Circuit breaker having improved operating mechanism

Details Circuit breaker having improved operating mechanism Circuit breaker having improved operating mechanism

1975-10-30

1977-01-04

Harris, George

Electricity: magnetically operated switches, magnets, and electr

Electromagnetically actuated switches

Tripping means

335191, 200153G, H01H 920, H01H 346

Patent

active

040017427

ABSTRACT:
A circuit breaker includes an operating mechanism having powerful mechanism springs to achieve the requisite contact pressures for high current carrying capacity. A single crank of a rotary handle through a relatively small arc of 120.degree. resets the operating mechanism via a reciprocating slide and a latching mechanism, while loading the mechanism springs. Return of the handle to its original position shifts the line of action of the springs such as to abruptly straighten a toggle and achieve rapid closure of the circuit breaker contacts. The latching mechanism is equipped with plural circuit breaker tripping capabilities, together with a lockout and bell alarm switch accessory.

REFERENCES:
patent: 3368053 (1968-02-01), Groves
patent: 3377574 (1968-04-01), Brumfield et al.
patent: 3492614 (1970-01-01), DeAngelo et al.
patent: 3783215 (1974-01-01), Brumfield
patent: 3849751 (1974-11-01), Link et al.

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