Miller SRH-500 Trafo Welding Electric Specifications Rated Output : 500 Amps at 40 VDC, 35% Duty Cycle Welding : 45– 250 Amperage Range 60– 500 Max : 75 OCV Amps Input at Rated Output, Three-Phase, 50/ 60 Hz 220 V : 103 380 V : 60 440 V : 51 Dimensions : H: 30-1/ 4 in ( 768 mm) W: 22-1/ 2 in ( 572 mm) D: 35-3/ 4 in ( 908 mm) Net : 755 lb Weight ( 342 kg)