Motor starting and protecting apparatus

Details Motor starting and protecting apparatus Motor starting and protecting apparatus

H - Electricity

02

H

306/169, 318/51

H02H 7/08 (2006.01) H01H 61/00 (2006.01) H01H 81/02 (2006.01) H02P 1/42 (2006.01)

Patent

CA 1138026

Abstract of the Disclosure A combination starting and protecting device particularly useful with split phase motors such as those used with refrigeration compressors is disclosed in which an element of material having a positive temperature coefficient (PTC) of resistivity characteristic and a thermally respon- sive switch are disposed in the same housing. A thermal coupling of a preselected value between the PTC element and the thermally responsive switch is provided so that a desired reset or "off" time is obtained for the thermally responsive switch without affecting the "on" time.

268310

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