
Device functions & components
- MMA electrode welding / ARC welding - a universal welding process. An electric arc causes the electrode to melt, forming the weld seam. No shielding gas is required, making it flexible for use in any location.
- IGBT Technology - Latest and most advanced transistor technology enables high performance welding! No transformer, no MOSFET, most modern IGBT!
- Lightweight & compact design - only 10.3 kg weight and dimensions of 455 x 220 x 370 mm. Innovative IGBT transistors save space and weight compared to old MOSFET technology. No more heavy carrying!
- Highest Efficiency & Power - Three-phase AC power (400 V) supplies the unit and allows an output power of real 270 Amps.
- Digital Display - A clear digital display makes it easy to read the welding parameters that have been set. The various modes can be quickly set using the intuitive menu.
Device features & benefits
- Hot Arc - Adjustable current increase at start for better ignition results. Prevents sticking of the stick electrode and heats up the weld start faster by briefly superimposing the set welding current.
- ARC Force - Adjustable spray arc with which the arc width can be continuously regulated.
- VRD - Mode in which the open-circuit voltage is reduced to maintain a constant output even at high welding currents.
- Anti-Stick - Automatic shutdown of the welding current when the electrode sticks, allowing easy removal. It also prevents the electrode from annealing.
- Smart Cooling & Overheat Protection - State-of-the-art technology, built-in overheat protection and high-performance cooling allow you to retrieve maximum power.
- Note: The unit is not intended for use in residential areas where power is supplied by a public low-voltage power system. It may be difficult to ensure electromagnetic compatibility in these areas due to both conducted and radiated interference.


Technische Daten
Output current | 20-270 A |
Protection class | IP21S |
Mains voltage | 400 V AC (+-15%) 3~ |
Mains frequency | 50/60 Hz |
Maximum mains current (I1max) | 20 A |
Maximum effective mains current (I1eff) | 8,9 A |
Weight | 10,3 kg |
Dimensions L x W x H (mm) | 455 x 220 x 370 |
Mains connection | CEE 16 plug |
Standards | IEC 60974-1; EN 60974-10 (Class A) |
Lieferumfang
- The welding device STAHLWERK ARC 270 ST IGBT
- Ground cable 3 meters
- Electrode holder 3 meters
- 20 rod electrodes
- Protective shield
- Wire brush
- Protective cover



