The ESAB OrigoMig C420w is a transformer MIG/MAG welder with liquid cooling. The working range runs from 50 A to 420 A, at a 50% duty cycle the machine gives 420 A, and at 100% it gives 315 A. The supply is 400 V.
What this machine is for
This is a power source for makers of steel structures and plants that weld repeatable parts. You set the current in steps with a switch, and the wire feed steplessly with a knob, so operation comes down to two settings and there is no menu to click through. The transformer build stands up to dust and to hall conditions.
The machine has a two stroke mode, a four stroke mode and spot welding. Two stroke suits short welds and tacking, four stroke rests the hand on long runs, and spot welding joins thin sheets in a set time. Liquid cooling holds the temperature of the torch, so at 420 A and long beads the torch does not heat up as fast as with a gas circuit.
Features and equipment
- Stepped welding current adjustment with a switch, repeatable settings.
- Stepless wire feed adjustment with a separate knob.
- Two stroke and four stroke modes and spot welding.
- Liquid cooling of the torch.
Technical data
| Brand | ESAB |
|---|---|
| Type | transformer MIG/MAG welder |
| Working range | from 50 A to 420 A |
| Duty cycle | 420 A at 50%, 315 A at 100% |
| Current adjustment | stepped |
| Wire feed adjustment | stepless |
| Working modes | 2 stroke, 4 stroke, spot welding |
| Supply voltage | 400 V |
| Cooling | liquid |
What you get
- MIG welding torch 4 m for 500 A, liquid cooled
- Earth cable about 3 m
- Supply cable 3 m
What to watch out for
The supply is 400 V three phase, that is a power circuit at the station. A transformer build is heavier than an inverter one, so you plan transport on a pallet. Stepped adjustment gives settings one switch step apart, and you correct the arc with the wire feed.
Liquid cooling calls for a check of the fluid level, the flow and the tightness of the quick couplings before the start. The torch in the set is 4 m long and rated for 500 A.
This unit is sold
This machine has already gone to a customer. Similar units are listed below, and if you want the same model, leave your contact details in the form and we will let you know when the next one arrives.











