Carbon-glass fuse

Details Carbon-glass fuse Carbon-glass fuse

1997-10-03

1999-08-10

Picard, Leo P.

Electricity: electrothermally or thermally actuated switches

Electrothermally actuated switches

Fusible element actuated

337241, 337296, 337295, 337159, H01H 8506, H01H 8508, H01H 85055

Patent

active

059365099

ABSTRACT:
The fusible element of an electrical fuse is made from carbon glass. The carbon glass melts and pulls apart safely when the fuse blows, so the fusible element normally does not need an enclosure. The carbon glass glows and emits light when current flowing therethrough approaches the fuse's current-carrying capacity, thereby acting as a current sensor and a warning indicator that the fuse is about to blow.

REFERENCES:
patent: 2556616 (1951-06-01), Ellis
patent: 3813232 (1974-05-01), Forker
patent: 4180723 (1979-12-01), Szupillo
Brochure Advertisement: SIGRADUR.RTM., The Glassy Carbon from SIGRI, SGL Carbon Group Corporation, 900 Theresia Street, St. Marys, PA 15857, pp. 1-9.

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