GE Critical Power is a supplier of static transfer switches to a wide range of industries. The GE Zenith STS-3 Series static transfer switch supplies critical loads with a choice between two available sources of electrical power. By continually monitoring power quality, the STS-3 switch automatically transfers to an alternate source without interruption of power to even your most sensitive critical loads. With a sense and transfer time of less than 4ms, and the industry’s best communication package, the STS-3 represents the highest performance power switching solution available.