Miniature current limiting circuit breaker

Details Miniature current limiting circuit breaker Miniature current limiting circuit breaker

1980-01-23

1981-06-30

Broome, Harold

Electricity: magnetically operated switches, magnets, and electr

Electromagnetically actuated switches

Automatic circuit-interrupting devices

335 16, 335 23, H01H 7512

Patent

active

042765269

ABSTRACT:
A miniature current limiting circuit breaker incorporates double break circuit interrupting contacts capable of being abruptly separated by a high fault current responsive solenoid acting to first trip the breaker mechanism and then forcibly effect contact separation. The arc chamber is constructed to achieve enhanced blowout of the arc into the arc chute and to develop gas pressures acting to accelerate contact separation. The circuit breaker is trip-free and includes both thermal tripping and internal common tripping capabilities.

REFERENCES:
patent: 3483343 (1969-12-01), Heft
patent: 3581253 (1971-05-01), Beaudoin et al.
patent: 4071836 (1978-01-01), Cook et al.
patent: 4220935 (1980-09-01), Wafer et al.

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