Resettable electro-mechanical vacuum fuse

Details Resettable electro-mechanical vacuum fuse Resettable electro-mechanical vacuum fuse

1976-06-07

1977-10-11

Schaefer, Robert K.

Electricity: magnetically operated switches, magnets, and electr

Electromagnetically actuated switches

Electrodynamically actuated

335195, 200147R, 200329, 200144B, H01H 930

Patent

active

040538575

ABSTRACT:
A resettable high-voltage fusing device including a vacuum interrupter and an arrangement of magnetically displaceable rod members which are displaced by the magnetic forces resulting from overload currents flowing through them. For currents below the "blow" rating, a spring arrangement keeps the rods in place by applying axially opposing forces at the ends thereof, and the vacuum interrupter is kept closed. After rod displacement caused by overload current the vacuum interrupter opens in response to one of the springs released by displacement of the rods.

REFERENCES:
patent: 3996438 (1976-12-01), Kurtz

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