H - Electricity – 01 – H
Patent
H - Electricity
01
H
H01H 85/04 (2006.01) H01H 9/10 (2006.01) H01H 9/32 (2006.01) H01H 31/12 (2006.01) H01H 85/042 (2006.01) H01H 85/30 (2006.01) H01H 85/38 (2006.01)
Patent
CA 2106144
ABSTRACT The fuseholder includes a current limiting fuse mounted within a fuse body and a lower contact and hinge assembly. The fuse body has contact assemblies mounted on each end thereof. The lower contact assembly on the fuse body is mounted on a hinge which is rotatably supported on an interchangeable cutout mounting. The current limiting fuse includes a fuse element spirally wound around a spider which extends the length of the fuse body. The fuse element includes a high current fusible element and a low current fuse element. The fusible element includes a plurality of spaced reduced areas and is supported on the spider by support surfaces which are located between adjacent reduced areas of the fusible element. An auxiliary wire also extends the length of the fuse body about the spider. The hinge includes a hinge member rotatably mounted on the interchangeable cutout mounting, a connective member supporting the contact assemblies and fuse body with current limiting fuse, and a latch for latching the hinge member to the connective member in a contracted position. The latch is connected to a trigger wire attached to the lower end of the auxiliary wire to maintain the hinge and connective members in their contracted position. Upon the melting of the trigger wire due to a current overload, the trigger wire releases the latch thereby allowing the connective member to move to an extended position with respect to the hinge member such that the current limiting fuse drops out of the interchangeable cutout mounting.
Hassler Stephen Paul
Johnson Stephen Paul
Lapp John
Cooper Power Systems Inc.
Smart & Biggar
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