TIG DC Welder - 200 A - Digital - 230 V - Pulse

Manufacturer: welbach | item number: EX10020165 | Model: IOTA 200

TIG DC Welder - 200 A - Digital - 230 V - Pulse
TIG DC Welder - 200 A - Digital - 230 V - Pulse
TIG DC Welder - 200 A - Digital - 230 V - Pulse
TIG DC Welder - 200 A - Digital - 230 V - Pulse
TIG DC Welder - 200 A - Digital - 230 V - Pulse
TIG DC Welder - 200 A - Digital - 230 V - Pulse
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  • 30 days return service

  • 3 years guarantee

Product highlights

  • 200 A / 230 V
  • Digital display
  • Hot start / arc force
  • Pulse function / 2 - / 4-stroke

Selecting the parameters is particularly comfortable, thanks to the clearly arranged control panel. The knob/buttons for selecting functions/welding parameters are easily accessible and a breeze to use even when wearing welding gloves. The intuitive menu navigation allows you to effortlessly adjust all values ​​such as pulse rate, gas post-flow time or welding current. All selected parameters are clearly visible on the LED display.

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For welding thin sheets, the pulse function is particularly helpful. Even under difficult conditions, the arc can be easily stabilised, since the pulse frequency is adjustable up to 200 Hz. It is also possible to select numerous parameters such as initial base current or final current for pulsed current welding, and optimally adjust them to the workpiece with the aid of the knob.

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The modern IGBT inverter impresses with its precise conversion of the selected welding parameters, thereby making perfect welding seams possible. In addition, it supports an easy change between the typical functions of TIG welding and simple switching between 2 - or 4-stroke welding. The welding arc is activated via the proven high-frequency ignition (HF).

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The ergonomically shaped torch produces little sparks and spatter when TIG welding and also guarantees pure, high quality welds that leave hardly any deformations. During its welding process, the IOTA 200 welder employs direct current (DC) , thus enabling it to be used for almost all types of melting metal, including their alloys such as aluminum, copper, nickel, titanium or steel. Welding is possible from different positions, be it vertical, horizontal or overhead.

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For MMA (Manual Metal Arc) welding no additional gas is required, enabling it to be used outdoors, even when there is strong wind. With this welding method, the welder generates a very stable current, all the while securely maintaining the voltage. Consequently, obtaining high quality welds out of all sorts of different metals is guaranteed.

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The HOT-START-function of the electrode welder procures an automatic and short-term increase of the welding current. Thanks to this “Hot Start”, the starting point is immediately heated to the optimal temperature and the electrodes do not clog. You get perfect welding results from the first try.

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The ARC FORCE regulates the arc sensor and adapts it to the perfect density for the respective material. Via the digital control panel, you can select the ampere strength for ARC Force and the duration for the hot start function.

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The E-hand-clamp seizes even large electrodes with a diameter of up to 5 mm. With the E-hand (MMA) welding method, the device can weld materials with a strength from 1,5 to 10 mm such as steel, iron, cast iron, nickel or copper. With the welding machine you can correctly carry out installations of railings maintenance, stairs, gates, doors, containers or any equipment made of metal.

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The powerful air cooling and the overheating protection, displayed next to the LED display, provide this device with long-lasting reliability and durability. A handle in the stable metal housing facilitates transporting the device, while the supplied hoses and cables with lengths from 2,6 to 3,7 meters allow maximum freedom of movement during welding.

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  • digital, easy to use display
  • intuitive selection of function and parameters by means of buttons and knobs
  • precise adjustment possibilities of the pulse function and gas pre- and post-flow time
  • modern IGBT inverter with high frequency ignition, 2T / 4T function
  • e-manual welding (MMA) hot start and ARC force

TIG DC Welder - 200 A - Digital - 230 V - Pulse

Digital technology is not only modern, it also enables cleaner and more precise work. With the welding set IOTA 200 from Welbach, you can directly use the advantages of our digital techniques, as they become evident at first sight. The control panel is not burdened with a multiplicity of aligned knobs anymore. Instead, you only have a few switches, a turnable regulator as well as a display, which can be used intuitively.

IOTA 200
Item number
Nominal input voltage
230 V
50 Hz
Max. input current
44,3 A (TIG)
37,1 A (MMA)
Max. Input power
10,2 kVA (TIG)
8,6 kVA (MMA)
Open circuit voltage
59 V
Ignition (TIG)
HF - high-frequency
Welding current TIG-DC
MMA welding current
Operating time / duty cycle
35 % (TIG)
20% (MMA)
Welding current at 100% ED
118 A (TIG)
80 A (MMA)
Welding current at 60% ED
152 A (TIG)
103 A (MMA)
Welding current TIG at 60% ED
200 A
Welding current at MMA 20% ED
180 A
Power coefficient
0,7 %
Pulsing current
5 - 200 A
Pulse rate
0.5-200 Hz
Pulse start current
10-200 A
Pulse peak current
10-200 A
Pulse transmission power
5 - 200 A
Base current
10-200 A
Pulse width
10 – 90%
Current value increase
0 - 60 s
Current value increase
0 - 60 s
Spot welding
0,1 - 10 s
Gas post-flow time
0 - 20 s
Gas pre-flow time
0 - 0,3 s
Diameter electrode (TIG)
1- 3,2 mm
Diameter electrode (MMA)
1,6 - 5 mm
Welding strength (TIG)
1 - 8 mm
Welding strength (MMA)
1,5 - 10 mm
Hot Start
0.01-1 s
0 - 180 A
2 - / 4-stroke
Selector switch
Push button
Diameter gas supply
9 mm
Diameter gas connection
12 mm
Diameter connection TIG torch
13 mm
Length of electrode holder with cable
3,6 m
Ground cable length
2,6 m
Length TIG hose package
3,7 m
Power cable length
2,15 m
Insulation class
Protection class
Torch cooling
Dimensions (LxWxH)
42 x 14 x 28,5 cm
6,4 kg
Shipping dimensions (LxWxH)
47 x 27 x 33 cm
Shipping weight
10,8 kg
Technical drawing
Delivery Package
  • TIG welder IOTA 200
  • Electrode holders with cable: 3.6 m
  • Ground cable with clamp: 2.6 m
  • Welding torch with hose package: 3.7 m
  • 3 gas nozzles (5, 6, 7 mm)
  • Long torch cover
  • Short burner cap
  • 3 clamping sleeves - 2,0 / 2,4 / 3,2 mm
  • Collet housing
  • Operating instructions

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.


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.

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This device works with a 1-phase connection (230 V +/- 10 %).


A non-contact high-frequency ignition in TIG mode ensures a cleaner weld starting point.


This is the time taken from the moment of pressing the torch button to that of the electric arc igniting. During this process the solenoid valve opens and the released gas pushes the oxygen from the gas lines and in doing so, forms a protective atmosphere for the arc.

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Value of the arc ignition output current. This current can be adjusted at will. For precision welding, it is recommended to start with reduced power, weld smoothly and eventually adjust the current accordingly.

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The time taken by the output power to rise to that of the welding current’s value.




The time taken of the output welding current to lower to that of the terminal current.


The output current value before the end of the weld. Welding with the final current helps prevent a crater forming at the end of the weld.


The time after the weld is finished in which gas continues to flow from the torch; this cools the burner and protects the weld from oxidation.


This function reduces the heat to the material. It is primarily suitable for welding thin plates. If MIG welding is used, it is perfect for aluminium welding.


The frequency of impulses during pulse mode.


The current which maintains the arc while in pulse mode.


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.

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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.


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.

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Electrode welding with a coated electrode.




Choose between the 2T and 4T mode.


By using the SHIFT key the welding mode can be selected.


Shows the welding / cutting parameters.


The LED light indicates overheating or a malfunction.

Do I have to prepare the workpiece for welding? And if so, how?

Chemical and flammable substances must be removed before welding from the surface, because they can catch fire and toxic substances can be released.

How can I clean the appliance?

The appliance must be disconnected from the mains before cleaning. Use cleaning agents that prevent corrosion.

Can I connect a foot pedal to the device?

No, there is no foot pedal connection for this welder.

5 Based on 2 reviews

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Reviews from Otto Weintögl (21 Feb 2022)
Reviews from Otto Weintögl (21 Feb 2022) WIG DC Schweißgerät - 200 A - Digi

das Gerät ist nicht komplett, daher unbrauchbar. Es gibt keine Elektroden, es fehlt (zumindest) eine Spannhülse und eine Gasdüse.
Die nötige Gaskupplung ist nicht vorhanden.

expondo experts reply 20 May 2022

Hallo Otto,

es tut uns leid, wenn Sie mit dem Lieferumfang im Allgemeinen nicht zufrieden sind.

Dieser wird jedoch auf unserer Webseite deutlich dargestellt:

WIG-Schweißgerät IOTA 200
Elektrodenhalter mit Kabel: 3,6 m
Massekabel mit Klemme: 2,6 m
Schweißbrenner mit Schlauchpaket: 3,7 m
3 Gasdüsen (5, 6, 7 mm)
lange Brennerkappe
kurze Brennerkappe
3 Spannhülsen (2,0 / 2,4 / 3,2 mm)

Ihr Feedback werden wir gern an die zuständige Fachabteilung weiterleiten, um eventuell notwendige Anpassungen in der Zukunft vorzunehmen.

Ihr expondo-Team

Reviews from Anonym (21 Mar 2020)
Reviews from Anonym (21 Mar 2020) Bom

expondo expert

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This product
  • 200 A / 230 V
  • Digital display
  • Hot start / arc force
  • Pulse function / 2 - / 4-stroke

This product is currently not available.

TIG DC Welder - 200 A - Digital - 230 V - Pulse

TIG DC Welder - 200 A - Digital - 230 V - Pulse


This product is currently not available.

  • 200 A / 230 V
  • Digital display
  • Hot start / arc force
  • Pulse function / 2 - / 4-stroke
  • TIG DC / MMA
  • Basic
  • 250 A/230 V
  • Pulse function
  • Duty cycle 60 %

Ready to ship today,
Delivery time appr. 4-7 workdays

TIG Welder - 250 A - 230 V - pulse

TIG Welder - 250 A - 230 V - pulse

Instead of: 419.00€   359.00€  

Ready to ship today,
Delivery time appr. 4-7 workdays

  • TIG DC / MMA
  • Basic
  • 250 A/230 V
  • Pulse function
  • Duty cycle 60 %
  • TIG / MMA
  • 200 A / 230 V
  • 2 - / 4-stroke
  • IGBT- Inverter
  • Power ventilators

Ready to ship today,
Delivery time appr. 4-7 workdays

TIG Welder - 200A - IGBT

TIG Welder - 200A - IGBT


Ready to ship today,
Delivery time appr. 4-7 workdays

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  • 200 A / 230 V
  • 2 - / 4-stroke
  • IGBT- Inverter
  • Power ventilators