1.Pole Mounted Outdoor VCB, Capacity 630A,12kV,16kA with CT, PT 2.Full Automatic Re-closer Unit, ... outdoor Vacuum circuit breaker is a kind of outdoor H.V switch equipment with 50Hz three-phase alternating current and rated voltage 12kV. It ... time withstand current12.5,16,208Breaking times of rated short-circuit switch-off currentTimes309Rated duration of short-circuitS410Rated operating orderO-0 ...