Vacuum switch or circuit breaker for low or medium voltages

摘要

The switch is housed in an elongated cartridge including a cylindrical envelope (1) and is under vacuum. A static disc shaped structure having an arc contact (4) on it is attached internally to one end of the envelope. The moving disc structure has an arc contact (5) on it and is separated from the static disc structure by a distance i. There is a conductive material inner envelope lining static screen (10) localised around the area of the static and moving switch contacts (4,5) in a predetermined position according to the position of current lines (6,7). The switching arc and current flow is axial through the switching elements.