Contact device for an electric switch

Details Contact device for an electric switch Contact device for an electric switch

1977-04-21

1978-11-28

Hall, George T.

Electricity: circuit makers and breakers

Electric switch details

Contact

200258, H01H 142

Patent

active

041277570

ABSTRACT:
A contact device for an electric switch comprising at least two interconnectable contacts and at least two contact knives movable relative thereto and adapted, in the closed position of the switch, to clamp between themselves at least one of the contacts. The contact knives are enclosed in pairs by iron elements or similar which, when a short-circuit current passes through the contact knives, act as a magnets increasing the contact force.

REFERENCES:
patent: 4016377 (1977-04-01), Iwaski
patent: 4025747 (1977-05-01), Bharteey et al.

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