Circuit breaker rotary handle operator with positive on indicati

Details Circuit breaker rotary handle operator with positive on indicati Circuit breaker rotary handle operator with positive on indicati

1993-06-11

1994-04-12

Donovan, Lincoln

Electricity: magnetically operated switches, magnets, and electr

Electromagnetically actuated switches

Automatic circuit-interrupting devices

200 4314, H01H 7312

Patent

active

053029259

ABSTRACT:
A molded case circuit breaker rotary handle operator allows the circuit breaker handle to be locked when the circuit breaker contacts are open. The handle is prevented from being locked in position when the circuit breaker contacts are welded in their closed condition.

REFERENCES:
patent: 2512505 (1950-06-01), Rowe
patent: 2695934 (1954-11-01), Wills
patent: 3260808 (1966-07-01), Dimond et al.
patent: 4736174 (1988-04-01), Castonguay et al.
patent: 4978816 (1990-12-01), Castonguay et al.

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