Circuit breaker lock-out block

Details Circuit breaker lock-out block Circuit breaker lock-out block

1995-01-13

1996-05-28

Walczak, David J.

Electricity: circuit makers and breakers

Switch activation inhibitor

Actuator locking device

200 43160, 200 43170, H01H 928

Patent

active

055213448

ABSTRACT:
A circuit breaker handle locking block is arranged on a top of circuit breaker with the circuit breaker operating handle extending through a clearance slot in the locking block. The sides of the circuit breaker handle slot are ramped to conform to the angle defined between the circuit breaker handle and the top of the circuit breaker when the circuit breaker handle is in the OFF position. The circuit breaker handle extends through the clearance slot in a nearly press-fit relation so that the circuit breaker handle is restrained from moving to the ON position until the locking block is removed.

REFERENCES:
patent: 4467152 (1989-08-01), Gordy
patent: 4978816 (1990-12-01), Castonguay et al.
patent: 5079390 (1992-01-01), Costanzo et al.
patent: 5122624 (1992-06-01), Benda
patent: 5256838 (1993-10-01), Benda
patent: 5310969 (1995-05-01), Turek et al.

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