Static transfer switches (STS) supply power to a range of equipment from two independent and redundant power sources.Even under extreme conditions, such as 180 degrees out of phase, the STS will have detection and automatic transfer times that are up to 10 times faster than many other switches.Complete range of 1-pole, 2-pole, 3-pole and 4-pole Static Transfer Switches (STS) in rack-mount and floor standing formats to provide ultra fast switching between two power sources, offering virtually uninterrupted power to sensitive electronic equipment in industries & data centres.