Circuit breaker with self contained adjustable bimetal

Details Circuit breaker with self contained adjustable bimetal Circuit breaker with self contained adjustable bimetal

1980-08-29

1982-04-20

Broome, Harold

Electricity: electrothermally or thermally actuated switches

Electrothermally actuated switches

With bimetallic elements

335 43, 335 45, H01H 7116

Patent

active

043261833

ABSTRACT:
An electric circuit breaker including a U-shaped bimetal operably associated with a trip crossbar to effect rotation of the crossbar and subsequent opening of breaker contacts in response to heating of the bimetal to a predetermined temperature by the passage of an electrical current of a selected magnitude therethrough. The bimetal provides self-contained adjustment through the use of a calibration screw threaded into the lower leg of the bimetal which exerts force through an insulating member to the upper leg of the bimetal permitting ready calibration of the bimetal according to ampere rating of the particular circuit breaker.

REFERENCES:
patent: 2370024 (1945-02-01), Dyer
patent: 2406325 (1946-08-01), Dorfman
patent: 2667548 (1954-01-01), Page
patent: 3341791 (1967-09-01), Leonard

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