Circuit breaker with bell alarm and breaker lockout accessory

Details Circuit breaker with bell alarm and breaker lockout accessory Circuit breaker with bell alarm and breaker lockout accessory

1975-10-30

1977-01-04

Harris, George

Electricity: magnetically operated switches, magnets, and electr

Electromagnetically actuated switches

Automatic circuit-interrupting devices

335169, 335170, H01H 7706

Patent

active

040017397

ABSTRACT:
A circuit breaker includes an operating mechanism having powerful mechanism springs to achieve the requisite contact pressure for high current carrying capacity. A rotary handle resets the operating mechanism via a reciprocating slide and latching mechanism, while loading the mechanism springs. Return of the handle to its original position achieves rapid closure of the circuit breaker contacts. The circuit breaker is equipped with a trip solenoid and an accessory which includes a bell alarm switch and a breaker lockout operating automatically in response to tripping of the circuit breaker by the trip solenoid.

REFERENCES:
patent: 3139495 (1964-06-01), Harder
patent: 3264428 (1966-08-01), Hollyday
patent: 3377574 (1968-04-01), Brumfield et al.

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