Thermal fuse

Details Thermal fuse Thermal fuse

1975-09-18

1978-06-13

Harris, George

Electricity: electrothermally or thermally actuated switches

Electrothermally actuated switches

Shunt or short circuit completion devices

337 80, 337401, H01H 8504

Patent

active

040952070

ABSTRACT:
An electric switch for thermal overload protection includes a meltable pellet containing a pool of mercury which establishes electrical contact between two lead-in wires. When the pellet is heated to its melting point, the mercury becomes unconfined and the circuit is opened.

REFERENCES:
patent: 1228408 (1917-06-01), Cleaver
patent: 2342320 (1944-02-01), Ziegel
patent: 3278713 (1966-10-01), Grupen
patent: 3289126 (1966-11-01), Hurvitz
patent: 3341676 (1967-09-01), Schwarz

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