A rubber and metal composite electric contact and a preparation process therefor. The rubber and metal composite electric contact is a circular layered complex which is formed by tightly combining a metal sheet layer having a plurality of through holes and a rubber layer by means of thermal vulcanization molding and which has a thickness of 0.1 to 5 mm and a diameter of 1 to 15 mm. There is no isolation layer between the rubber layer and the metal layer of the electric contact, so no rubber overflows the outer surface of the metal layer. In the rubber and metal composite electric contact, the rubber and metal are combined firmly and the overall strength of the electric contact is adjustable; the electric contact also has good dust resistance; and the electric contact thus has stable and reliable electrical conductivity.

A contact for a vacuum interrupter of a low, medium or high-voltage switchgear includes a contact rod composed of a first electrically conductive material and extending along a longitudinal axis of the contact, and a contact piece composed of a second electrically conductive material and fastened to an end face of the contact rod. The contact rod and the contact piece are materially bonded to one another at a connecting face. At least one of the contact rod or the contact piece has a wall which delimits the connecting face, rises perpendicularly to the longitudinal axis and is disposed such that the contact piece and the contact rod are also force-lockingly connected to one another by a force acting transversely to the longitudinal axis between the contact piece and the contact rod. A production method for such a contact is also provided.

Electrical switch contact sets are disclosed. A disclosed example apparatus includes a movable platform having first and second contacts, where the first and second contacts electrically coupled via the movable platform, and a stationary portion having third and fourth contacts, where the movable platform is movable to bring the first and second contacts in contact with the third and fourth contacts, respectively, to simultaneously close a current path of an electrical circuit associated with the first, second, third and fourth contacts.

Electrical switch contact sets are disclosed. A disclosed example apparatus includes a movable platform having first and second contacts, where the first and second contacts electrically coupled via the movable platform, and a stationary portion having third and fourth contacts, where the movable platform is movable to bring the first and second contacts in contact with the third and fourth contacts, respectively, to simultaneously close a current path of an electrical circuit associated with the first, second, third and fourth contacts.

Provided is a method of manufacturing a contact material, including the steps of: forming a Ni alloy film having a film thickness of 40 nm or more and 110 nm or less on a surface of WC powder having an average particle diameter of 2 μm or more and 10 μm or less by an electroless Ni plating method; performing heat treatment for degassing at a temperature of 500° C. or more and 860° C. or less; crushing Ni alloy-coated WC powder after the heat treatment; mixing the crushed Ni alloy-coated WC powder and Cu powder having an average particle diameter of 1 μm or more and 100 μm or less; and compressing the resultant mixture, followed by sintering the mixture at a temperature of more than 1,083° C. and less than 1,455° C.

Systems, devices, and methods disclosed herein can generally include electrical contacts for high voltage, high current, and/or fast acting electromechanical switches and methods for manufacturing the same. The electrical contacts can be optimized for high voltage blocking capabilities with minimal gap spacing in the open state and low electrical resistance when in contact in the closed state. Electrical contacts can have a geometry to produce a low peak electric field between the contacts when in the open state, have a high contact surface area when in the closed state, and a low mass. The geometry of the contacts can be based on geometries traditionally utilized for uniform field electrodes.

Systems, devices, and methods disclosed herein can generally include electrical contacts for high voltage, high current, and/or fast acting electromechanical switches and methods for manufacturing the same. The electrical contacts can be optimized for high voltage blocking capabilities with minimal gap spacing in the open state and low electrical resistance when in contact in the closed state. Electrical contacts can have a geometry to produce a low peak electric field between the contacts when in the open state, have a high contact surface area when in the closed state, and a low mass. The geometry of the contacts can be based on geometries traditionally utilized for uniform field electrodes.

The present disclosure aims to provide an electrical contact to which a low boiling point metal is added, the electrical contact being able secure both mechanical strength and conductivity at the same time. The electrical contact according to the present disclosure includes a base material made of Cu, particles of a high melting point substance dispersed in the base material, the particles being made of at least one of a high melting point metal or a carbide of the high melting point metal, and Te and Ti dispersed in the base material, wherein, the Te of 3.5 to 14.5 mass % is added where the total is 100 mass %, and Ti/Te is 0.12 to 0.38.

Electrical switch contact sets are disclosed. A disclosed example apparatus includes a movable platform having first and second contacts, where the first and second contacts electrically coupled via the movable platform, and a stationary portion having third and fourth contacts, where the movable platform is movable to bring the first and second contacts in contact with the third and fourth contacts, respectively, to simultaneously close a current path of an electrical circuit associated with the first, second, third and fourth contacts.

Electrical switch contact sets are disclosed. A disclosed example apparatus includes a movable platform having first and second contacts, where the first and second contacts electrically coupled via the movable platform, and a stationary portion having third and fourth contacts, where the movable platform is movable to bring the first and second contacts in contact with the third and fourth contacts, respectively, to simultaneously close a current path of an electrical circuit associated with the first, second, third and fourth contacts.