Hermetic motor protector

Details Hermetic motor protector Hermetic motor protector

1977-09-15

1979-09-11

Broome, Harold

Electricity: electrothermally or thermally actuated switches

Electrothermally actuated switches

With bimetallic elements

337372, 337380, H01H 3704, H01H 3754

Patent

active

041677218

ABSTRACT:
A thermally responsive motor protector device particularly adapted for protecting a small electrical motor against both overcurrent and overtemperature conditions in an environment requiring hermetic sealing of the protector has a structure which provides the device with the desired hermetic seal and with a very small thermal mass for achieving the desired speed of response to overcurrent and overtemperature conditions in a small motor while also permitting mass production and automatic calibration of the device at low cost and inexpensive installation of the device without risk of loss of calibration.

REFERENCES:
patent: 3453577 (1969-01-01), D'Entremont
patent: 3959762 (1976-05-01), Senor

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