High voltage electric fuse

Details High voltage electric fuse High voltage electric fuse

1983-04-08

1984-12-04

Broome, Harold

Electricity: electrothermally or thermally actuated switches

Electrothermally actuated switches

Fusible element actuated

337158, 337160, H01H 8504

Patent

active

044867344

ABSTRACT:
This high voltage fuse comprises a pair of spaced terminals and a fusible conductive element connected between the terminals. At spaced locations along the length of the fusible element, there are bodies of a material that exothermically reacts when heated to a predetermined temperature. Connected between the terminals independently of the fusible element is a triggering circuit. The bodies of exothermic material are connected in good heat-transfer relationship with the triggering circuit and the fusible element so that the heating effect of current through the triggering circuit upon disruption of the fusible element causes the material of said bodies to exothermically react and thus cause further disruption of the fusible element at additional locations respectively located adjacent said bodies.

REFERENCES:
patent: 1927397 (1933-09-01), Girdwood
patent: 2800554 (1957-07-01), Dannenberg et al.
patent: 3705373 (1972-12-01), Cameron
patent: 3958206 (1976-05-01), Klint
patent: 4357588 (1982-11-01), Leach et al.
patent: 4388603 (1983-06-01), Hassler et al.

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