Combined Welder - 300 A - 400 V - MIG/MAG - TIG - MMA -FCAW
Manufacturer: Stamos Germany | Item number: EX10021084 | Model: S-MULTI 300
Note: A 400 V plug is not included in delivery.
- High-performance - MIG/MAG, TIG lift-arc and MMA welding with up to 300 A
- Modern - digital menu navigation with 2 LED displays
- Precise - control knobs for current, voltage, wire feed speed and inductance
- Versatile - additional functions include VRD, arc force and anti-stick
- Portable - increased mobility thanks to four wheels and space for a gas cylinder
Powerful combined welder for all common welding situations
The powerful professional combined welder S-MULTI 300 from Stamos Germany proves itself with its universal applications and high-quality welds with a low error rate. Whether you are welding with or without shielding gas, the combined welder's four welding methods, MIG/MAG, TIG, MMA and FCAW, offer the perfect solution for every welding situation.
MIG/MAG - fast, effective and universally-applicable
With a duty cycle of 60 percent, the welding current has a maximum power of 300 A. If you turn the power down to 230 A, then you can weld without interruption. The clearly arranged control panel with two LED displays gives you maximum control over the required welding parameters and is also easy to use while wearing welding gloves. You can freely adjust the amperage and the voltage (MIG), specify the inductance, switch between 2-stroke or 4-stroke operation, or choose the welding process you require.
When it comes to MIG / MAG welding, the welding seam is protected with gas: inert gas for MIG welding, and active gases for MAG. You can easily specify the inductance via a control knob when MIG/MAG welding. Other knobs allow you to set the wire feed between 2.5 and 24 m/min and set the welding voltage. For aluminium welding, we recommend using the spool gun SP-01-3M, also available from Stamos Germany.
TIG - tried and tested with cutting-edge lift-arc ignition
FCAW welding produces a weld seam by means of a cored wire, without the need for additional gas as protection. Its versatility makes it suitable for a wide range of small metalwork, repairs or base welding work on cars.
The S-MULTI 300's TIG welding process uses gentle lift-arc ignition to activate the arc, which can be used even in the presence of sensitive electronic devices such as computers and control systems and which is distinguished by fewer ignition problems. You can easily control the TIG welding values via the control panel.
MMA - flexible electrode welding without extra gas
No additional gas is required for MMA (Manual Metal Arc) welding, enabling you to use it outdoors even in strong wind. The arc force and anti-stick functions ensure optimal welding results. The VDR function can be enabled for increased security through voltage reduction, especially when you need to weld in damp environments.
The MMA welding machine is equipped with an undercarriage which makes it especially easy to transport. There is space above the rear wheels for a gas cylinder which can be secured with a bracket and two chains.
- Combined welder S-MULTI 300
- Trolley with four wheels
- Gas hose (3 m)
- MIG torch with cable assembly (3 m)
- TIG torch with cable assembly (4 m)
- Electrode holders with cable (3 m)
- Earth clamp with cable (3 m)
- 2 cable clamps, Ø 14.7 mm
- Universal key
- 2 chains
- 2 MIG contact tips
- Tungsten electrode
- Ceramic nozzle (5, 6, 7)
- TIG - electrode collet
- Long cap
- Accessory bag
- Assembly materials (screws)
- 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.
Show moreShow lessPowerful fans ensure an optimal removal of heat from the unit.
TIG/MIG and MAG welding require a protective gas. Inert gases, such as argon and helium, as well as active gases (for example carbon dioxide) and other mixtures can be used. The solenoid valve regulates the flow of gas. The valve is operated via a button on the torch.
Show moreShow lessOn 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 %).
Start the weld by placing pressure on the torch button. Stop the process by releasing the button.
By pressing the torch button the solenoid valve opens. allowing the gas to flow in. The gas pre-flow ignites the arc at the pre-set current. Releasing the burner button initiates a rise in the current to that of the pre-set welding current. The welding process stops once you press the burner button again.
Show moreShow lessThe 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.
Along with the current change the value of the inductance is changed to reduce the amount of spatter.
A welding method in which the arc is maintained through an electrical current supplied from a non-consumable electrode. The arc is protected from the access of air by an inert gas.
Show moreShow lessElectrode welding with a coated electrode.
Welding with wire feed in a protective atmosphere.
Choose between the 2T and 4T mode.
By using the SHIFT key the welding mode can be selected.
Shows the welding / cutting parameters.
Does this device have anti-stick?
Yes, the device falls back on anti-stick during MMA welding to prevent the electrode from sticking.
I'm looking for a welding mask, can I get them from expondo?
You can find a wide selection of welding hoods from expondo under "Welders", in the subcategory "Welding Accessories".
Mycket bra svets!

Still not sure?
Our experts are ready to help!- 300 A / 400 V
- MIG/MAG/TIG/MMA
- 60 % duty cycle
- Arc force, anti-stick
- 2-stroke / 4-stroke
Ready to ship today, Delivery time appr. 6-10 working days

Combined Welder - 300 A - 400 V - MIG/MAG - TIG - MMA -FCAW
Ready to ship today, Delivery time appr. 6-10 working days
- 300 A / 400 V
- MIG/MAG/TIG/MMA
- 60 % duty cycle
- Arc force, anti-stick
- 2-stroke / 4-stroke
- Plasma Spare Parts
- Diffusers: 1x
- external protection cap: 1x
Ready to ship today, Delivery time appr. 6-10 working days

Plasma Spare Parts Set - Prolox60 / Trexus50 - Set Z
Ready to ship today, Delivery time appr. 6-10 working days
- Plasma Spare Parts
- Diffusers: 1x
- external protection cap: 1x
- For MULTI-S 300
- 130 A / 30 % duty cycle
- Wire Ø: 0.6 - 1 mm
- Spool Ø: 100 mm
- 0.5 kg free wire included
Ready to ship today, Delivery time appr. 6-10 working days

Welding Torch Spool Gun - for S-MULTI 300
- for all common welding procedures
- Light protection DIN 4 – 8 or DIN 9 - 13
- 100 x 65 mm field of view
- Switching time 1 / 30,000 s
- Delay time (0.25 - 0.8 s)
Ready to ship today, Delivery time appr. 6-10 working days

Welding helmet –Pokerface - PROFESSIONAL SERIES
- Heat-resistant gloves
- Cow split leather with cotton lining
- 5-finger design
- High-quality premium seams
- Size 10 (XL)
Ready to ship today, Delivery time appr. 6-10 working days

Welding Gloves Type A - size 10 / XL
- for all common welding procedures
- Light protection DIN 4 – 8 or DIN 9 - 13
- 100 x 65 mm field of view
- Switching time 1 / 30,000 s
- Delay time (0.25 - 0.8 s)
Ready to ship today, Delivery time appr. 6-10 working days

Welding helmet – Metalator - EXPERT SERIES
- 10 set replacement protection lenses
- for Firestarter500, Eagle Eye, and Blaster
- Polycarbonate
- Transparent
- 130 x 120 x 20 mm
Ready to ship today, Delivery time appr. 6-10 working days

10 set outer protection lens - Metalator/BlackONE/Carbonic/Pokerface/Legend
- MIG/MAG / MMA / WIG / FCAW
- 400 V
- 250 A / Duty Cycle 60 %
- Hot Start, Arc Force, Anti-Stick
- 2-Step / 4-step
Ready to ship today, Delivery time appr. 6-10 working days

Multi Process Welder - 250 A - 400 V - MIG/MAG - WIG - E-Hand - FCAW
- TIG – MIG/MAG – MMA - FCAW
- 230 V / 200 A
- Digital, programmable
- 2-stroke / 4-stroke
- VRD / synergy
Ready to ship today, Delivery time appr. 6-10 working days

Combined Welder - Digital - TIG - MIG/MAG - MMA - 200 A
- MIG / MAG / MMA / FLUX
- 400 A / 400 V
- Water-cooled
- 60 % duty cycle
- VRD / 2-touch / 4-touch
Ready to ship today, Delivery time appr. 6-10 working days

MIG/MAG Welding Machine - 400 A - 400 V - water-cooled
- TIG - MIG / MAG-MMA - FCAW
- 230V
- 50 Hz
- Welding current up to 195 A
- IGBT
Ready to ship today, Delivery time appr. 6-10 working days

Combined Welder - TIG - MIG/MAG - E-Hand - FCAW - 195 A
- TIG AC-DC / MMA
- 200 A / 230 V
- Digital, programmable
- Pulse function / 2/4-step
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Ready to ship today, Delivery time appr. 6-10 working days

Aluminium Welder - TIG AC/DC - 200 A - Digital - 230 V - Pulse