Adjustable circuit breaker with draw out interlock

Details Adjustable circuit breaker with draw out interlock Adjustable circuit breaker with draw out interlock

1989-09-22

1990-08-21

Macon, Robert S.

Electricity: circuit makers and breakers

Interlocking

Between plural switches

H01H 3342

Patent

active

049508482

ABSTRACT:
A draw out interlock comprises an elongated interlock member which is coupled to the manual trip mechanism of a circuit breaker. The interlock member is springed bias to an extended position where it projects through the back wall of the circuit, but is retained in a retracted position by the surface against which the circuit breaker is mounted. As the circuit breaker is removed from the mounting surface, the interlock member extends actuating the manual trip mechanism and interrupting current before the circuit breaker becomes disconnected from the protected conductor to prevent arcing at the disconnects.

REFERENCES:
patent: 3772489 (1973-11-01), Wilson
patent: 4630019 (1986-12-01), Maier et al.

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