Two-pole compartmentalized ground fault miniature circuit breake

Details Two-pole compartmentalized ground fault miniature circuit breake Two-pole compartmentalized ground fault miniature circuit breake

1994-06-23

1995-09-26

Donovan, Lincoln

Electricity: magnetically operated switches, magnets, and electr

Electromagnetically actuated switches

Automatic circuit-interrupting devices

335202, 335201, H01H 7300

Patent

active

054537231

ABSTRACT:
A miniature circuit breaker with two thermal-magnetic poles has an electronic trip device providing ground fault, and sputtering arc fault (if desired), protection located entirely in a large central compartment of a molded housing between compartments housing the two mechanical poles. The current rating of the circuit breaker is increased by a gas vent channel extending between the two mechanical pole compartments adjacent the respective breaker contacts which allows gases generated by arcing during current interruption to expand into both outer compartments, thereby permitting the circuit breaker to interrupt larger short circuit currents. The gas vent channel extends through, but does not communicate with, the central electronics compartment.

REFERENCES:
patent: 3566318 (1971-02-01), Gelzheiser et al.
patent: 3812400 (1974-05-01), Gryctko et al.
patent: 3999103 (1976-12-01), Misencik et al.
patent: 4686600 (1987-08-01), Morris et al.
patent: 5159304 (1992-10-01), Yamagata et al.
patent: 5260676 (1993-11-01), Patel et al.
patent: 5276418 (1994-01-01), Klosowiak et al.

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