Circuit breaker operating handle interlock

Details Circuit breaker operating handle interlock Circuit breaker operating handle interlock

1993-08-02

1994-09-20

Barrett, Glenn T.

Electricity: circuit makers and breakers

Switch activation inhibitor

Actuator locking device

200318, H01H 928

Patent

active

053491459

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:
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patent: 3595040 (1971-07-01), Curl
patent: 4733029 (1988-03-01), Kobayashi et al.
patent: 4740768 (1988-04-01), Morris et al.
patent: 4754247 (1988-06-01), Raymont et al.
patent: 4882456 (1989-11-01), Houanic et al.
patent: 4897515 (1990-01-01), Zubar et al.
patent: 4978816 (1990-12-01), Castonguay
patent: 5113043 (1992-05-01), Morris
patent: 5290979 (1994-03-01), Grass

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