AIR CIRCUIT BREAKERS - Electrical and Electronics Division

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SPRING CHARGE INDICATION
(�OR ELECTRICAL ACBs)
BREAKER ON-O�� INDICATION
BREAKER AUXILIARY
CONTACTS
POSITION INDICATION
ISOLATED / TEST POSITION
SERVICE POSITION
SERVICE, TEST, ISOLATED POSITION
WIRING DIAGRAMS
SIGNALLING
SIGNALLING �OR VOLTMETRIC/AMPEMETRIC RELEASES
SHUNT RELEASE
UNDER VOLTAGE RELEASE
EARTH �AULT
INDICATING LAMPS
L4-for Under Voltage Trip
L5-for ‘Shunt’ Trip
L6-for ‘Isolated’ and/or ‘Test Position’
L7-for ‘Service Position’
L8-for ‘Spring Discharged’
L9-for ‘Spring Charged’
L10-for ’Breaker On’
L11-for ‘Breaker Off’
L12-for ‘Test’ Position
L13-for ‘Earth-fault’ Trip
B5,B6,B7,B8 - Contactors
BPED - ‘Signal Cancelling’ Push Button
SIGNALLING SWITCHES
C3-for ‘Under Voltage’ Trip
C5-for ‘Shunt’ Trip
C6-for ‘Service’ Position (Left)
C7-for ‘Service’ Position (Right)
C8-for ‘Isolated/Test’ Position (Left)
C9-for ‘Isolated/Test Position (Right)
C12-for ‘Earthfault’ Trip