AIR CIRCUIT BREAKERS - Electrical and Electronics Division

1 Rating (A) 1600 2000 2500
Type Designation S C H E C H C H
Rated Current (A) 400C In 1600 1600 1600 2000 2000 2000 2500 2500
Rated Operational Voltage (V) 50/60Hz Ue* 415 415 415 415 415 415 415 415
Rated insulation voltage (V), 50/60Hz Ui 1000 1000 1000 1000 1000 1000 1000 1000
No. of poles 3 3/4 3/4 3 3/4 3/4 3/4 3/4
Rated ultimate short circuit Icu
breaking capacity
50/60Hz (kA rms)
380/415/500V 50 50 65 50 55 75 60 75
Rated service short circuit Ics
breaking capcity
50/60Hz (kA rms)
380/415/500V 38 50 65 50 55 75 60 75
Rated short time withstand capacity Icw 0.5sec 38 5065 5055 75 60 75
50/60Hz (kA rms) 1sec 38 50 65 50 55 75 60 75
Rated making capacity Icm
50/60Hz (kA peak) 380/415/500V 105 105 143 105 121 165 132 165
Rated impulse withstand voltage of main circuit (kV), Uimp 8 8 8 8 8 8 8 8
Rated impulse withstand voltage of aux. circuit (kV), Uimp 4 4 4 4 4 4 4 4
Typical opening time msec 40 4040 40404040 40
Typical closing time msec 60 6060 60606060 60
Utilization category B B B B B B B B
Suitability for isolation ü ü ü ü ü ü ü ü
�ixed ü ü ü ü
Versions
Dimensions(mm)
1/4
TECHNICAL DATA
Drawout ü ü ü ü ü ü ü
Manual ü ü ü ü ü ü ü ü
Electrical ü ü ü ü ü ü
CT taps for Thermo-Magnetic (DN1), Solid State (SR15, SR15G) Releases Amps 1250,1600 1000,1250,1600,2000 2000,2500
CT taps for Microprocessor based (SR21, SR21E & SR61C) Releases Amps --- 1600 --- 2000 2500
Electrical & Mechanical life (Operating Cycles)** 20,000 20,000 20,000 20,000 20,000 20,000 20,000 20,000
Fixed
D
H 394 385 394 394
3 pole 378 378 534 534
W
4 pole
NA
466
NA
NA 680
NA
680
NA
H
D 431 447 431 431
Drawout
D
H 468 468 468 468 468 468 468
H
W
3pole
4 pole
399
NA
399
487
399
487
NA
555
701
555
701
555
701
555
701
D 587 587 587 587 587 587 587
NA - Not Available
* Please consult us for applications at higher operational voltages upto 1000V and dc voltages.
** Electrical life = Mechanical life, however arcing contacts need to be replaced depending upon wear.
Arcing contacts are readily available as spares & easily replaceable at site.
▲ Available in CN-CS version also.
Note:1) A Choice of straight horizontal rear, straight vertical rear, flat rear and front terminal orientations in all drawout ACBs.
2) Data of Icw rating for 3 sec is available on request.