Circuit breaker operating handle interlock

Electricity: circuit makers and breakers – Switch activation inhibitor – Actuator locking device

Patent

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Details

411401, H01H 928

Patent

active

054498678

ABSTRACT:
A molded case circuit breaker handle interlock unit is arranged on the top surface of the circuit breaker to lockingly prevent intentional displacement of the circuit breaker operating handle from either the ON or OFF positions. The movable clip on the unit is attached to the circuit breaker handle to prevent tampering.

REFERENCES:
patent: 2246457 (1941-06-01), Schultz
patent: 4554421 (1985-11-01), Grunert et al.
patent: 4978816 (1990-12-01), Castonguay
patent: 5324897 (1994-06-01), Melgoza et al.

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