Circuit breaker with one-way adjustment of tripping current leve

Details Circuit breaker with one-way adjustment of tripping current leve Circuit breaker with one-way adjustment of tripping current leve

1974-10-10

1976-08-17

Broome, Harold

Electricity: magnetically operated switches, magnets, and electr

Electromagnetically actuated switches

Tripping means

335 42, 337 57, 337 82, 337 94, H01H 7174

Patent

active

039757013

ABSTRACT:
A molded case circuit breaker having a solid-state trip unit adjustable over a variety of ratings. One-way adjustment is provided, permitting a reduction in the rating of the circuit breaker and preventing an increase in the rating. A ratchet mechanism and a one-way screw mechanism are provided to implement the one-way adjustment.

REFERENCES:
patent: 3240903 (1966-03-01), Groves et al.
patent: 3593234 (1971-07-01), Charbonneau et al.

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