Vacuum switches for high voltages

Vacuum switches are based on the formation of arcs in vacuum and the subsequent insulating effect of a vacuum gap after the arc has been extinguished. So far, they have been limited to medium-voltage applications. Gas current breakers containing the climate-damaging gas sulphur hexafluoride and other fluorine-containing components are currently used for current interruption in high-voltage systems. Replacement with vacuum current breakers is one solution option. This requires innovative switching devices, for example with coupling of several vacuum sections in one system.