Surge arrestor fail safe thermal overload mechanism

Details Surge arrestor fail safe thermal overload mechanism Surge arrestor fail safe thermal overload mechanism

H - Electricity

01

H

H01H 79/00 (2006.01) H01R 4/24 (2006.01) H01R 13/52 (2006.01) H01T 1/14 (2006.01) H04M 3/18 (2006.01) H04Q 1/02 (2006.01)

Patent

CA 2139327

A spring member (32) and associated channel member (28) bias a solder billet (22) into engagement with a ground electrode (16) of the surge arrestor. When the solder melts in response to a thermal overload condition the channel member (28) causes molten solder from the billet to flow preferentially along a path establishing a low resistance short circuit between the electrodes. Flow ofthe solder to desired locations is enhanced by solder flux, which preferably is of rosin type having substantial dielectric properties.

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