Portable DC Welders: The Ironhorse 300S 700V DC View printer-friendly version What is unique about The Ironhorse, 300-Amp Stick/TIG welder, is its ability to run off the DC power of the third rail or overhead catenary systems between 500 and 800 Volts DC. The 80lb (36.3Kg) Ironhorse is ideally suited for tunnels where AC primary power is not readily available, and provides subway and commuter systems with alternatives to using generators, thermite, or to powering down. In addition, The Ironhorse may provide a healthier and safer alternative to those options currently available. The Ironhorse also features a "safety yellow" fiberglass case with extra thick drag skids. These are just two of the features specifically recognized by New York City Transit Authority.For more information about the features of our portable DC welder, The Ironhorse 300S, please click below: Go to The Ironhorse DC Welder Product Features page Product Specifications: Primary Input* Rated Welding Current (AMPS) 60% Duty Cycle Welding Amp Range Open Circuit Voltage Imput Amperes at Rated Load Output DC KW Eff. Dimensions Weight 500V 600V 700V Net Ship DC 500 to 800V 400A @ 29% 300A @ 60% 250A @ 100% Range 1 10A - 180A Range 2 30A - 400A 80 max 28 23 20 12.05  79.60%  Height: 17.9" (45.5 cm) Width: 10.5" (26.7 cm) Depth: 19.5" (49.5 cm) 75 lbs. (34.0 kg.) 80 lbs. (36.3 kg) Please click here to request more information.