STS
Static transfer switches in single phase and 3 phase outputs suitable for use with two synchronised or non synchronised input power sources, the transfer switch provides a single output to the critical load. This series of static transfer switches can operate with the default source selected as A or B to feed the critical load, on failure of the selected source the load will be transferred in synchronism to the alternative source. Sizes are available from 10kW to 1000kW with three switching elements as standard for the three phase system, a manual wrap around bypass switch is also provided. A power flow status mimic and alarm indicating mimic with separate digital or analogue metering is fitted as a standard feature.