Various embodiments may include a voltage switch having two terminals linked by an operating current path comprising a mechanical switch, and having means of generating a counter voltage to the voltage in the operating path. In some embodiments, there are: two terminals linked by an operating current path comprising a mechanical switch; a transformer having a primary side connected in series with the mechanical switch in the operating current path; a voltage source connected to a secondary side of the transformer; and a switch connected in series with the voltage source.