Eaton CUTDT363UGK Heavy Duty Double-Throw Non-Fused Safety Switch, 100 Amp, NEMA 1, 3 Pole, 3 Wire, 600 Vac, 250 Vdc are designed for commercial and industrial applications. The wiring configuration from the factory allows a single load to be supplied by a normal or alternate source; however, where necessary, the wiring can be field modified to allow two loads to be alternately supplied by a single power source. Heavy-duty double-throw safety switches are designed to accommodate a wide range of accessories that can be factory or field installed.