Fuse with a free standing fuse element

Details Fuse with a free standing fuse element Fuse with a free standing fuse element

H - Electricity

01

H

306/144

H01H 85/02 (2006.01) H01H 85/042 (2006.01) H01H 85/08 (2006.01)

Patent

CA 1077095

ABSTRACT OF THE DISCLOSURE A high voltage combination fuse has a current limiting section which has a free standing, helical coil of fusible wire material. The support for the free standing coil comes only from the pulverulent arc quenching material which fills the fuse casing and surrounds the coil. The coil has a foot portion and a head portion of increased cross- section to avoid arcing in the immediate vicinity of the end caps. The foot and head portions are preferably formed by doubling back a length of wire at the respective end and wrapping the tip of the doubled back length around the wire. The method for making the fuse is described in detail.

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