Electrical switch for large currents

Details Electrical switch for large currents Electrical switch for large currents

1980-05-21

1983-02-01

Macon, Robert S.

Electricity: circuit makers and breakers

Liquid contact

Time delay

200148A, 200146R, 200148C, H01N 3318

Patent

active

043717659

ABSTRACT:
An electrical switch for large currents is disclosed in which an electric arc generated during separation of contact members is exposed to blow-out by a magnetic field generated by current flow in a looped-region of one of the contact members. The switch includes at least two rotationally symmetric contact pieces, at least one of which has a plurality of contact elements arranged in an annular configuration in the circumferential direction. The contact elements include a looped-region which generates the magnetic field to which the electric arc is exposed. The contact elements may consist of a plurality of contact fingers accommodated by a contact piece, or may consist of a plurality of contact bars integrally formed with a contact piece. The contact elements, which extend substantially in the make/break direction of the switch, may be spring loaded or may be supported in a spring-loaded fashion.

REFERENCES:
patent: 3906180 (1975-09-01), Glarner
patent: 4046978 (1977-09-01), Badon
patent: 4221942 (1980-09-01), Hertz et al.

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