The electrical switch includes a first and a second fixed contact, and a movable knife contact including at least one longitudinal pair of blades being flexibly connected to each other, wherein the blades form, in a switching event, contact with contact portions of the first and/or the second fixed contact. Opposite surfaces of the contact portions of the first and the second fixed contact include a roughened area and the inner surface of each blade includes a protruded area or opposite surfaces of the contact portions of the first and the second fixed contact include a protruded area and the inner surface of each blade includes a roughened area.

A switch may include a movable board and a pole board having an inner surface on which a fixed contact point is exposed, the inner surface facing the movable board. A movable contact point may be supported by the movable board and may include a plurality of contact pieces making resilient contact with the inner surface of the pole board. The switch may also include an output terminal corresponding to the fixed contact point. The movable contact point and the fixed contact point may come in contact with each other when a position of the movable contact point is changed via a displacement of the movable board. The fixed contact point and the output terminal may be connected via a board having a disconnection detection circuit. The board may be enclosed in an insulating seal material.

A switch may include a movable board and a pole board having an inner surface on which a fixed contact point is exposed, the inner surface facing the movable board. A movable contact point may be supported by the movable board and may include a plurality of contact pieces making resilient contact with the inner surface of the pole board. The switch may also include an output terminal corresponding to the fixed contact point. The movable contact point and the fixed contact point may come in contact with each other when a position of the movable contact point is changed via a displacement of the movable board. The fixed contact point and the output terminal may be connected via a board having a disconnection detection circuit. The board may be enclosed in an insulating seal material.

A disconnect terminal includes an enclosure, a first ladder rail, a second ladder rail, a switching device, and an actuation device. The switching device can be switched by the actuation device from a connecting position, in which the first ladder rail and the second ladder rail are electrically connected by the switching device into a disconnecting position in which the electrical connection of the first ladder rail and the second ladder rail is separated or disconnected, and back. A visible portion of the actuation device aligns with a surface of a portion of an upper side of the enclosure or with a part connected with the enclosure. In the disconnecting position, the visible portion of the actuation device protrudes from a surface of a portion of an upper side of the enclosure or of a part connected with the enclosure in a clearly visible manner. An assembly is provided of at least two aligned disconnect terminals.

A switching device for low or medium voltage electric power distribution networks, the switching device including one or more electric poles and, for each electric pole: an insulating housing defining an internal volume of said electric pole; a first pole terminal and a second pole terminal electrically connectable with a corresponding electric phase conductor of an electric source and with a corresponding electric phase conductor of an electric load, respectively; a movable contact and a fixed contact, which are coupleable/decoupleable one to another, the fixed contact being electric connected with the first pole terminal, the movable contact being electrically connected with the second pole terminal; a stack of semiconductor devices adapted to switch in conduction state or in an interdiction state depending on the voltage provided thereto.

A switching device for low or medium voltage electric power distribution networks, the switching device including one or more electric poles and, for each electric pole: an insulating housing defining an internal volume of said electric pole; a first pole terminal and a second pole terminal electrically connectable with a corresponding electric phase conductor of an electric source and with a corresponding electric phase conductor of an electric load, respectively; a movable contact and a fixed contact, which are coupleable/decoupleable one to another, the fixed contact being electric connected with the first pole terminal, the movable contact being electrically connected with the second pole terminal; a stack of semiconductor devices adapted to switch in conduction state or in an interdiction state depending on the voltage provided thereto.

A fuse device comprising a housing, at least two connection lugs, a connecting element between the connection lugs, and an actuator. The actuator moves the connecting element from a closed position, in which it connects the connection lugs, to an open position, in which it is disconnected from at least one of the connection tabs. A particularly well-conducting connection between the connection lugs and the connecting element, which can nevertheless be easily disconnected by the actuator, is achieved by the connecting element being interference-fitted between the connection lugs.

A switch device may include a rod movable in association with an operation of a brake pedal, a main body case in which one end side of the rod is disposed, a movable board disposed in the main body case, and a connecting mechanism configured to connect the rod and the movable board. The movable board may be displaceable via the movement of the rod such that a movable contact point of the movable board is in contact with or separate from a fixed contact point. The connecting mechanism may include a protruding portion radially protruding from the rod, and a wall portion provided in the movable board. After pushing the rod into the main body case by a predetermined length, a tooth portion disposed on the protruding portion may mesh with a tooth portion disposed on the wall portion connecting the rod and the movable board.

A switching device for low or medium voltage electric power distribution networks, the switching device including one or more electric poles and, for each electric pole: an insulating housing defining an internal volume of said electric pole; a first pole terminal and a second pole terminal electrically connectable with a corresponding electric phase conductor of an electric source and with a corresponding electric phase conductor of an electric load, respectively; a movable contact and a fixed contact, which are coupleable/decoupleable one to another, the fixed contact being electric connected with the first pole terminal, the movable contact being electrically connected with the second pole terminal; a stack of semiconductor devices adapted to switch in conduction state or in an interdiction state depending on the voltage provided thereto.

A switching device for low or medium voltage electric power distribution networks, the switching device including one or more electric poles and, for each electric pole: an insulating housing defining an internal volume of said electric pole; a first pole terminal and a second pole terminal electrically connectable with a corresponding electric phase conductor of an electric source and with a corresponding electric phase conductor of an electric load, respectively; a movable contact and a fixed contact, which are coupleable/decoupleable one to another, the fixed contact being electric connected with the first pole terminal, the movable contact being electrically connected with the second pole terminal; a stack of semiconductor devices adapted to switch in conduction state or in an interdiction state depending on the voltage provided thereto.