
Device functions & components
- MIG/MAG - Metal arc welding with direct current (DC). Welding can be done with inactive/inert (MIG, e.g. argon) or with active (MAG, e.g.CO2) gases. Gas and welding wire come from one torch head, allowing welding operations to be performed with only one hand.
- Synergic wire feed: The wire feed speed is controlled fully automatically via the welding current.
- 2 in 1 combination unit - MIG/MAG & MMA welding is possible up to 270 A.
- IGBT Technology - Latest and most advanced transistor technology enables highest power and duty cycle (ED)! No transformer, no MOSFET, most modern IGBT!
- Lightweight & compact design - only 16.6 kg weight and dimensions of 590 x 220 x 590 mm. Innovative IGBT transistors save space and weight compared to old MOSFET technology. No more heavy carrying!
Device features & benefits
- Highest Efficiency & Power - Three-phase AC power (400 V) supplies the unit and allows output power of true 270 amps.
- Smart Cooling & Overheat Protection - State-of-the-art technology, built-in overheat protection, and high-performance cooling allow for maximum power retrieval.
- Automatic wire feed - the speed of the wire feed is automatically controlled by the set welding current.
- Inductance - continuously adjustable choke that smooths the welding current and improves weld quality and ignition characteristics.
- 4 roller drive - reliable and powerful wire feed. Thanks to 4 drive rollers, even thicker wires are fed continuously and safely.

- Current voltage (volts) - Variable voltage control to manually adjust the burn-in and burn-off of the wire. Thus, the different properties of a wide variety of materials can be acted upon.
- Manual wire push-through - no more gas loss or tedious pushing of the wire through. If a new wire roll is to be fed through the hose package, this is done conveniently from the unit using the red wire feed button when the hose package is laid out.
- Wire reel - Commercially available wire reels from 5kg to 15kg can be processed here. The spool mandrel can accommodate 50mm spools.
- Wire drive roll - by simply changing the drive roll, welding wire from 0.8 to 1.2mm can be processed.
- MMA electrode welding / MMA welding - is a universal welding process.
- Note: The device is not intended for use in residential areas where the power supply is provided by a public low-voltage supply system. It may be difficult to ensure electromagnetic compatibility in these areas due to both conducted and radiated interference.

Technische Daten
Output current MIG / MMA | 45-270 A |
Protection class | IP21S |
Insulation class | F |
Mains voltage | 400 V AC (+-15%) / 3 ~ (three-phase) |
Mains frequency | 50/60 Hz |
Maximum mains current (I1max) MIG / MMA | 13.6 A / 15.2 A |
Maximum effective mains current (I1eff) MIG / MMA | 4,3 A / 4,8 A |
Weight | 16,6 kg |
Dimensions L x W x H (mm) | 590 x 220 x 590 |
Mains connection | CEE 16 |
Standards | IEC 60974-1; EN 60974-10 (Class A) |
Lieferumfang
- The welding machine STAHLWERK MIG 270 ST IGBT
- Professional MIG welding torch AK-25 / hose package 4 meters with Euro central connection.
- MIG accessory set 3-piece (this is already pre-mounted on the MIG/MAG torch):
- 1 x gas nozzle
- 1 x current nozzle 0,8 mm
- 1 x current nozzle holder
- Ground cable 5 meters.
- Electrode holder 5 meter.
- Wire brush
- Gas connection hose with quick coupling 5 meters.
- Wire guide roll 1.0 mm & 1.2 mm (0.8 mm & 1.0 mm is already built in the unit)
- 1 x contact tip 1.0 mm
- 1 x contact tip 1.2 mm
- Snap-on connection set
- Protective cover



