Thermal cut-off fuse

Details Thermal cut-off fuse Thermal cut-off fuse

H - Electricity

01

H

306/130

H01H 37/76 (2006.01) H01H 29/18 (2006.01)

Patent

CA 1090853

Abstract of the Disclosure A thermal cut-off fuse comprises a housing, a pair of terminals opposed to each other within the housing, a sliding means constantly urged by a spring, a thermal pellet adapted to melt at a fixed elevated temperature and remain in a solid state at normal room temperature and, by virtue of the solid state, restrain the sliding means from the forward motion imparted thereto by the spring and consequently serve to form a continuous space between the pair of terminals, and a conductive material disposed within the space to establish electric continuity between the terminals. When the ambient temperature is elevated to reach the fixed level, the thermal pellet melts, to release the sliding means and allow it to move under the force of the spring into a position where it severs the continuous space and conse- quently breaks the electric continuity between the two terminals.

315630

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