PowerTIG 255EXT

  • Rugged Digital IGBT Inverter
  • Industrial 60% Duty Cycle at 250 Amps
  • AC/DC TIG/ DC Stick functions
  • Solid State HF or Lift TIG start
  • Pulse up to 500 Hz DC; 250 Hz AC
  • Advanced Square, Soft Square, Triangular, and Sine wave forms
  • Adjustable Stick Arc force and Hot Start Control
  • Advanced AC Pulse
  • 120V/240V Operation
Special Price $2,374.05 Regular Price $2,499.00
In stock

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 repairibility down the road with componentized design and IGBT module components from name brand manufacturers , making diagnosis and repair, a simple, 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.

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Digital microprocessor control
Heavy-Duty IGBT Power Modules increase reliability and performance
True low amp operation down to 3 amps DC and 5 amp AC
2T/4T/ Pedal operation modes with additional 2T/4T mode for torch amptrol operation.
Wave form control in AC provides 4 wave forms: Sine, Triangular, Soft Square and Advanced Square Wave
New High Frequency design reduces maintenance issues and improves start reliability
No hidden menus to access or complicated set up routines
Simplified menu design allows settings to be quickly selected and adjusted
Easy Start Up feature in AC or DC modes to make setup quick and easy for the beginner, or the advanced user
Pulse up to 500Hz in DC, 250 Hz AC
10Hz Advanced AC Pulse mode improves penetration on thicker metals, and can reduce warping and burn through on thinner metals
Arc force control, Hot start time, Hot start intensity settings for Stick welding to improve performance
VRD function to help reduce chance of shock or electrocution in areas where a VRD is required or needed for stick welding
Built in receptacle for PowerCool 300 water cooler
Full time fan for maximum duty cycle operation
120V/240V operation
Spot Weld Timer
6010/Cellulose Stick welding capability
12.5 ft Everlast 20 Series TIG torch with 35 DINSE style connectors and torch switch for 2T/4T operation
12.5 ft Everlast 9 Series TIG torch with 35 DINSE style connectors and torch switch for 2T/4T operation
New style stick electrode holder with 10ft cable and 35 series DINSE style connectors
Heavy Duty Work clamp with 10 ft Cable and DINSE style connectors
New, redesigned compact foot pedal
New Everlast Regulator made from billet brass
Consumable Starter Kit (Tungsten not included)
6 ft Power input cable
IGBT Type:
Module IGBT
Inverter Type:
Output Type:
Max Rated TIG Amps:
240V: 250A
120V: 150A
Max Rated Stick Amps:
240V: 225A
120V: 120A
TIG Amps @ Rated Duty Cycle:
150A/16V @ 60% Duty Cycle/ 40° C
120A/14.8V @ 100% Duty Cycle/ 40° C

250A/20V @ 60% Duty Cycle/ 40º C
200A/18V @ 100% Duty Cycle/ 40º C

Stick Amps @ Rated Duty Cycle:
120A/24.8V @ 60% Duty cycle/40° C
90A/23.6V @ 100% Duty Cycle/ 40° C
225A/ 29V@ 60% Duty Cycle/ 40°C
175A/27V @ 100% Duty Cycle/ 40º C
Max Inrush ( I1MAX ) Amps:
@120V: 35.7A
@240V: 33.6A
Maximum Rated (I1EFF ) Input Amps:
@120V: 29A
@ 240V: 27A
70V/VRD: <24V

TIG Output Range DC:
120V: 3A-150A/10.1V-16V
TIG Output Range AC:
120V: 5A-150A/10.2V-16V
240V: 5A-250A/ 10.2V-20V
Stick Ouput Range DC:
120V: 20A-120A/20.8V-24.8V
240V: 20A-225A/20.8V-29V
Stick Hot Start Amps:
Stick Function:
Adjustable Arc Force Control
Stick Hot Start Type:
Adjustable Hot Start
Stick Hot Start Time:
0-2 Seconds
6010/Cellulose Capable:
Minimum Amp DC TIG Start:
Minimum Amp AC TIG Start:
TIG Start Type:
Solid State HF
TIG Start Type:
Solid State HF and Lift Start
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:
Standard DC Pulse Frequency:
.1-500 Hz
Standard AC Pulse Frequency:
AC Advanced Pulse Frequency:
Pulse Time On (Duty Cycle):
Pulse Amp Range:
AC Frequency (Hz):
AC Balance Range:
AC Wave Forms:
Advanced Square
Soft Square
Remote Control:
2T/4T with Torch Amptrol settings
Foot Pedal:
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 9500 surge watts for 240V operation, and 4200 surge watts for 120V.

Weld steel to a maximum of 1/2" single pass
Weld steel to a maximum of 1+" multi-pass
Weld aluminum to a maximum of 1/2" single pass
Weld aluminum to a maximum of 1+" multi-pass
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
Stick electrode maximum size is ultimately dependent upon type/class of electrode and manufacturer's recommendation.