Current limiting fuse and dropout fuseholder

Details Current limiting fuse and dropout fuseholder Current limiting fuse and dropout fuseholder

H - Electricity

01

H

H01H 85/44 (2006.01) H01H 31/12 (2006.01) H01H 85/12 (2006.01) H01H 85/38 (2006.01)

Patent

CA 2139023

Abstract of the Disclosure A current-limiting dropout fuseholder includes multiple current paths through the fuse body. A primary current path includes a high current fusible element. A secondary current path in parallel with the primary path includes a triggering conductor that extends outside the fuse body and is connected to a moveable support. The second current path further includes a first spark gap for severing the triggering conductor upon the occurrence of a fault and the shifting of the fault current from the primary current path to the second current path. A second spark gap formed between the primary and the second current paths ensures that the fault current flows across the first spark gap for a time sufficient to sever the triggering conductor, thereby ensuring that dropout will occur.

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