Hero MMA / TIG Welding Machine, 315 Amperes, Dual Voltage 220V / 380V, 5mm Electrode H-MMA-315

Hero MMA / TIG Welding Machine 315A H-MMA-315

The Hero H-MMA-315 MMA / TIG Welding Machine 315A is a dual-voltage stick welder that runs on single-phase 220V or three-phase 380V supplies. On 380V it delivers 20-315A in MMA mode and 15-315A in Lift TIG mode, and on 220V it delivers 20-230A MMA and 15-230A TIG. An electrode diameter selector displays the recommended current for 1.6 to 5.0mm electrodes, while adjustable hot start, arc force and a pulse function help tune the arc. With a 35% duty cycle at 40°C, a 21V VRD voltage, IP21S protection and a 10.2kg body, it suits fabrication shops, construction sites and maintenance teams.

Hero MMA / TIG Welding Machine 315A Features

• Dual Voltage 220V and 380V
  Works on 1-phase 220V ±15% with an MMA range of 20-230A, or on 3-phase 380V ±15% for the full 20-315A, at 50/60Hz.

• Electrode Diameter Selection
  Select the electrode diameter and the display shows the recommended current: 1.6mm 37A, 2.5mm 65A, 3.2mm 112A, 4.0mm 175A and 5.0mm 245A.

• Adjustable Hot Start and Arc Force
  Hot start and arc force are each adjustable from OFF to 50A to improve arc starting and keep the arc stable.

• Lift TIG Function
  Lift TIG welding with a current range of 15-315A on 380V, adding TIG capability alongside stick welding.

• Pulse Function
  Pulse on/off selection with adjustable peak on time of 5-95%, pulse frequency of 1-200Hz and base current.

• VRD Safety and 35% Duty Cycle
  A VRD voltage of 21V reduces the open-circuit voltage for safer electrode changes, with a 35% duty cycle at 40°C.

• Digital Display and EMC Board
  LED digital display with a single adjustment knob, EMC board, fan cooling, IP21S protection and class F insulation.

Application Fields

• Structural Steel Fabrication
  Stick welding of beams, columns, plates and heavy steel structures with electrodes up to 5.0mm.

• Construction Sites
  Running on 220V or 380V site power for structural connections and steel frameworks.

• Industrial Maintenance
  Repair welding of machinery, frames and plant equipment in factories and facilities.

• Heavy Equipment Repair
  Welding buckets, chassis and wear parts of construction and mining equipment.

• Tank and Pipe Fabrication
  MMA and Lift TIG welding of thicker steel for tanks, supports and pipe structures.