Ground fault circuit breaker with trip indication

Details Ground fault circuit breaker with trip indication Ground fault circuit breaker with trip indication

1976-03-11

1977-07-19

Broome, Harold

Electricity: magnetically operated switches, magnets, and electr

Electromagnetically actuated switches

Automatic circuit-interrupting devices

335 17, 361115, H01H 8302

Patent

active

040371859

ABSTRACT:
A ground fault circuit interrupting (GFCI) device includes a conventional circuit breaker equipped with a trip mechanism operable automatically to open the breaker contacts in response to overcurrent conditions. A GFCI module, responsive to ground leakage current, actuates a trip solenoid to open the breaker contacts via the trip mechanism in response to a ground fault. An indicator, carried by linkage interconnecting the solenoid and trip mechanism, is moved into registry with an opening in the breaker case only upon actuation of the solenoid to thus indicate the occurrence of a ground fault trip function.

REFERENCES:
patent: B340170 (1976-03-01), Douglass et al.
patent: 3970975 (1976-07-01), Gryctko

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