Magnetic-blast arc extinguishing device having permanent magnets

Details Magnetic-blast arc extinguishing device having permanent magnets Magnetic-blast arc extinguishing device having permanent magnets

1974-08-12

1976-04-27

Macon, Robert S.

Electricity: circuit makers and breakers

Liquid contact

Time delay

H01H 3318, H01H 944

Patent

active

039536947

ABSTRACT:
An arc-extinguishing device having a pair of separable electrodes to draw an arc therebetween. A permanent magnet is associated with each electrode and the magnetic fields produced by the magnets are additive to rapidly transfer the arc to diverging parts of the electrodes thereby causing the arc to be lengthened and subsequently quenched. Advantageously the electrodes comprise a pair of offset contact rings.

REFERENCES:
patent: 2611059 (1952-09-01), Immel et al.
patent: 2896043 (1959-07-01), Andrews
patent: 3384772 (1968-05-01), Rabinowitz

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