Ground fault accessory for a molded case circuit breaker

Details Ground fault accessory for a molded case circuit breaker Ground fault accessory for a molded case circuit breaker

1984-03-27

1986-02-04

Broome, Harold

Electricity: magnetically operated switches, magnets, and electr

Electromagnetically actuated switches

Automatic circuit-interrupting devices

335 20, H01H 8302, H01H 7306

Patent

active

045688990

ABSTRACT:
A ground fault accessory for a molded case circuit breaker is provided by converting a shunt trip accessory to automatically trip the breaker when a ground fault occurs. A printed circuit mounted in the housing with the shunt trip eliminates the need for a separate ground fault relay. The ground fault relay and the shunt trip are made available in the same accessory requiring no additional mounting of equipment or external wiring while conserving space which is scarce in load centers and other locations where both ground fault and shunt trip are desired.

REFERENCES:
patent: 3784940 (1974-01-01), DeTorre
patent: 3999103 (1976-12-01), Misencik et al.
patent: 4093977 (1978-06-01), Wilson
patent: 4112270 (1978-09-01), Rys
patent: 4203760 (1980-06-01), DiMarco et al.
patent: 4281359 (1981-07-01), Bayer et al.
patent: 4363063 (1982-12-01), Erickson
patent: 4412193 (1983-10-01), Bienwald et al.

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