Electric fuse for elevated circuit voltages

Details Electric fuse for elevated circuit voltages Electric fuse for elevated circuit voltages

1975-04-07

1976-04-06

Harris, George

Electricity: electrothermally or thermally actuated switches

Electrothermally actuated switches

Fusible element actuated

337274, 337279, H01H 8504

Patent

active

039493423

ABSTRACT:
A fuse for elevated circuit voltages is provided with an arrangement or array of gas-evolving beads intended to improve the performance of the fuse under major fault current conditions. The fusible element is wound around a space in the shape of a four-sided prism, each full turn including four quarter sections. The fusible element supports a plurality of beads of a gas-evolving material that are positioned on all four sides of said space and substantially equally distributed among the four sides thereof. Said beads are mounted periodically on said quarter sections of said fusible element in such a way that bead-bearing quarter sections of said fusible element alternate with equal numbers of non-bead-bearing quarter sections thereof.

REFERENCES:
patent: 2382271 (1945-08-01), Suits et al.
patent: 3012121 (1961-12-01), Hicks
patent: 3810062 (1974-05-01), Kozacka

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