Current-limiting circuit breaker

Details Current-limiting circuit breaker Current-limiting circuit breaker

1973-11-12

1976-01-27

Scott, James R.

Electricity: circuit makers and breakers

Liquid contact

Time delay

H01h 300

Patent

active

039354091

ABSTRACT:
An electric circuit breaker includes thermal magnetic trip means for causing circuit interruption upon the occurrence of overload and minor short-circuit conditions, and also provides current limiting action under major short-circuit conditions by providing two pairs of engageable contacts, wherein one contact of each pair is movable to a circuit interrupting position by the circuit breaker operating mechanism and the other contact of each pair is magnetically attracted to a circuit interrupting position in response to short-circuit currents exceeding a predetermined magnitude.

REFERENCES:
patent: 3783215 (1974-01-01), Brumfield
patent: 3805199 (1974-04-01), Tazuki
patent: 3849751 (1974-11-01), Link et al.

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