Circuit breaker including forced contact parting mechanism capab

Details Circuit breaker including forced contact parting mechanism capab Circuit breaker including forced contact parting mechanism capab

1991-07-11

1993-10-12

Donovan, Lincoln

Electricity: magnetically operated switches, magnets, and electr

Electromagnetically actuated switches

Tripping means

335 21, H01H 900

Patent

active

052529339

ABSTRACT:
Disclosed is a circuit breaker including a first linking member for switching fixed contacts provided in a main current path. The first linking member is operated by a circuit switching mechanism using a voltage-operated electromagnet, a forced contact parting mechanism upon short circuit condition using a current-operated electromagnet connected in series to the main path, and a spring releasing mechanism responsive to flow of overcurrent for operating. The forced contact parting mechanism upon short circuit condition includes a link mechanism including self-retaining/self-resetting function between the first linking member and the current-operated electromagnet.

REFERENCES:
patent: 4631507 (1986-12-01), Guery et al.
patent: 4947145 (1990-08-01), Ohishi et al.

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