Glass enclosed three lead circuit breaker

Details Glass enclosed three lead circuit breaker Glass enclosed three lead circuit breaker

1980-11-21

1982-06-08

Broome, Harold

Electricity: electrothermally or thermally actuated switches

Electrothermally actuated switches

With bimetallic elements

337102, H01H 4502, H01H 6102

Patent

active

043342094

ABSTRACT:
A circuit breaker comprises a hermetically sealed glass envelope having three lead-in wires extending therethrough. Within the envelope, a stationary contact is fastened to one of the wires, a thermostatic element to another of the wires, and a heater to the third wire. The circuit breaker permits simultaneous protection of two windings of a motor, for example, the main winding and the start winding. The thermostatic element provides protection for one of the windings and the combination of the thermostatic element and heater provides protection for the other.

REFERENCES:
patent: 3474372 (1969-10-01), Davenport et al.
patent: 3555478 (1971-01-01), Dennis
patent: 3573697 (1971-04-01), Dennis et al.

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