Trip mechanism for direct current molded case circuit breaker
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United States of America Patent
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Jun 25, 2019
Grant Date -
Mar 1, 2018
app pub date -
Jul 7, 2017
filing date -
Aug 31, 2016
priority date (Note) -
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status (Latency Note)
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Abstract
Provided is a trip mechanism for DC molded case circuit breaker, in which the insulating distance between the poles increases without any increase in whole product size, thereby reliably providing a trigger output against an over current and a fault current instantaneous breaking required. The trip mechanism includes a trip mechanism part including an instantaneous trip mechanism, the instantaneous trip mechanism including a movable member to operate according to a fault current instantaneous breaking required, and a thermal trip mechanism including a bimetal to operate according to an over current, the trip mechanism part being provided for one of two adjacent poles; a crossbar that is rotatable by contacting and pressing of the movable member of the instantaneous trip mechanism or the bimetal of the thermal trip mechanism; and a shooter that is provided to be rotatable by contacting of the crossbar rotating.
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