Electronic circuit breaker with withstand capability

Details Electronic circuit breaker with withstand capability Electronic circuit breaker with withstand capability

1988-09-26

1990-03-06

Goldberg, E. A.

Electricity: magnetically operated switches, magnets, and electr

Electromagnetically actuated switches

Tripping means

335195, H01H 900

Patent

active

049069675

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.

REFERENCES:
patent: 3440580 (1969-04-01), Molenaar
patent: 3469216 (1969-09-01), Shiraishi
patent: 4644438 (1987-02-01), Puccinelli

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