Electric circuit breaker having reduced arc energy

Details Electric circuit breaker having reduced arc energy Electric circuit breaker having reduced arc energy

1984-05-10

1985-11-12

Broome, Harold

Electricity: magnetically operated switches, magnets, and electr

Electromagnetically actuated switches

Electrodynamically actuated

335 16, 335192, 335194, H01H 7710

Patent

active

045531196

ABSTRACT:
An electric circuit breaker having fast short circuit response along with reduced arc energy is provided by means of a current limiting contact arm arrangement. The contact arm is arranged to pivot independently of the circuit breaker operating mechanism under the influence of magnetic repulsion forces. A contact spring configuration controls the rate at which the contacts separate, thereby limiting the energy of the arc created upon contact separation.

REFERENCES:
patent: 2944129 (1960-07-01), Cole et al.
patent: 3192344 (1965-06-01), Cole
patent: 3517355 (1970-06-01), Cole
patent: 4458224 (1984-07-01), Kralik et al.

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