MasterMIG 420W
Features and Advantages

- MasterMIG 420W 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.
- Easy to use, highly reliable.
- IP21S protection class.
- Designed according to IEC 60974-1.
- 2 years warranty (welding torch and cables excepted).


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Technical Properties
Power Supply
Input Voltage : 380 V
3~Ph
50/60 HzPower Input @ Rated Output : 21 kVA (30%) Input Current (Max) : 32 A (30%)
14 A (100%)Power Factor
: 0,96 (30%) Efficiency : 73% Rated Output Current,
Voltage and Duty Cycle: 420 A; 35,0 V (30%)
255 A; 26,8 V (100%)Open Circuit Voltage Range : 18,1 – 46 V Current Range : 60 – 420 A Voltage Range : 17 – 35 A Number of Steps (voltage) : 30 (3×10) Protection Class : IP21S Insulation Class : H Fuse Size and Type : 40 A (retarded) Weight (Without Wire Feeder) : 154 kg (cooling unit emty)
160 kg (cooling unit full)Dimensions (W x H x D) : 600 x 810 x 1030 mm Compliance : EN 60974-1 ; CE 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 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