Electric fuse, particularly for use in connection with solid sta

Details Electric fuse, particularly for use in connection with solid sta Electric fuse, particularly for use in connection with solid sta

1980-10-27

1982-03-30

Harris, George

Electricity: electrothermally or thermally actuated switches

Electrothermally actuated switches

Fusible element actuated

337162, 337292, H01H 8504

Patent

active

043227040

ABSTRACT:
Electric fuses according to this invention aim to increase the ratio between current-carrying capacity and i.sup.2 .multidot.t values. This means, in other words, to increase the current-limiting action for any given current rating.
The fusible element of such fuses comprises an axially inner substantially planar portion of silver having at least one short-circuit neck adapted to initiate circuit interruption when said neck reaches approximately the fusing temperature of silver. The fusible element of such fuses further comprises a pair of non-planar axially outer portions of copper each having a larger width and a larger surface than said axially inner portion. The axially inner portion and the axially outer portions are conductively interconnected.

REFERENCES:
patent: 3140371 (1964-07-01), Johann et al.
patent: 3418614 (1968-12-01), Krueger
patent: 3543209 (1970-11-01), Kozacka

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