Circuit protection fuse

Details Circuit protection fuse Circuit protection fuse

1977-05-23

1979-04-17

Harris, George

Electricity: electrothermally or thermally actuated switches

Electrothermally actuated switches

Fusible element actuated

337295, H01H 8504

Patent

active

041503546

ABSTRACT:
The fuse for the protection of electric circuits comprises a casing filled with quartz sand, terminal contacts and a fuse link made of aluminium or an aluminium alloy. The ratio of the mass of the quartz sand to the mass of the aluminium material of the fuse link is at least 40:1. The fuse link is made of strip metal conductors, the widest current-conducting section of each strip having a width-to-thickness ratio within the range of 2:1 to 100:1.

REFERENCES:
patent: 1084706 (1914-01-01), Murray
patent: 3849755 (1974-11-01), Blewitt et al.

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