Thermally responsive protection apparatus for electric motors

Details Thermally responsive protection apparatus for electric motors Thermally responsive protection apparatus for electric motors

H - Electricity

02

K

H02K 11/00 (2006.01) H01H 37/76 (2006.01)

Patent

CA 2352728

A thermal protection mechanism for electric motors includes a pair of spaced contacts secured to an electrically insulating carrier having a cavity and a surface adjacent to a motor winding. The surface of the carrier has an aperture that forms a thermal passage between the surface of the carrier and the cavity. The contacts are engaged with a fusible electrically conductive pin made of solder that is disposed within the cavity and that interposes along a current path to the windings of a motor. A high winding temperature causes the pin to fuse, thereby terminating operation of the motor.

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