Vacuum switch has pair of windmill wheel shaped electrodes in vacuum tube with spiral slots extending from central region to peripheral region to separate windmill wheel shaped sections

摘要

The vacuum switch has a pair of windmill wheel shaped electrodes (1) mounted in a vacuum tube and each has a number of spiral slots (2) extending from a central region to a peripheral region that separate windmill wheel shaped sections (4). The electrodes have contact areas (3) separated by the slots and that are thicker than the windmill wheel shaped sections. The contact areas are brought into contact when the electrode pair is closed.