H - Electricity – 01 – H
Patent
H - Electricity
01
H
306/142, 306/157
H01H 85/08 (2006.01) H01H 85/10 (2006.01) H01H 85/38 (2006.01)
Patent
CA 1202056
ABSTRACT OF THE DISCLOSURE An electrical fuse wherein one or more portions of the fuse element are provided with two adjacent parallel weak spots separated by dielectric material or air gap, and arranged such that the direction of current flow in one of the adjacent weak spots is opposite that in the other adjacent weak spot, such that a magnetic field is generated which produces a separating force between the two weak spots. Arcs formed during the fusing of the weak spots are forced apart by the generated magnetic field thus increasing the arcs path lengths which increases arc voltage thereby forcing arc current to zero.
442357
Mcgraw-Edison Company
Shapiro Cohen
LandOfFree
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