Trip-free manual reset thermostat

Details Trip-free manual reset thermostat Trip-free manual reset thermostat

H - Electricity

01

H

306/182

H01H 37/54 (2006.01) H01H 37/60 (2006.01)

Patent

CA 1204805

TRIP-FREE MANUAL RESET THERMOSTAT ABSTRACT OF THE DISCLOSURE A trip-free manual reset thermostat is disclosed in which a bimetal snap disc is positioned so that one edge portion engages a movable contact support arm and opens the contacts when the disc operates to its operative condition. A manual reset member is operable to apply a force to the center portion of the disc in the direction of contact opening, causing the edge of the disc to engage fixed stops and to thereafter move the disc to its reset position. The resetting force is applied in the same direction as contact opening movement so that the operation of the reset member maintains the contacts in an open condition even when the disc has been pushed through to the reset condition. The manual reset member is, therefore, incapable of causing switch closure.

435070

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