H - Electricity – 01 – H
Patent
H - Electricity
01
H
306/136
H01H 85/36 (2006.01) H01H 85/50 (2006.01)
Patent
CA 1189117
ELECTRIC FUSE HAVING HIGH AMBIENT TEMPERATURE INTERRUPTING CAPABILITY Abstract of the Disclosure A low voltage cartridge fuse having the capabillty of protecting an electric circuit from both major fault currents and overload currents, as well as opening the electric circuit when the ambient temperature surrounding the fuse exceeds a predetermined value. The fuse has a tubular casing enclosed by a pair of end terminals. The current path through the fuse includes a short circuit interrupting element having notched restrictions connected to one of the end terminals by a first relatively high temperature melting point solder joint. The other end of the short circuit element is connected to a plunger contact by a first relatively low temperature melting point solder joint. The plunger is positioned within a metal sleeve to which it is connected by a second relatively low temperature melting point solder joint. The sleeve is in turn connected at one end to the other end terminal of the fuse by a second relatively high temperature melting point solder joint. A spring element positioned inside the metal sleeve cooperates with the sleeve and the plunger to bias the plunger in a manner tending to break both of the low melting point solder joints. -1-
423166
Ga-Tek Inc. (doing Business As Gould Electronics Inc.)
Kappel Ludlow
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