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DC 500.33M - industrial inverter

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Mechanized welding kit

    DC 500.33M - the modern industrial inverter device with the maximum amperage of 500A. It is used for:
- MECHANIZED - welding with PM-4 welding mechanisms in MIG/MAG mode
- MANUAL ARC - welding with covered electrode (MMA mode)
    PM-4.33M Feeding mechanism - is intended to feed solid steel wire, aluminum wire and flux-cored wire by diameter from 0.6 to 2.4 mm.
    The cooling unit provides the liquid cooling of welding blowpipe.
Welding process is controlled with control board of feeding mechanism. There are “quick memory” buttons which allow choosing the one out of five saved welding presets. The kit is equipped with the cooling unit controller. If the welding blowpipe is not cooled, the operation stops.

    MIG/MAG mode

    DC500.33M device provides accurate control of welding modes (regardless of the power cable length and power line voltage drops), high quality of welding joints by all welding wires, minimal splashing, smooth arc initiation and quenching and its constant operation in welding process.

  • Welding with solid and flux-cored gas-shielding wire.
  • Remote control of welding voltage (MIG/MAG) and welding current (MMA).
  • “Hot start” time varies from 0 to 2 seconds. It is used for arc initiation improvement and high quality weld starting.
  • Welding current and voltage digital display.

    MMA mode

    DC500.33M provides the covered-electrode welding.

  • Operating in safe mode the device has idle run voltage limit – 12V.
  • “Hot-start” system provides fast arc initiation.
  • “Anti-stick” function protects the electrode from sticking.
  • Arc forcing control function. Decrease of forcing level reduces metal splashing when increasing of forcing level reduces chances of electrode sticking increasing a joint penetration and arc pressure.
  • Changing of volt-ampere characteristic slope from 0.4V/A to 1.4V/A. Different forward transfer admittance is chosen in accordance with electrode cover type, it allows to achieve high-quality welding joint by using electrodes with main as well as cellulose type of coverage.

DC 500.33M Specification ( MIG/MAG , MMA)

Power supply, V380 ,+10% -10%
Maximum power consumption, kVA24
MIG/MAG voltage (smooth controlled with 0.1 discreteness), V16,5 - 39
Welding amperage MIG/MAG, А50 - 500
Welding amperage MМА (1A control discreteness), А 50 - 400
Duty cycle, % 100%
Operating temperature range, ºСfrom -40 to +40
Weight, kg50
Overall dimensions, mm610x270x535

    The power supply is designed to block automatically if overheated or departed from normal voltage. Power supply parameters don’t depend on voltage fluctuation.

    PM-4.33M Feeding mechanism is intended to feed solid steel wire, aluminum wire and flux-cored wire by length from 0.6 to 2.4 mm.


  • Digital setting of all welding parameters by feeding mechanism.
  • Digital indication of wire feed speed, welding current and voltage.
  • Smooth control of wire feed speed and arc voltage.
  • Setting of vent time in the beginning of welding process and blowing gas after its ending.
  • Smooth arc initiation due to deceleration of the wire in the beginning of welding process.
  • Smooth arc suppression due to deceleration of the wire in the end of welding process.
  • “Quick memory” for five welding modes.
  • Four-roll wire feeder (roller profile depends on the diameter and type of welding wire)
  • Gearing of feed roller and pressure roller.
  • Adjustable clamping force.
  • It is possible to operate at the maximum distance of 50 m from the welding power supply.
  • Shielding gas shut off device.
  • “Gas test” and “Wire test” buttons on the front panel.
  • Wire feed speed remote control.
  • Wire feed from standard 5kg and 15kg spools.
  • The ability to operate in continuous 2-stroke and 4-stroke mode and in plug weld mode.

PM-4.33M specification

Power supply, V~36
Maximum power consumption, kVA0,15
Wire feed speed, m/min1 - 17
Wire diameter, mm

0.6 - 2.0
1.2 - 2.4
1.6 - 2.4
Operating temperature range, ºСfrom -40 to +40
Weight, kg14
Overall dimensions, mm685х250х430
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