Form fitting arc barrier for fuse links

Details Form fitting arc barrier for fuse links Form fitting arc barrier for fuse links

1995-06-07

1997-01-21

Picard, Leo P.

Electricity: electrothermally or thermally actuated switches

Electrothermally actuated switches

Fusible element actuated

337165, H01H 8538

Patent

active

055963064

ABSTRACT:
Fuses and a subassembly component for fuses. The fuse includes an insulating housing, a short circuit fusible element, and an arc barrier-forming body. The arc barrier-forming body is fitted around, and intimately surrounds a portion of the short-circuit fusible element. The arc barrier-forming body is formed from a silicone rubber sealant which is free flowing at room temperature but upon exposure to air increases in viscosity until it essentially becomes a solid. The arc barrier-forming body provides protection against "burn-back" within the fuse.

REFERENCES:
patent: 4533895 (1985-08-01), Kowalik et al.
patent: 4636765 (1987-01-01), Krueger
patent: 5245308 (1993-09-01), Herbias
patent: 5345210 (1994-09-01), Swensen et al.

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