Trigger mechanism for dual-element fuse

Details Trigger mechanism for dual-element fuse Trigger mechanism for dual-element fuse

1984-09-10

1985-12-17

Broome, Harold

Electricity: electrothermally or thermally actuated switches

Electrothermally actuated switches

Fusible element actuated

337163, H01H 8504

Patent

active

045595135

ABSTRACT:
A generally U-shaped connector is included in a current limiting fuse having first and second interior conductor members. The connector is disposed between the first and second conductor members, and completes an electrical circuit therebetween. The first conductor member has a free end which is received between the legs of the U-shaped connector and is secured thereto by a first mass of heat softenable alloy. The second conductor member underlies a leg of the connector, and is secured thereto by a second mass of heat softenable alloy. A hook-like projection struck out of the bight of the U-shaped connector receives a loop end of a spring which biases the connector for circuit-opening movement away from the first conductor member. Upon conducting a small protracted overcurrent, the conductor members and connector are heated to soften the alloy masses, allowing circuit-opening movement of the spring biased connector away from the first conductor member.

REFERENCES:
patent: 2210036 (1940-08-01), McEntee
patent: 2293953 (1942-08-01), Taylor
patent: 2506304 (1950-05-01), Ludwig

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