Static Transfer Switch(STS) is a static electric device, designed to automatically transfer charge to a standby power source connected to its input when there were an earlier disruption and to reverse without interrupting the server room charge. Static Transfer Switch(STS) It is completely static, a

STS(Static Transfer Switch), is an automatic static switching equipment designed to transfer critical loads between two independent AC power sources without interruption or with a transfer time of less than a cycle (20ms).