Circuit breaker including forced contact parting mechanism capable of self-retaining under short circuit condition
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United States of America Patent
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Oct 12, 1993
Grant Date -
N/A
app pub date -
Jul 11, 1991
filing date -
Jul 16, 1990
priority date (Note) -
In Force
status (Latency Note)
Importance
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.
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