Thunderbolt® XL 225 Stick Welder | Miller - MillerWelds

Thunderbolt® XL 225 AC Stick Welder

Economical Stick machine with 225 AC amps of output.


What's Included

  • Thunderbolt XL AC
  • 15-ft. (4.5 m) No. 4 electrode cable with heavy-duty electrode holder
  • 10-ft. (3 m) work cable with clamp
  • Power cord with 240V plug
Precise Amperage Adjustment
Unlike other economical stick machines on the market with their fixed amperage settings, the Thunderbolt® uses Miller’s Accu-Set™ amperage dial which gives you infinite adjustment of amperage within the range of the machine.
Just Add Your Favorite Stick Electrodes and You're Ready to Weld
The Thunderbolt comes equipped with a heavy duty electrode holder and the power cord with plug already attached.  All you need to do is grab your favorite stick electrodes and you're ready to start welding.
Infinite Voltage Control
Adjust output by as little as one-amp increments. Get the exact heat you need.
Output Selector Switch
Quickly select low or high range without adjusting the output leads.


Product Literature

AC/2.0 Thunderbolt XL AC - Spanish



Stick (SMAW)

General Specifications

Title Thunderbolt® XL 225 AC Stick Welder
Industries Interests DIY / Home Hobbyist
Farm and Ranch
Metal Art / Sculptures
Racing / Customizing / Restoring
Education / Training
Maintenance and Repair - In Plant
Weldable Metals Steel
Stainless Steel
Input Voltage 220/230/240 V
Input Phase 1-Phase
Input Hz 50 / 60 Hz
Current Type AC
Rated Output 225 A at 25 VAC, 20% Duty Cycle
Amperage Range 30 AC - 235 AC
Net Width 12.75 in
Net Height 18.75 in
Net Length 17.5 in
Net Weight 85 lbs
Warranty Miller's True Blue Warranty
Portability Running Gear / Cart (Optional)
Weld Output CC

Reviews & Ratings

Rated 5 out of 5 by from Years of welding I bought my thunderblot in 1981 Years of welding I bought my thunderblot in 1981 I have been working with it for 34 years and some stolen it from me so now I need a new, just now I am not sure what to buy I got mine in college were I learn to weld stick, might and tig.
Date published: 2015-07-16
Rated 5 out of 5 by from Best Price I've Found and An Excellent Machine If you are researching a Miller, then you probably already know it is a top of the line welder. I knew I wanted to go with a Miller, the only question was which kind? I'm an oilfield mechanic and from time to time do some work related welding, but I am by no means a professional welder. I work for a major oil company, and our platform uses a Miller, by the way. Anyways, I went with the Thunderbolt AC because it was much cheaper than the Thunderbolt AC/DC and also because I wanted to "master" AC stick welding. DC stick welding is much easier, so with me being able to weld AC at home, DC at work will be "simple". That's why I went with this machine and the price is why I bought it at this website.
Date published: 2015-03-08
Rated 5 out of 5 by from I have nothing bad to say about this welder Been using this welder going on 7 years for most of my work on my truck, tractor loader and misc projects in my shop.
Date published: 2014-03-24
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