Motor protector

Electricity: electrothermally or thermally actuated switches – Electrothermally actuated switches – With bimetallic elements

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Details

361 22, 361 24, 361105, 337103, H01H 6107, H01H 7116, H02H 504

Patent

active

049085956

ABSTRACT:
A motor protector includes a case having an open end, a terminal plate secured to the case and having a pair of fixed contacts, a disc-shaped bimetal supported in the case and having a pair of movable contacts engaged with and disengaged from the fixed contacts respectively, a temperature-sensitive switch disposed so as to close the open end of the case and sensing the temperature of a sensed object to be turned on when the temperature thereof reaches a predetermined value, and a heater disposed in the vicinity of the bimetal and connected in series to the temperature-sensitive switch.

REFERENCES:
patent: 2189996 (1940-02-01), Riche
patent: 4422120 (1983-12-01), Kobayashi et al.
patent: 4456941 (1984-06-01), Fraser, Jr. et al.

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