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The Power TIG 255EXT is a top-equipped AC / DC tig for welding both steels and aluminum. The machine is suitable for both enthusiasts and demanding professional welders. Reliability is top notch.

With water-cooled WP18 burner as standard. In digital control, 9 memory slots for settings

For professional use, we have equipped the machines with high-quality Tafimet burners, so that the package satisfies even the most demanding taste.

2.262,00 inc. VAT

Stock level:

In stock

Warranty: 2 years


IGBT Type: Module IGBT
Inverter Type: Digital/Micro-controlled
Output Type: AC/DC TIG, DC Stick
Voltage/phase: 400V 3 PHASE
Max Rated TIG Amps: 240V: 250A
Max Rated Stick Amps: 240V: 200A

TIG Amps @ Rated Duty Cycle: 240V
250A/20V @ 60% Duty Cycle/ 40º C
200A/18V @ 100% Duty Cycle/ 40º C

Max Inrush ( I1MAX ) Amps:
@240V: 38A
Maximum Rated (I1EFF ) Input Amps:
@ 240V: 30A
90V/VRD: <24V

TIG Output Range DC:

TIG Output Range AC:
240V: 5A-250A/ 10.2V-20V

Stick Ouput Range DC:
240V: 20A-200A/20.8V-29V

Stick Hot Start Amps: 0-100%
Stick Function: Adjustable Arc Force Control
Stick Hot Start Type: Adjustable Hot Start
Stick Hot Start Time: 0-2 Seconds

6010/Cellulose Capable: Yes
Minimum Amp DC TIG Start: 3A
Minimum Amp AC TIG Start: 5A

TIG Start Type: HF and Lift Start
Memory: Yes
Start Amp Range:
DC: 5A-250A
AC: 5A-250A
End Amp Range:
DC: 3A-250A
AC: 5A-250A

Upslope Time: 0-25 Seconds

Down Slope Time: 0-25 Seconds

Preflow time: 0-25 Seconds

Post Flow Time: 0-50 Seconds

TIG Pulse:  Yes
Standard DC Pulse Frequency: .1-500 Hz
Standard AC Pulse Frequency: .1-250Hz
AC Advanced Pulse Frequency: .1-10Hz
Pulse Time On (Duty Cycle): 3-100%
Pulse Amp Range: 5-95%
AC Frequency (Hz): 20-250Hz
AC Balance Range: 5-90%

AC Wave Forms:
Advanced Square
Soft Square
Remote Control:
2T/4T with Torch Amptrol settings

Weight: 30 kg
Dimensions: 56 cm × 23 cm × 43 cm



If you are looking to take your shop or business to the next level in TIG welding capability, the digital inverter-based PowerTIG 255EXT delivers exceptional power and performance at a budget friendly price.   In fact, the PowerTIG 255EXT not only has a long list of competitive features but also unique features that distinguishes it from the competition.  You’ll find surprisingly comptetive performance when comparing feature to feature against the competition such as memory, pulse and wave forms thanks to the digital microprocessor. When you compare the additional features and the price advantage the welder offers such as the advanced AC pulse and stick performance features such as hot start and arc force control , the PowerTIG 255EXT really stands on it’s on.  Advanced pulse is a new feature introduced on the digital PowerTIG  units which improves top and low end performance on Aluminum.  It can be set up to increase penetration on thick aluminum up to 25% over what is traditionally accepted as the maximum limit for the maximum output of the welder.   Two “Easy Start Up” modes also add to the units versatility while keeping operation simple. The unit also excels as a stick welder featuring hot start time, hot start intensity and arc force control adjustments, making it a perfect welder for E6010 or E7018 welding.  Everything on the AC/DC pulse TIG welder has been carefully designed for maximum life and repairability down the road with componentized design and IGBT module components from name brand manufacturers.  This make diagnosis and repair a simple and easy process.  Several new features have been recently released.  The spot weld timer feature allows the operator to make perfect, consistent spot welds when tacking up or welding sheet metal.  The unit also has a more convenient way to purge gas and set gas without initiating arc flow with a dedicated purge button.   Most importantly the PowerTIG 255EXT operates on 120V or 240V.  Maximum output during 120V operation is 150 Amps for TIG, and 120 Amps for stick.



If using with a generator, be sure that the generator is rated by its manufacturer as clean power output. This means that the total harmonic distortion (THD) is less that 5%. Use a generator capable of at least 10,500 surge watts for 240V operation, for best performance, consider using a generator with 12,500 surge watts or more.



Weld steel to a maximum of 1/2″ single pass (240V)
Weld steel to a maximum of 1+” multi-pass (240V)
Weld aluminum to a maximum of 1/2″ single pass (240V)
Weld aluminum to a maximum of 1+” multi-pass (240V)
Weld aluminum to a maximum of 1/4″ multi-pass (240V
Weld to a minimum of .004″ Steel
Weld to a minimum of .005″ Aluminum
TIG ratings based off of industry accepted standard practices for quality single and multi-pass welds. AC advanced pulse, when adjusted properly can weld thicker than standard welders with 250 amps output and this is included in Steel and Aluminum maximum capacity statements.


Weld with a minimum of 1/16″ diameter electrode
Weld with a maximum of 3/16″” diameter electrode (240V)
Stick electrode maximum size is ultimately dependent upon type/class of electrode and manufacturer’s recommendation.