AIR CIRCUIT BREAKERS - Electrical and Electronics Division

Manual Reset
WIRING DIAGRAMS
SIGNALLING �OR OVERLOAD AND SHORT-CIRCUIT TRIPPING
The cancelling of the fault signal is effected by pressing the
local trip button, which also resets the overcurrent release.
Signalling Switches
C1-for ‘Overload and Short Circuit’ Trip
C2-for ‘Short Circuit’ Trip
INDICATING LAMPS
L1-Common for ‘Overload and short Circuit’ Trip
L2-for ‘Overload’ Trip
L3-for ‘Short Circuit’ Trip
B1, B2, B3, B4 - Contactors
BPED - ‘Signal Cancelling’ Push button
-(o- SIC terminals
Note : Wiring shown inside dotted lines is wired in ACB
Auto Reset
Cancelling of fault signalling is provided by push button BPED.
The presence of the fault signal does not prevent closing of
the circuit breaker.
Common Signalling Common Signalling
Separate Signalling Separate Signalling
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