Delayed-action thermal relay

Details Delayed-action thermal relay Delayed-action thermal relay

1983-09-16

1985-07-02

Broome, Harold

Electricity: electrothermally or thermally actuated switches

Electrothermally actuated switches

With bimetallic elements

337102, 361 24, H01H 6102, H01H 7116

Patent

active

045271429

ABSTRACT:
A delayed-action thermal relay, particularly for starting single-phase induction motors, comprises a case of insulating material, a first, a second, and a third terminal within the case, an actuator unit consisting of a heating element of a material with positive temperature coefficient and of a bimetal member, and first and second contacts that are normally closed carried by the bimetal and by the third terminal respectively, said actuator unit being forcibly and adjustably inserted between the first and second terminals.

REFERENCES:
patent: 4334209 (1982-06-01), Dennis
patent: 4365225 (1982-12-01), Olsen et al.
patent: 4422120 (1983-12-01), Kobayashi et al.

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