400 Amp Asco Manual Transfer Switch | 240V, 60Hz, 1 Phase, 3R, Series 386 400 Amp Asco Manual Transfer Switch | 240V, 60Hz, 1 Phase, 3R, Series 386 Rating: 400 Amps 240 Volt 60Hz 1 Phase Cat. No.: E00386A20400F1XF Enclosure Type 12, 3R