... zero compulsorily under emergency (Cutoff double circuit power synchronously)With visible indication of on/off position and padlocking function, ... .High reliability, service life reaching 8000 times.Being designed with electromechanical integration, the switch transfers accurately,flexibly and smoothly ... ,Disconnectors, Switch-disconnectors and Fuse-combination units. ATS with 4p from 20A to 3200A