Thermal switch

Details Thermal switch Thermal switch

H - Electricity

01

H

306/187

H01H 37/52 (2006.01) H01H 37/00 (2006.01) H01H 3/00 (2006.01) H01H 11/00 (2006.01) H01H 37/54 (2006.01)

Patent

CA 1160267

Abstract of the Disclosure A thermal switch comprising a plurality of outer terminals respectively having a fixed contact, a movable contact spring divided into a plurality of mutually parallel contact spring parts each having a movable contact for contacting with and separating from the fixed contact and a plurality of bimetals respectively operating at differently set temperatures and provided so as to independently actuate the respective contact spring parts, whereby resetting-type contacts are reliably opened and closed in response to fluctuations in the atmospheric temperature through one of the bimetals which has a relatively lower first set-temperature and, when the particular bimetal of the relatively lower first set-temperature fails to operate and the atmospheric temperature further rises, non-resetting- type contacts are reliably opened through the other bimetal having a relatively higher second set-temperature.

388029

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