Vacuum switch having fixed rail terminals on both sides

摘要

The vacuum switch is compact, requires little effort, and provides a reliable current path having a high current-carrying capacity between the terminals of the vacuum switch, particularly at high switch-on speeds. The vacuum switch has a vacuum chamber, in which a vacuum is present and in which a switching contact is arranged. The switching contact includes a fixed contact piece firmly connected to the vacuum chamber and in electrical contact with a fixed contact terminal, and a moving contact piece movably guided relative to the fixed contact piece. The moving contact piece is at a distance to the fixed contact piece in a disconnect position and contacts the latter in a contact position. A drive unit produces a drive movement. A switching mechanism is connected to the drive unit and the moving contact piece and includes a conductor section that is electrically conducting up to the moving contact piece. A connector connects a moving contact terminal electrically to the moving contact piece in the contact position. The connector has a clamping contact, which has an insertion clamping contact piece connected to the conductor section of the switching mechanism and a mating clamping contact piece firmly connected to the vacuum chamber and electrically connected to the moving contact terminal. The insertion clamping contact piece and the mating clamping contact piece are arranged relative to each other such that the insertion clamping contact piece is clamped with the mating clamping contact piece in an electrically conducting manner as a result of the drive movement.

主权项

1. A vacuum switch, comprising:
a switching contact disposed in a vacuum chamber subject to a vacuum, said switching contact including:
a stationary contact piece fixedly connected to said vacuum chamber and making electrical contact with a stationary contact connecting terminal; anda moving contact piece movably guided relative to said stationary contact piece between a disconnected position at a spacing distance from said stationary contact piece and a contact position in position in contact with said stationary contact piece; a drive unit for production of a drive movement; a switching mechanism connected to said drive unit and to said moving contact piece, said switching mechanism having an electrically conductive conductor section extending to said moving contact piece; and a connector device disposed to electrically connect a moving contact connecting terminal to said moving contact piece in the contact position, said connector device including a terminal contact with an insertion clamping contact piece, which is connected to said conductor section of said switching mechanism, and a mating clamping contact piece, which is fixedly connected to said vacuum chamber, and is electrically connected to the moving contact connecting terminal; said insertion clamping contact piece and said mating clamping contact piece being arranged with respect to one another to cause said insertion clamping contact piece to be electrically conductively clamped to said mating clamping contact piece as a consequence of the drive movement.