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250A AC/DC Aluminum TIG Welder with Pulse, 110V/220V Dual Voltage TIG Welding Machine with DC TIG/AC TIG/Pulse TIG/SPOT TIG/Stick (GET YOUR FREE ADAPTER)

  • Based on 77 reviews
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$389.99 Why this price?
Prime Day Deal · 15% off was $459.99

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Availability: In Stock.
Fulfilled by Amazon

Arrives Friday, Jul 11
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Style: 250A AC/DC Pulsed TIG


Features

  • WARNINGDO NOT FORGET to get your FREE TIG torch adapter with promo-tion code: TIGADAPTER. Necessary adapter for connecting TIG torch to your machine! Just add item B0F1YMS3GV together with the welder in your cart and apply the promo-tion code TIGADAPTER.
  • AC/DC Professional TIG WelderSS-250P/ACDC TIG welder is capable of multiple functions: High-Frequency AC, High-Frequency DC, Pulsed AC, Pulsed DC, AC SPOT, DC SPOT and STICK. Up to 250A and dual Voltage 110/220V, meeting various of welding needs and conditions.
  • LCD Digital ScreenSunstac AC/DC TIG welder offers all-new LCD screen (surpass old LED screen), much easier to access parameters including voltage, current and other settings. The digits are clearly visible on the screen even with your helmet on that enables you great efficiency and accuracy.
  • Smart TIG Welding MachineEquipped to minimize material distortion from excessive heat input. Spot TIG welding is suitable for welds reinforcement; Pulse TIG allows for precise control, resulting in cleaner and more precise weldings. Built-in intelligent parameter saving function, allows you effortlessly restore your previous welding settings, namely, you can pick up right where you left off.
  • Aluminum TIG WelderCapable of welding most metals including Aluminum, Alloy Steel, Copper, Stainless Steel, Carbon Steel and Iron, as well as precision welding of thinner materials. For Aluminum, the max welding thickness is 5/32"(4mm) @ 110V and 6/25"(6mm) @ 220V.
  • User Friendly FeaturesThis TIG welder is designed to be super user-friendly even for beginners. Choose from 2T, 4T, or SPOT TIG modes and foot pedal remote control (not included) to match specific requirements. It automatically turns into foot pedal mode after restart if the foot pedal is plugged in.
  • The AC/DC TIG welder is equipped to minimize material distortion from excessive heat input, spot TIG welding is suitable for welds reinforcement; Pulse TIG allows for precise control, resulting in cleaner and more precise welds.

Manufacturer: ‎Sunstac


Part Number: ‎SS-250P/ACDC


Item Weight: ‎30.4 pounds


Package Dimensions: ‎20.3 x 16.3 x 13.3 inches


Item model number: ‎SS-250P/ACDC


Style: ‎250A AC/DC Pulsed TIG


Power Source: ‎ac_dc


Included Components: ‎TIG Welder


Batteries Included?: ‎No


Batteries Required?: ‎No


Date First Available: November 21, 2023


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Friday, Jul 11

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
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  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


  • The most impressive machine at its price point!
Style: 250A AC/DC Pulsed TIG
Sunstac did it again! Let me start this review by saying I’ve been welding for 20 years now professionally and I’ve got to say I’ve never been more impressed by a company that can put out machines like this at this price point. Quick backstory, I bought the 5-1 MiG tig plasma machine a few months ago from sunstac and was honestly hoping it would last one job to get me through it. Fear not, it’s paid for itself 100 times already. My only kicker with it is it didn’t do ac tig. I was so impressed with the other unit (that I’m still using everyday) that I had to get a matching ac tig machine and I’m glad I did. This little machine pumps some amperage out. It will weld 1/4 aluminum no questions asked (220v). I run both of my sunstacs off of my miller trailblazer which has a 10k generator built into it (50amp output). If you’re wondering if a 10k generator will run this machine the answer is yes, I absolutely can confirm that it will do its job with a 50amp 220 output generator that producing 10k watts or greater. Pros- -for its price point it’s fairly adjustable - light weight and mobile - build quality is quite good, I’ve taken it apart to check if everything was secured and tight inside and everything was great. -35-50 dinse connectors make everything quick and easy to break down and put together. - versatile settings ac/dc tig with pulse and spot weld feature Cons- - the ground cable is on the shorter side, this doesn’t effect me since I am equipped with my own leads but keep that in mind if you’re planning on doing work far away from the machine. - the torch does get quite hot rather quickly when welding heavier material. This is completely normal for an air cooled setup but does need to be mentioned for people that may not have as much experience. I am planning on retro fitting a water cooler to the machine which after taking it apart will be extremely easy to do. Keep this in mind if you’re planning on welding heavy material for a longer period of time. Though I have not been able to make the machine trip into thermal protection even welding thicker material, it does get quite uncomfortable. Summary If I could give this machine more stars I absolutely would at this price point and how efficient it is the home hobbyist will absolutely not be disappointed at all. I use this thing to make money and thus far is been a great addition to my equipment. Bravo sunstac hats off to you for making a great machine. I love it so much I might buy another one just to have a back up machine. ... show more
Reviewed in the United States on May 24, 2025 by Ken Wantrobski Ken Wantrobski

  • Nice Machine works great
Style: 250A AC/DC Pulsed TIG
Worked better than expected. I did order the pedal for it and used my CK worldwide super flex torch instead of the one that came with the machine. I really like the control panel ,it is easy to use. I only tested the machine on the 120v setting but it welded very well on both AC and DC settings. I haven't used it enough to determine durability yet. So far very pleased. ... show more
Reviewed in the United States on May 19, 2025 by john crabtree john crabtree

  • Awesome AC/DC Machine
Style: 250A AC/DC Pulsed TIG
This welding machine performs great compared to some of the name brand competitors. The amount of welding amperage and capacity the machine produces is well worth the cost.
Reviewed in the United States on May 9, 2025 by Curry Fabrication

  • Highly recommend getting this machine
Style: 250A AC/DC Pulsed TIG
Overall awesome machine kinda would like more stick settings but I will still buy this machine again and I highly recommend this machine
Reviewed in the United States on September 28, 2024 by Mikel Turner

  • Great welder
Style: 200A Pulsed TIG Welder
Love it. Work as it should.
Reviewed in the United States on May 23, 2025 by Coco

  • High hopes but failed miserably..
Style: 250A AC/DC Pulsed TIG
After getting the machine and all the consumables I needed I finally got a chance to try it. After ready the manual to setup the machine, I tried my first test and it wasn’t good. The power adapter (110) started to smoke and melt. I immediately shut the machine off after o prevent a fire. I will not be trying it again. Hopefully I can return it for a refund. Disappointed ... show more
Reviewed in the United States on June 16, 2024 by Willie Willie

  • So far so good.
Style: 250A AC/DC Pulsed TIG
not really a fan of the button, wish it came with the pedal to seal the deal.. torch does flex which is a plus, make sure you don't flex it cold tho, warm it up with a pass or two to flex it with minimal wear to the torch internals. . . pulse works good for me. have not tried ac yet but glad it has ac balance and ac pulse. I got 3 sunstacs, this one, the mig 200 which i use almost daily, and the plasma cut 50 which i cant find tips for, ipt40 tips i ordered dont fit. might just upgrade the whole torch.. if sunstac sold their own tips for plasma id buy them. but yea. the yeswelder tips are expensive and may or may not fit at this point. Over all satisfied with Sunstac as an alternative entry to mid level machine for diy/small business jobs. ... show more
Reviewed in the United States on February 21, 2025 by Silver_Wave_Sales

  • it will do its job
Style: 250A AC/DC Pulsed TIG
this welder works like it should. i use a foot pedal instead of the button on the tig torch. i would highly recommend this to others that are looking to be able to weld aluminum.
Reviewed in the United States on April 12, 2025 by Kindle Customer

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