Electronic circuit breaker with withstand capability
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United States of America Patent
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-
Mar 6, 1990
Grant Date -
N/A
app pub date -
Sep 26, 1988
filing date -
Sep 26, 1988
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An electronic circuit breaker having withstand capability. When the fault current exceeds the required withstand level, the mechanism force trips the circuit breaker. The forces generated by a blow-on contact loop are exerted on the various components of the operating mechanism, including the quick trip latch and secondary latch. As the fault current exceeds the required withstand level, the forces on the operating mechanism exceed the spring force holding together the quick trip latch and secondary latch. These two components rotate as one assembly during a trip operation initiated by energizing the trip coil. In the force trip operation, these two components separate unlatching the mechanism and opening the circuit breaker contacts.
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