Fuse

Details Fuse Fuse

1993-10-12

1995-05-30

Donovan, Lincoln

Electricity: electrothermally or thermally actuated switches

Electrothermally actuated switches

Fusible element actuated

337276, H01H 8538

Patent

active

054205603

ABSTRACT:
An improved compact fuse has a fusible metal wire stretched between a pair of metal terminals. The wire and the portion of the terminals to which the wire is connected are enclosed in an envelope made of insulation material. The ends of the terminals protrude outside the envelope. The envelope is filled with silicon cellular resin to cover the wire and create many sectioned spaces that dissipate the thermal energy generated when the wire melts from overcurrent, thereby preventing damage to the envelope. When heated by vaporization of the fusible metal wire, the silicon cellular resin generates byproducts which rapidly extinguish the arc.

REFERENCES:
patent: 3179853 (1965-04-01), Kozacka
patent: 3840836 (1974-10-01), Link
patent: 4563666 (1986-01-01), Borzoni
patent: 4709222 (1987-11-01), Morita et al.
patent: 4757296 (1988-07-01), Brown et al.

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