Abstract: A switching device includes first and second fixed switching contacts and a movable switching contact. The first and second fixed switching contacts are connected to first and second device terminals and are arranged next to one another in such a way that their contact surfaces point in the same direction. The movable switching contact can be moved between a closed position and an open position. The first and second fixed switching contacts and the movable switching contact form an arrangement of electrical conductors which are arranged substantially parallel to one another. At least one of the fixed switching contacts has an elongated contact surface which extends in the direction of current flow. Electrodynamic forces act on the fixed conductors and the movable conductor, which are directed in such a way that the conductors attract each other, i.e., the switching contacts tend to close.
Abstract: The invention relates to a voltage limiting device having a switching device 5 which has a movable switching contact 16 which can be moved between a closed position and an open position, an electrical conductor 10 electrically connecting a first cable terminal 11 to the switching device and an electrical conductor 12 electrically connecting a second cable terminal 13 to the switching device. The voltage limiting device according to the invention is characterised by a special arrangement and design of a conductor portion of one of the two electrical conductors 10, 12. A conductor portion 10B, 12B of an electrical conductor 10, 12 is arranged or designed in such a way that this conductor portion, together with the movable switching contact 16 of the switching device 5, forms an arrangement of conductors through which currents flow in opposite directions during operation of the switching device.
Abstract: A fastening device for a conductor rail and a contact line system having fastening devices to which the conductor rail is fastened. The fastening device is in the form of a plastic component. The plastic component has sliding jaws which enclose the conductor rail laterally and can be fixed in a position in which they enclose the fastening piece of the conductor rail from both sides. The fastening device can be produced inexpensively by methods known from plastic processing, for example injection molding methods. Further advantages arise from the fact that plastic material is an electrical insulator. In addition, the plastic material allows the conductor rail to be adjusted in a sliding manner in the fastening device before it is fastened.