• MasterMIG 501W is a semi-automatic GMA (MIG/MAG) welding machine with separate and 4 drive rolls wire feeder which provides to work easily in areas distant from the power supply.
  • Suitable for high quality welding of constructional low-carbon steels and stainless steels.
  • Excellent arc caracteristics, sound weld beads and low spatter with 100% CO2 gas shielding.
  • 30 steps (3×10) welding voltage so as to adjust welding parameters conveniently.
  • Adjustable wire feed speed.
  • 2/4 trigger mode selection option.
  • Wire feed slow run (soft-arc) control function enables easier arc generation.
  • Equipped with thermal overload protection circuit.
  • Burnback time adjustment, gas flow (gas purge) control, cold wire inching functions.
  • Equipped with two digital meters to indicate welding current and welding voltage.
  • Water cooled (optionally gas cooled).
  • Easy to use, highly reliable.
  • IP21S protection class.
  • Designed according to IEC 60974-1.
  • 2 years warranty (welding torch and cables excepted).

Technical Properties

Power Supply
Input Voltage : 380 V
3~Ph
50/60 Hz
Power Input @ Rated Output : 28,3 kVA (60%)
Input Current (Max) : 43 A (60%)
33 A (100%)
Power Factor
: 0,94 (60%)
Efficiency : 73,3%
Rated Output Current,
Voltage and Duty Cycle
: 500 A; 39,0 V (60%)
387 A; 33,4 V (100%)
Open Circuit Voltage Range : 20 – 51 V
Current Range : 110 – 500 A
Voltage Range : 19,5 – 39 A
Number of Steps (Voltage) : 30 (3×10)
Protection Class : IP21S
Insulation Class : F+H
Radio Frequence Level : W
Weight (Without Wire Feeder) : 220 kg (cooling unit emty)
225 kg (cooling unit full)
Dimensions (W x H x D) : 620 x 900 x 930 mm
Wire Feeder
Wire Feed Speed Range (V)
: 1 – 24 m/min
Soft-arc Start Speed Range : 10-100% V
Wire Size and Type
: 0.8 – 1.0 – 1.2 mm (solid wire)
1.2 – 1.6 mm (flux-cored wire)
Input Voltage and Power Input : 42 V; 90 W
Max Input Current : 4 A
Protection Class : IP21
Weight (Without Torch and Cables) : 19 kg
Dimensions (W x H x D) : 290 x 440 x 675 mm