 -2000
640 -1600
Short Delay
Pickup Range
1.5 to 6.4 x Ir
Amperes
1500 - 16000
1200 - 12800
960 - 10240
Interrupting Rating
200
100
UL/CSA rms Sym. kA, 50/60 Hz
240V
480V
600V
RD
RDC
125
200
65
100
50
65
Breaker Type
IEC 60947-2 rms Sym. kA, 50/60 Hz
240V
415V
690V
Interrupting Rating @ 50/60 Hz RMS Sym. Amperes (kA)
Breaker
UL / CSA
RDType
RDC
RD
50
Volts
kA
RDC
Notes:
20
Plug
Catalog
Number
n
ORPL25A250
ORPL25A200
ORPL25A160
Breaker Type
30
ORPL25A200
Rating
ORPL25A160
2500
2000
1600
300
1 MINUT E
Short Delay
Pickup Range
FLAT
Response:
LONG
DELAY
I2t, SHORT
Rating
(I n)
Number
0.4 DELAY
to 1 x I
1.5 to 6.4 x I
Minimum
Total
Clearing
Time
Icu
Ics
Icu
135
100
70
240
200
100
100
125
200
U IMP = 8kV Ics
Icu
Ics
25 600 13
35 50 18
Utilization65Category A
50
480
50
65
100
IEC 947-2
Volts
415
240
690
1.For field testing
primary injection
methods,
follow NEMA
AB4
guidelines.
Rating
I
I
I
I
I
I
24
CU
CS
CU
CU
CS
CS
135
70
25
RD
kA
2.
Calibration response
in short
delay 100
pickup 100
range
is 50
the same
for 1,13
2, or 3 poles in series.
200
35
RDC
100
50
18
U
= 8kV
Utilization Category A
3.There is a memory
effect that can
act to shorten the long delay. The memory effect comes into
IMP
T IME IN S E C ONDS
10
7
5
4
Notes
play if a current above the long delay pickup value exists for a time and then is cleared by the
1) For field testing primary injection methods, follow NEMA AB4-1991 publications.
tripping
of aindownstream
device
the
circuit
breaker
itself. A subsequent overload will cause the
2)
Calibration
response
short delay pickup range
is the or
same
for 1,
2, or 3 poles
in series.
3)
There
is a memory
effect to
that trip
can act
shorten thetime
long delay.
Thenormal.
memory effect
circuit
breaker
intoshorter
than
The amount of time reduction is inverse to the
comes into play if a current above the long delay pickup value exists for a time and then
amount
timeof athat
has elapsed
since
the previous
overload. Approximately five minutes is
is cleared
by theof
tripping
downstream
device or the
circuit breaker
itself. A
subsequent overload will cause the circuit breaker to trip in shorter time than normal.
required between overloads to completely reset the memory.
The amount of time 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.
4.
end
of the
curve by
isthe
determined
byof the
interrupting
rating of the circuit breaker.
4) TheThe
end of
the curve
is determined
interrupting rating
the circuit
breaker.
SeeSee
aboveabove
tabulation.
tabulation.
5) For ground fault time / current curves see SC-6345-96 (1600A), SC-6346-96 (2000A), and
SC-6347-96 (2500A)
6)
This
curvecurve
is shownis
as shown
a multiple ofas
theaLong
Delay Pick-up
Setting,
(Ir). This
I r settingPick-up
is
5.
This
multiple
of the
Long
Delay
Setting, (Ir). This Ir setting is
programmed in primary value amperes via a Breaker Interface Module, or OPTIMizer,
in System).
primary value amperes via a Breaker Interface Module, or OPTIMizer,
or programmed
a Remote PC (IMPACC
7)
Theor
Long
Delay Pick-upPC
Point(IMPACC
(indicated by aSystem).
flashing LED on the product) nominally occurs
a
Remote
at 116% of the Ir current, with a +/- 5% tolerance. The short delay settings have conventional
100%, +/- 5% as the pickup points.
8)
ForThe
additional
curve
tolerances
contact Cutler-Hammer.
6.
Long
Delay
Pick-up
Point (indicated by a flashing LED on the product) nominally occurs
9) Total clearing times shown include the response times of the trip unit, the breaker opening,
above
115%
ofarcing
the current.
Ir current, with a +/- 5% tolerance. The short delay settings have conventional
and
the extinction
of the
Available
Long Delay
Time Settings
Shown @ 6 x I r
2-24 seconds +0 ⁄-30%
in 0.1 second
increments
3
2
2
100%, +/- 5% as the pickup points.
Available
Short Delay
Pickup Settings
1.5 to 6.4 x Ir
±5% in 0.1
increments
1
.5
7.For additional curve tolerances contact Eaton.
1
8.Total clearing times shown include the response times of the trip unit, the breaker opening,
and the quenching of the arcing current.
.5
.5
.3
.3
.3
.2
Application
Determines
End of Curve
.1
.1
.1
.05
.05
Available Flat
Short Delay Time Settings
0.1 to 0.5 seconds
in 0.01 second increments
.03
.03
6000
7000
8000
9000
10,000
4000
5000
3000
2000
500
600
700
800
900
1000
300
400
200
50
60
70
80
90
100
40
30
20
5
6
7
8
9
10
.01
4
.01
3
.02
2
.02
0.5
0.6
0.7
0.8
0.9
1
T IME IN S E C ONDS
.2
CURRENT IN MULTIPLES OF LONG DELAY SETTING I r
Figure 12. Long Delay I2T, Short Delay Flat - Curve Number SC-6340-96, October 1997
eaton www.eaton.com
15
Time Current Curves TD012038EN
Series C
R-Frame

Effective April 2014
R-Frame Circuit Breakers Equipped with 2500A Digitrip OPTIM Trip Units; Long Delay I4t, Short Delay Flat
1 HOUR
40
50
60
70
80
90
100
30
20
5
6
7
8
9
10
3
2
0.6
0.7
0.8
0.9
1
10,000
0.5
2 HOURS
CURRENT IN MULTIPLES OF LONG DELAY SETTING I r
Circuit Breaker Time/Current Curves (Phase Current)
Series C R - Frame Circuit Breakers
Equipped With 2500A Digitrip Optim Trip Units
Circuit Breaker Time/Current
Curves (Phase Current)
Response: LONG DELAY I 4 t, SHORT DELAY FLAT
Series C R - Frame Circuit Breakers
Available Long Delay
Pickup Settings (Ir )
0.5 to 1 x I n = Ir
in 0.01 increments
5,000
Available Rating Plugs
Equipped
With
2500A Rating
Digitrip
Optim
Trip Units Short Delay
Maximum
Ampere
Plug
Long Delay
3,000
Ampere
Rating
Catalog
Rating
(I n)
Number
FLAT
Response:
LONG
DELAY
I4t, SHORT
0.4 DELAY
to 1 x I
1.5 to 6.4 x I
Pickup Range
Amperes
2,000
Available
Rating
2500
2500 Plugs
Maximum
Total
Clearing
Time
2000
1600
Ampere
Maximum
Ampere
Rating
1,000
Plug
Catalog
Number
Rating
(In)
2500
2500
2500
ORPL25A250
ORPL25A200
ORPL25A160
Rating
2500
2000
1600
Pickup Range
n
1000 -2500
800 -2000
640 -1600
Amperes
r
1500 - 16000
Long Delay
1200 - 12800
960 - 10240
Pickup Range
0.4 to 1 x In
Amperes
ORPL25A250
ORPL25A200
ORPL25A160
1000 -2500
800 -2000
640 -1600
Short Delay
Pickup Range
1.5 to 6.4 x Ir
Amperes
1500 - 16000
1200 - 12800
960 - 10240
500
300
1 MINUT E
200
Interrupting Rating
Minimum
Total
Clearing
Time
UL/CSA rms Sym. kA, 50/60 Hz
240V
480V
600V
Breaker Type
100
RD
RDC
125
200
65
100
50
65
Breaker Type
IEC 60947-2 rms Sym. kA, 50/60 Hz
240V
415V
690V
Interrupting Rating @ 50/60 Hz RMS Sym. Amperes (kA)
Breaker
50
Icu
Ics
Icu
135
100
70
240
200
100
100
125
200
U IMP = 8kV UL / CSA
RD
Type
RDC
RD
Volts
kA
RDC
Notes:
IEC 947-2
Volts
30
Ics
Icu
Ics
25 600 13
35 50 18
Utilization65 Category A
50
480
50
65
100
415
240
690
1.For field testing
primary injection
methods,
follow INEMA IAB4 guidelines.
Rating
I
I
I
I
CU
CS
135
RD
CU
CU
CS
70
CS
25
100
13
kA
2.
Calibration response
in short
pickup 100
range is 50
the same
200 delay 100
35 for 1,182, or 3 poles in series.
RDC
50
20
U IMP = 8kV
Utilization Category A
3.There is a memory effect that can act to shorten the long delay. The memory effect comes into
Notes
play if a current above the long delay pickup value exists for a time and then is cleared by the
1) For field testing primary injection methods, follow NEMA AB4-1991 publications.
tripping
of aindownstream
device
or the
circuit
breaker
itself. A subsequent overload will cause the
2)
Calibration
response
short delay pickup range
is the same
for 1,
2, or 3 poles
in series.
3)
There
is a memory
effect that
can act
shorten thetime
long delay.
The normal.
memory effect
circuit
breaker
to trip
intoshorter
than
The amount of time reduction is inverse to the
comes into play if a current above the long delay pickup value exists for a time and then
is cleared
by theof
tripping
of athat
downstream
device or thesince
circuit breaker
itself. A
amount
time
has elapsed
the previous
overload. Approximately five minutes is
subsequent overload will cause the circuit breaker to trip in shorter time than normal.
between
to completely
Therequired
amount of time
reduction isoverloads
inverse to the amount
of time that hasreset
elapsedthe
sincememory.
the
previous overload. Approximately five minutes is required between overloads to
completely reset the memory.
4.
of the
curvebyisthe
determined
by
thecircuit
interrupting
rating of the circuit breaker.
4)
TheThe
end ofend
the curve
is determined
interrupting rating
of the
breaker.
See
above
tabulation.
See above tabulation.
5) For ground fault time / current curves see SC-6345-96 (1600A), SC-6346-96 (2000A), and
SC-6347-96 (2500A)
6)
ThisThis
curve curve
is shown is
as ashown
multiple ofas
the a
Long
Delay Pick-up
(Ir). This
I r settingPick-up
is
5.
multiple
of Setting,
the Long
Delay
Setting, (Ir). This Ir setting is
programmed in primary value amperes via a Breaker Interface Module, or OPTIMizer,
inSystem).
primary value amperes via a Breaker Interface Module, or OPTIMizer,
or programmed
a Remote PC (IMPACC
7)
The
Long
Delay
Pick-up
Point
(indicated
by
a
flashing
LED
on
the
product)
nominally
occurs
or a Remote PC (IMPACC System).
at 116% of the Ir current, with a +/- 5% tolerance. The short delay settings have conventional
100%, +/- 5% as the pickup points.
8) For additional curve tolerances contact Cutler-Hammer.
6.
The
Long
Pick-up
Point times
(indicated
LED on the product) nominally occurs
9)
Total
clearing
timesDelay
shown include
the response
of the trip by
unit, a
theflashing
breaker opening,
andabove
the extinction
of the
115%
ofarcing
thecurrent.
I current, with a +/- 5% tolerance. The short delay settings have conventional
5
Available
Long Delay
Time Settings
Shown @ 6 x I r
1-5 seconds +10 ⁄-40%
in 0.1 second
increments
2
r
100%, +/- 5% as the pickup points.
Available
Short Delay
Pickup Settings
1.5 to 6.4 x Ir
±5% in 0.1
increments
1
.5
7.For additional curve tolerances contact Eaton.
1
8.Total clearing times shown include the response times of the trip unit, the breaker opening,
and the quenching of the arcing current.
.5
.5
.3
.3
.2
.2
Application
Determines
End of Curve
.1
.1
.1
.05
.05
Available Flat
Short Delay Time Settings
0.1 to 0.5 seconds
in 0.01 second increments
.03
.03
CURRENT IN MULTIPLES OF LONG DELAY SETTING I r
Figure 13. Long Delay I4T, Short Delay Flat - Curve Number SC-6341-96, October 1997
16
eaton www.eaton.com
4000
5000
3000
2000
500
600
700
800
900
1000
300
400
200
50
60
70
80
90
100
40
30
20
5
6
7
8
9
10
4
.01
3
.01
2
.02
0.5
0.6
0.7
0.8
0.9
1
.02
T IME IN S E C ONDS
3
6000
7000
8000
9000
10,000
T IME IN S E C ONDS
10
Time Current Curves TD012038EN
Series C
R-Frame
Effective April 2014
R-Frame Circuit Breakers Equipped with 2500A Digitrip OPTIM Trip Units; Instantaneous and Override
50
60
70
80
90
100
30
40
20
5
6
7
8
9
10
3
4
10,000
2
1
2 HOURS
CURRENT IN MULTIPLES OF PLUG RATING I n
Circuit Breaker Time/Current Curves (Phase Current)
Circuit Breaker Time/Current Curves (Phase Current)
Series C R - Frame Circuit Breakers
Series
C With
R - Frame
Breakers
Equipped
2500A Circuit
Digitrip Optim
Trip Units
Response: With
INSTANTANEOUS
AND OVERRIDE
Equipped
2500A Digitrip
Optim Trip Units
1 HOUR
5,000
Available Rating PlugINSTANTANEOUS AND OVERRIDE
Response:
3,000
Maximum
Ampere
Rating
(I n)
Rating Plug
Catalog
Number
Ampere
Rating Plugs
Available
Rating
Maximum
2500
Ampere
Rating
2,000
2500
2500
2500
1,000
Rating Plug
Ampere
Catalog
ORPL25A250
ORPL25A200
Number
ORPL25A160
Rating
2500
2000
(I )
1600n
2500
2000
1600
Instantaneous
Override
Pickup Range
Amperes
2 to 6.4 x In Instantaneous
Amperes
Pickup Range
2 to 6.4 x I
Override
Amperes
n -20125
14875
5000 -16000
14875 -20125
4000 -12800Amperes
14875 -20125
3200 -10240
ORPL25A250
ORPL25A200
ORPL25A160
5000 -16000
4000 -12800
3200 -10240
14875 -20125
14875 -20125
14875 -20125
Interrupting Rating
500
UL/CSA rms Sym. kA, 50/60 Hz
240V
480V
600V
Breaker Type
300
RD
RDC
125
200
Breaker Type
IEC 60947-2 rms Sym. kA, 50/60 Hz
240V
415V
690V
200
50
65
Icu
Ics
Icu
RD
135
100
70
Interrupting Rating @ 50/60 Hz RMS Sym. Amperes (kA)
RDC
200
100
100
Breaker
UL / CSA
U IMP = 8kV Notes:
Type
Volts
240
100
1 MINUTE
65
100
RD
50
Ics
50
50
125
kA
Icu
Ics
25
13
35
18
Utilization Category A
480
600
65
50
RDC
200methods, follow
100 NEMA AB4 guidelines.
65
1.
For field testing primary injection
IEC 947-2
2.Calibration response
in short delay
pickup range415is the same for
1, 2, or 3 poles in series.
Volts
240
690
30
Rating effect that
I
I
I
I to shorten
I long delay.
I memory effect comes
3.There is a memory
can act
the
The
135 long 100
70
25 for a time
RD
into play if a current
above the
delay pickup
value
and then is cleared
50 exists
13
kA
200
100 circuit
35 itself.18
RDC
100 or the
50 breaker
by the tripping of a downstream
device
A subsequent overload
U
= 8kV
Category A time than normal. The amount of time
will cause the circuit
breaker to Utilization
trip in shorter
reduction is inverse to the amount of time that has elapsed since the previous overload.
Notes
1) ForApproximately
field testing primary injection
methods, follow
NEMA AB4-1991
publications.
five minutes
is required
between
overloads to completely reset the memory.
CU
20
CS
CU
CU
CS
CS
IMP
2) Calibration response in short delay pickup range is the same for 1, 2, or 3 poles in series.
3) There is a memory effect that can act to shorten the long delay. The memory effect
comes
playof
if a the
current
above the
delay pickup value
a time and thenrating of the circuit breaker.
4.
Theinto
end
curve
is long
determined
by exists
the for
interrupting
is cleared by the tripping of a downstream device or the circuit breaker itself. A
See above
tabulation.
subsequent
overload
will cause the circuit breaker to trip in shorter time than normal.
The amount of time reduction is inverse to the amount of time that has elapsed since the
previous overload. Approximately five minutes is required between overloads to
5.
The instantaneous
completely
reset the memory. settings have conventional 100%, +/- 10% as the pickup points.
4) The end of the curve is determined by the interrupting rating of the circuit breaker.
See above tabulation.
5) ForFor
ground
fault time / current
curves
see SC-6345-96
(1600A), Eaton.
SC-6346-96 (2000A), and
6.
additional
curve
tolerances
contact
SC-6347-96 (2500A)
6) The instantaneous settings have conventional 100%, +/- 10% as the pickup points.
ForTotal
additional
curve tolerances
Cutler-Hammer.
77).
clearing
timescontact
shown
include the response times of the trip unit, the breaker opening,
8) Total clearing times shown include the response times of the trip unit, the breaker opening,
and the quenching of the arcing current.
and the extinction of the arcing current.
T IME IN S E C ONDS
10
5
3
2
1
6.4
2
1
Available Instantaneous
Pickup Settings
2 to 6.4 x In ± 10%
In 0.1 Increments
.5
Fixed
Instantaneous
Override
.5
.3
Available Flat Response
Short Delay Time Settings
0.1 to 0.5 seconds
in 0.01 second increments
.2
.3
.3
.2
.1
.1
.1
Application
Determines
End of Curve
.05
.5
.05
CURRENT IN MULTIPLES OF PLUG RATING I n
50,000
60,000
70,000
80,000
40,000
30,000
20,000
5000
6000
7000
8000
9000
10,000
4000
3000
2000
1000
50
60
70
80
90
100
30
40
20
5
.01
6
7
8
9
10
.01
3
.02
4
.02
2
.03
1
.03
AMPERES
Figure 14. Instanteneous and Override - Curve NumberSC-6344-96, October 1997
eaton www.eaton.com
17
Time Current Curves TD012038EN
Series C
R-Frame

Effective April 2014
R-Frame Circuit Breakers Equipped with 2500A Digitrip OPTIM Trip Units; Ground Fault or Ground Fault Alarm Only
Circuit Breaker Time/Current Curves (Phase Current)
Series C R - Frame Circuit Breakers
6
7
8
9
10
4
5
3
2
.6
.7
.8
.9
1
.4
.5
.3
10,000
.2
.1
2 HOURS
CURRENT IN MULTIPLES OF RATING PLUG I n
1 HOUR
5,000
Equipped With 2500A Digitrip Optim Trip Units
Circuit
Breaker
Time/Current
Curves
(Ground
Current) FAULT ALARM ONLY
Response:
GROUND
FAULT
TRIP
OR GROUND
Series C R - Frame Circuit Breakers
Available
Rating
Plugs
Equipped With 2500A Digitrip Optim Trip Units
Response:
ORPlug
GROUND FAULT
ALARM
Rating
AmpereFAULT TRIP
Ground
Fault ONLY
Maximum GROUND
Ampere
Rating
Available Rating Plugs
Maximum
Ampere
2500
Rating
3,000
Ampere
Rating
2500
(I n)
2500
2500
2500
2,000
Catalog
Number
Rating
(In)
2000
1600
2500
500 -1200
400 -1200
ORPL25A200
ORPL25A160
2000
UL/CSA rms Sym. kA, 50/60 Hz
240V
480V
600V
Breaker Type
RD
RDC
125
200
Breaker Type
IEC 60947-2 rms Sym. kA, 50/60 Hz
240V
415V
690V
500
300
65
100
50
65
Icu
Ics
Icu
135
100
70
200
100
100
U IMP = 8kV RD
RDC
200
Ground Fault
Pickup
Range
625
-1200
Amperes
500 -1200
400 625
-1200
-1200
ORPL25A200
ORPL25A160
ORPL25A250
1600
Interrupting Rating
1,000
Pickup Range
Amperes
Rating Plug
Catalog
ORPL25A250
Number
Notes:
Ics
50
50
Icu
Ics
25
13
35
18
Utilization Category A
Interrupting Rating @ 50/60 Hz RMS Sym. Amperes (kA)
1.
For field testing
primary injection methods, follow NEMA AB4 guidelines.
Breaker
UL / CSA
1 MINUTE
100
Type
Volts
240 pickup range
480is the same for
6001, 2, or 3 poles in series.
2.
Calibration response
in short delay
RD
30
kA
RDC
65
50
CU
CS
CU
CS
CU
CS
200
100
100
50
35
18
4.The end of the Ucurve
is determined
byCategory
the interrupting
rating of the circuit breaker.
= 8kV
Utilization
A
See above tabulation.
20
IMP
Notes
1) For field testing primary injection methods, follow NEMA AB4-1991 publications.
2)5.
Calibration
response
range is the same
for 1, 2,to
or a
3 maximum
poles in series. of 1200 Amperes.
Ground
faultin short
leveldelay
is pickup
electronically
limited
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
orconventional
the circuit breaker itself.
A +/- 10% as the pickup points.
6.
The
ground
fault
settings
have
100%,
subsequent overload will cause the circuit breaker to trip in shorter time than normal.
The amount of time reduction is inverse to the amount of time that has elapsed since the
previous
overload.
Approximately
five
minutes is required
between
overloads to
7.
For
additional
curve
tolerances
contact
Eaton.
completely reset the memory.
4) The end of the curve is determined by the interrupting rating of the circuit breaker.
See above tabulation.
8.
Total clearing times shown include the response times of the trip unit, the breaker
5) Ground fault level is electronically limited to a maximum of 1200 Amperes.
quenching
of the arcing
current.
6)
For and
phase the
current
curves, see SC-6336-96,
SC-6337-96,
SC-6338-96, SC-6339-96,
SC-6340-96, SC-6341-96, SC-6342-96, SC-6343-96, and SC-6344-96.
7) The ground fault settings have conventional 100%, +/- 10% as the pickup points.
8) For additional curve tolerances contact Cutler-Hammer.
9) Total clearing times shown include the response times of the trip unit, the breaker opening,
and the extinction of the arcing current.
10
T IME IN S E C ONDS
125
kA
RDC
200 act to shorten
100the long delay.
65The memory effect comes
3.
There is a memory effect that can
into play if a current
IEC 947-2 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
415
0
690
will cause theVolts
circuit breaker to24trip
in shorter time
than normal.
The amount of time
Rating
I
I since the
I time Ithat hasI elapsed
I
reduction is inverse
to the amount
of
previous overload.
is required
overloads
to completely
reset the memory.
70
25
RD Approximately five minutes135
100 between
50
13
50
Available Ground Fault
Pickup Settings ±10%
in 0.01 increments
5
3
1.0
2
1
1
.2
.5
.5
.5
.5
Available Flat Response
Ground Fault Time Settings
0.1 to 0.5 seconds
in 0.01 second increments
.3
.3
.2
.2
.1
.1
.1
I2 t Slope for
Ground Fault
Time Settings
.1
Availaible I2 t Response
Ground Fault Time Settings
0.1 to 0.5 seconds
in 0.01 second increments
.05
.03
Flat Shape for
Ground Fault
Time Settings
.03
Figure 15. Ground Fault or Ground Fault Alarm Only - Curve Number SC-6347-96, October 1997
eaton www.eaton.com
6
7
8
9
10
4
5
3
2
.6
.7
.8
.9
1
.4
.5
.3
.2
6
7
8
9
10
5
4
3
2
.6
.7
.8
.9
1
.5
.4
.01
.3
.01
.2
.02
.1
.02
CURRENT IN MULTIPLES OF RATING PLUG I n
18
.05
opening,
Series C
R-Frame
Time Current Curves TD012038EN
Effective April 2014
eaton www.eaton.com
19
Time Current Curves TD012038EN
Effective April 2014
Series C
R-Frame

Eaton
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Cleveland, OH 44122
United States
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Printed in USA
Publication No. TD012038EN / KDC
April 2014
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of their respective owners.