High current capacity sub-miniature fuse

Details High current capacity sub-miniature fuse High current capacity sub-miniature fuse

1988-12-15

1990-02-06

Broome, H.

Electricity: electrothermally or thermally actuated switches

Electrothermally actuated switches

Fusible element actuated

337199, H01H 8538

Patent

active

048991236

ABSTRACT:
A sub-miniature fuse having a fusible conductor which will fuse under an over-current condition within a pressure-tight chamber. A metal surface is positioned near the fusible conductor within the chamber and is formed and positioned relative to the fusible conductor so that during the switching off of the fuse, any arc created between the fused ends jumps over to the metal surface. Thus, at least one secondary arc is created which burns against the metal surface as a shunt line. By melting a part of the metal surface, sufficient heat is absorbed that the secondary arc is quenched.

REFERENCES:
patent: 3110787 (1963-11-01), Borzoni
patent: 4417226 (1983-11-01), Asdollahi et al.

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