Tin-free current limiting fuse

Details Tin-free current limiting fuse Tin-free current limiting fuse

H - Electricity

01

H

306/149

H01H 85/06 (2006.01) H01H 85/08 (2006.01)

Patent

CA 1097708

39,142 TIN-FREE CURRENT LIMITING FUSE ABSTRACT OF THE DISCLOSURE A current limiting fuse having a number of par- allel current conducting tin-free fuse links. One of the fuse links is disposed in the centralmost part of the fuse along the longitudinal axis thereof. The other parallel fuse links are radially or circumferentially disposed around the centrally located fuse link. Ideally, all fuse links carry equal currents; however, the centralmost fuse link operates at a relatively higher temperature than those which surround it. Consequently, the central fuse link will melt first during an overload condition, transferring the over- load current to the other surrounding fuse links which quickly blow because of the incremental change in current therethrough.

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