Short-circuiting device

A device for short-circuiting a first electrical line (1) with a second electrical line (2), it being possible for the first electrical line (1) and the second electrical line (2) to be short-circuited by at least one mechanical switching device (SM), characterized by the following features:

• at least one first electronic switching device (SE1) is arranged in parallel with the mechanical switching device (SM) and at least one second electronic switching device (SE2) is arranged reverse-connected in parallel with the first electronic switching device (SE1), in which case
• a voltage difference that occurs between the first electrical line (1) and the second electrical line (2) can be bridged by at least one of the electronic switching devices (SE1, SE2), and
• the first electronic switching device (SE1) switches if the potential (U2) of the second electrical line (2) is greater than the potential (U1) of the first electrical line (1) by a predeterminable difference value, and
• the second electronic switching device (SE2) switches if the potential (U1) of the first electrical line (1) is greater than the potential (U2) of the second electrical line (2) by a predeterminable difference value.