Current connection and/or cut-off device comprising permanent contacts with reduced wear

A device for making and/or breaking a current comprising a pair of permanent contacts (3, 4), at least one of the contacts (3, 4) of the pair being movable, the device being characterized in that at least one permanent contact (3, 4) of the pair comprises a main portion (3.1, 4.1) having a free end and an end protection portion (3.2, 4.2) secured to the free end of the main portion (3.1, 4.1), the end protection portion (3.2, 4.2) being designed to be in mechanical and electrical contact with the other permanent contact (4, 3) of the pair of permanent contacts only during an operation for opening or closing the pair of permanent contacts, said end protection portion (3.2, 4.2) being made of a single transition metal, said transition metal having a melting temperature that is strictly higher than that of the main portion (3.1, 4.1) to which it is secured, or of an oxide of such a metal, or of a carbide of such a metal, or even of zinc oxide.