Thunderbolt® XL 225/150 AC/DC Stick Welder | Miller - MillerWelds

Thunderbolt® XL 225/150 AC/DC Stick Welder

Economical Stick machine with 225 AC amps and 150 DC amps of output.


What's Included

  • Thunderbolt XL AC/DC
  • 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 240 V 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 Current Control
Adjust output by as little as one-amp increments. Get the exact heat you need.
High DC Weld Output
Up to 150 amps available at 20 percent duty cycle.
Output Selector Switch
Quickly select AC, DCEP or DCEN without adjusting the output leads.



Stick (SMAW)

General Specifications

Title Thunderbolt® XL 225/150 AC/DC Stick Welder
Industries Interests Racing / Customizing / Restoring
DIY / Home Hobbyist
Farm and Ranch
Metal Art / Sculptures
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 / DC
Rated Output AC: 225 A at 25 V at 20% Duty Cycle; DC: 150 A at 25 V at 20% Duty Cycle
Amperage Range 30 DC - 160 DC
30 AC - 235 AC
Net Width 12.75 in
Net Height 18.75 in
Net Length 17.5 in
Net Weight 104 lbs
Warranty Miller's True Blue Warranty
Portability Running Gear / Cart (Optional)
Weld Output CC

Reviews & Ratings

Rated 5 out of 5 by from Great little welding machine I've welded for 40 years in fab shops & shipyards, the maintenance guys at work keep one of these little welders in the tool room for repairs. So, I've had a chance to weld with them before. The first thing I did when I retired was buy a Thunderbolt, and that's been about five years ago. And its still running great, the best cracker box you can buy.
Date published: 2016-03-10
Rated 5 out of 5 by from Great For my small shop Use it for repairs and it never misses a beat. two thumbs up
Date published: 2016-02-11
Rated 5 out of 5 by from Great litttle welder I have only had this welder for about 3 months but I've used it a lot and I couldn't be happier with it. I used it to build a welding table, vise stand, grinder stand and a small trailer so far. An excellent welder at a reasonable price.
Date published: 2015-11-22
Rated 5 out of 5 by from Can't be beat! No better stick machine available at this price point! Smooth buttery arc but still plays well with 60xx series electrodes. I've had mine for 5 years now and have put it through the paces and it welds better now than the day I brought it home. It can even handle 3/16 sticks without blinking. Love my lil thunderbolt.
Date published: 2015-10-18
Rated 5 out of 5 by from Great simple small stick welder I ran this thing way over the duty cycle. I would use this thing for 2 or 3 hours 3 or 4 times a weeks for over 3 years straight. I'm sure it still works great. I just don't use it much as I bought a dynasty. Some times in one sitting I would weld maybe 7 or 8 pounds of 1/8 7018 rod. The Thunderbolt would grone and whine but always continued to weld. At one point I hooked up a TIG torch and scratch start tig welded with this thing.
Date published: 2015-08-04
Rated 5 out of 5 by from Very durable machine. Great little machine, we've had ours now for 9 years using it on heavy equipment repair and after hours of abuse it keeps going. My Miller rep. doesn't like hearing this but we've even used for gouging with 3/16" rods in short stretches.
Date published: 2014-12-27
Rated 5 out of 5 by from Awesome welder This machine is a beast. Well worth it for the price. Have had this welder for 3 years. Still works flawlessly. I would definitely recommend this welder to anyone for their shop would be a good add on to their business.
Date published: 2014-04-13
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