ZW7-40.5 series of outdoor vacuum circuit breakers are three-phase, A.C 50Hz outdoor high voltage distribution equipment with 40.5kv rated voltage, which can be used to open or close loading current, over-loading current and short-circuit current,it is widely used in rural electrical network and comply with GB1984-2003 standard.
The overall structure of this product adopt porcelain insulator support type, the vacuum interrupter is installed inside the upper insulator, the lower insulator is used for support bottle, three phases are amounted on the same mechanism box, the moving end of vacuum interrupter is connected with operating mechanism through shaft and insulation lever. The operation is easy and convenient.