5 hp 240 V at AC 50-60 Hz for 1 phase conforming to NEC 240.6 10 hp 240 V at AC 50-60 Hz for 3 phase conforming to NEC 430.52 7.5 hp 480 V at AC 50-60 Hz for 1 phase conforming to NEC 240.6 20 hp 480 V at AC 50-60 Hz for 3 phase conforming to NEC 430.52 10 hp 600 V at AC 50-60 Hz for 1 phase conforming to NEC 240.6 30 hp 600 V at AC 50-60 Hz for 3 phase conforming to NEC 430.52 5 hp 250 V at DC 15 hp 600 V at DC