25
Air Circuit Breakers
BT2 series
Wiring diagram
Possible operation pattern
Circuit breaker 1
Circuit breaker 2
2m (max)
Accessories
Choice of mechanical interlock accessories
• Two sets of circuit breakers put horizontally and interlocked
with steel cable or stacked and interlocked with connecting
rods
(the style of interlock between two sets of circuit breakers
with connecting rods and aperture dimensions of their
bases see the counterpart of three sets of circuit breakers)
1QF 2QF
0
0
0
1
1
0
1QF
2QF
• Three sets of circuit breakers stacked and interlocked
with connecting rods or three sets of circuit breakers put
horizontally and interlocked with steel cable (without BT2-
1600).
• Stacked and interlocked
Wiring diagram
Possible operation Pattern
Pattern one: three sets of power supply can only
close one sets of circuit breaker
Pattern two: two sets of common power supply plus
one sets of standly power supply
Pattern three: two sets of power supply plus a piece
of coupling busbar
