Miniature time-delay fuse

Details Miniature time-delay fuse Miniature time-delay fuse

H - Electricity

01

H

306/157

H01H 85/04 (2006.01) H01H 85/08 (2006.01) H01H 85/18 (2006.01)

Patent

CA 1047078

MINIATURE TIME-DELAY FUSE Abstract of the Disclosure A time-delay fuse is provided comprising a glass or ceramic tube sealed at both ends with sealing means such as, e.g., ferrules. An elongated generally cylindrical core member, made from a highly heat conductive material (a sintered blend of aluminum oxide and magnesium oxide spinel), is diagonally dis- posed in said tube and rigidly fixed at both ends in intimate contact with said sealing means. The fuse also comprises a wire strand spirally wound on said elongated core member. The wire strand is made by winding a first metallic wire element over a second mutually fusible wire element and is soldered at both ends with a high melting solder element. -1-

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