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Buddy™Arc 400i/400i XC-Compact and Powerful Inverter MMA Welder


  • Robust and Powerful
  • The Buddy™ Arc 400i and 400i XC are heavy duty, fan cooled, IGBT based inverter controlled power sources meant for MMA / TIG (scratch-start) welding.

  • MMA Welding
  • A wide current range and powerful welding performance make the Buddy™ Arc machines suitable for a wide range of applications and electrode types such as: The BuddyTM Arc 400i XC model has controlled welding dynamics that provides excellent weld properties for welding pipe root passes.

  • TIG Welding
  • The Buddy™ Arc machines are capable of performing TIG welding with precise current control. All you need is an optional TIG-torch with a gas valve, a gas regulator and a cylinder of gas. You can weld mild steel or stainless steel material with or without filler material.


  • Inverter controlled - more efficient power usage
  • Light weight - improved mobility
  • Easy-to-use control panel - quick setup
  • Adjustable hot start - easy to strike the electrode, helps you to avoid starting problems.
  • Adjustable arc force - sets the intensity of the arc for improved weld quality.


  • General fabrication
  • Railways
  • Shipbuilding
  • Civil construction
  • Pipe workshops

Technical Data

Buddy™ Arc 400i/ Buddy™ Arc 400i XC
Mains voltage, V/Ph Hz 400V ± 15%, 3ph, 50Hz
Effective input current, A 21.4A
Fuse (slow), A 3
Mains cable, Ø mm² 4C x 4
Permitted load at (MMA)
60% duty cycle, A/V 400 / 36
100% duty cycle, A/V 310 / 32.4
Permitted load at (TIG)
60% duty cycle, A/V 400 / 26
100% duty cycle, A/V 310 / 22.4
Power factor at maximum current 0.93
Efficiency at maximum current, % 8
Setting range (TIG/MMA), A 2
0 -400
Open circuit voltage (OCV), V 6
8 (400i)
8 (400i XC)
Reduced OCV (VRD), V < 35
Dimensions lxwxh, mm 540 x 280 x 510
Weight, kg 2
9 (400i)
1 (400i XC )
Operating temperature -10 till 40°C
Application class S
Standards IEC 60974-1
IEC 60974-10

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