Patent ID: 8426754
Filing Date: 2013-04-23
Classification: H01H

Abstract:
1. An electrical contact comprising: a contact layer for making contact with an opposing electrical contact; and a high conductive layer in an opposite side of the contact layer, wherein the contact layer and the high conductive layer are integrally connected to each other, and the contact layer and the high conductive layer have a disc form, wherein the contact layer contains Cr, Cu and Te, and the high conductive layer contains copper as a main component, wherein the high conductive layer is provided with a means for suppressing warping of the contact layer at the time of turning on the contacts, and wherein the means for suppressing warping includes one or more of: at least one concentric groove, formed in the high conductive layer, with respect to the contact layer; at least one side face groove formed in the side face of the high conductive layer; an intermediate layer, sandwiched between the high conductive layer and the contact layer, having a composition intermediate between that of the contact layer and that of the high conductive layer; and a taper, formed in a rear face of the high conductive layer opposite to the contact layer, inclined towards the periphery of the high conductive layer such that the periphery is thinner than an inner region thereof.