Electrode Welder - 400 A - arc force

Manufacturer: Stamos Power ² | Item number: EX10021237 | Model: S-ARC 400LT

Electrode Welder - 400 A - arc force
Electrode Welder - 400 A - arc force
Electrode Welder - 400 A - arc force
Electrode Welder - 400 A - arc force
Electrode Welder - 400 A - arc force
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Instead of: £499.00   You save £230.00   £269.00 Instead of: £499.00  

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  • 3 years guarantee

Product highlights

  • MMA
  • Output: 400 A
  • 2 LED displays
  • Hot start, arc force, anti-stick
  • IGBT inverter

  • Effective—electrode welding machine with control knobs for current and arc force
  • Powerful—welding current up to 400 A and duty cycle of 100 % at 325 A
  • Reliable—modern IGBT technology for optimal welding parameters
  • Precise—optimal welding results with hot start, arc force and anti-stick
  • Highly visible—maximum control thanks to values shown on two LED displays

Electrode welder with 400 A

With welding strengths from 20 to 400 A and a modern IGBT inverter, the S-ARC 400LT electrode welder offers all the possibilities for welding a wide range of metals quickly and efficiently. This makes it perfectly equipped for various jobs in production or the workshop.

More power when welding with the electrode welder from Stamos Power2

The electrode welding machine is powered by a 400 V power source. The current can be set to between 20 and 400 A with a dial. Two LED displays show the corresponding values in ampere and volts. This gives you maximum control when choosing the required welding current. In addition, you can determine the strength of the arc force function and thus optimally adjust the arc.

If the power is reduced to 325 A, the duty cycle can be increased to the point where you can weld without interruption. The MMA welding machine does not require shielding gas, so you can work precisely even under adverse conditions, such as in high winds. With the MMA welder, you can weld a variety of materials such as steel, iron, cast iron, nickel or copper.

The arc force function regulates the arc sensor and adapts it to the perfect density for the respective material. A handy rotary control is available for this purpose. The hot start and anti-stick functions are controlled automatically. Hot start optimally and instantly heats the weld at the starting point, which prevents the electrode from sticking and guarantees stable and clean welding from the first moment. The anti-stick function prevents the electrode from overheating and sticking to the welding material by switching off the welding current.

The mobile welding machine has a practical handle that allows you to carry it comfortably. Overheat protection and a fan protect the technology inside the unit from excessive heat.

Mains input
400 V
Max. current strength
400 A
Max. input power
18.2 kVA
Rated input power
16 kVA
Open circuit voltage
90 V
Max. input current
48 A
Rated input current
37 A
Welding current
20 - 400 A
Duty cycle at 400 A
60 %
Welding current at 100% duty cycle
325 A
Duty cycle at 40 °C
60 %
Power factor
90 %
Diameter, MMA electrode
1.6 - 6 mm
Hot start
Arc force
Device cooling
Insulation class
Protection class
Length of electrode holder with cable
3 m
Length, ground cable
3 m
Length, power cable
3 m
Dimensions (LxWxH)
48.00 x 23.50 x 41.00 cm
21.40 kg
Shipping dimensions (LxWxH)
58.00 x 36.00 x 50.00 cm
Shipping weight
23.40 kg
Delivery Package
  • Electrode welder S-ARC 400LT
  • Electrode holders with cable (3 m)
  • Grounding cable (3 m)
  • Instruction manual

IGBT = insulated-gate bipolar transistor. IGBT is a bipolar transistor with an insulated gate electrode. This semi-conducting device is being increasingly used in power electronics because it combines the advantages of two transistor types: the easy controls of the field effect transistor and the fast switching and high breakdown voltage of the bipolar transistor. The IGBT also offers some robustness against short circuits because it limits the electrical continuity. IGBTs are a further development of MOSFET technology.

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Powerful fans ensure an optimal removal of heat from the unit.


On the back of every welding machine is a screw with an earthing mark. Before use, earth the unit via a cross-section cable, which must be at least 6 mm².






This device works with a 3-phase connection (400 V +/- 10 %).




Through automatically boosting the tension at the ignition of the arc, this function facilitates the electrical arc ignition. After ignition, the unit automatically returns to the pre-set voltage.

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The current value increases automatically when the arc is shorter.


This function helps to prevent overheating of the electrode by switching off the welding current when the electrode sticks to the material.


Electrode welding with a coated electrode.




Shows the welding / cutting parameters.

Can I also connect a TIG lift arc welding torch to the device?

Yes, but you must change the connections (the earth cable must be connected to the ‘+’ connection, the connection for the TIG lift arc torch to the ‘-’ connection) and arc force must be set to the lowest level. Then you can also weld TIG with a TIG lift arc welding torch.

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Reviews from karl danninger (30 Oct 2021)
Reviews from karl danninger (30 Oct 2021) so macht schweissen spass

ist ne richtige industrie maschine,richtig power ,empfehlungswert

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This product
  • MMA
  • Output: 400 A
  • 2 LED displays
  • Hot start, arc force, anti-stick
  • IGBT inverter

This product is currently not available.

Electrode Welder - 400 A - arc force

Electrode Welder - 400 A - arc force

Instead of: £499.00   £269.00  

This product is currently not available.

  • MMA
  • Output: 400 A
  • 2 LED displays
  • Hot start, arc force, anti-stick
  • IGBT inverter