AIR CIRCUIT BREAKERS - Electrical and Electronics Division

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Conformance to IS 13947 (Part 3) and IEC:60947-3
Type Designation �N32 �N63 �N100 �N125
No. of poles 3+Neutral 3+Neutral 3+Neutral 3+Neutral
Neutral Switched Switched Isolable Isolable
Service temperature °C -20 to 50 -20 to 50 -20 to 50 -20 to 50
Rated operational voltage (Ue) V 415 415 415 415
Rated insulation voltage (Ui) V 690 690 690 690
Rated impulse withstand voltage(Uimp) kV 888 8
Rated frequency Hz 50-60 50-60 50-60 50-60
Conventional Enclosed thermal current at 40°C A 32 63 100 125
Rated operational current Ie A
AC 20A utilization category 32 63 100 125
AC-21A utilization category 32 63 100 125
AC-22A utilization category 32 63 100 125
AC-23A utilization category 32 63 100 125
DC rating at 220V DC 32 63 100 125
No.of poles in series,utilization category
TECHNICAL DATA
SWITCH DISCONNECTOR �USE �OR BS TYPE �USES
at rated current 3,DC23A 3,DC23A 2,DC23A 2,DC23A
Rated making capacity (436V, cosØ-0.35) A 320 630 1000 1250
Rated breaking capacity (436V, cosØ-0.35) A 256 504 800 1000
Rated fused short circuit current kA 80 80 80 80
with L&T fuses rating,A /Type Size 32,HQ,A1 63,HQ,A1 100,HQ,A4 125,HQ,A4
Capacitor duty - 415 V 50-60Hz kVAR 14 29 45 57
Mechanical life (operating cycles) 15000 15000 15000 15000
Terminal capacity (main) mm 2 35 35 95 95
Terminal capacity (neutral) mm 2 35 35 50 50
Terminal screw mm M6X12 M6X12 M8X20 M8X30