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  • Lincoln K5126-1 Square Wave TIG 200 TIG Welder
  • Lincoln K5126-1 Square Wave TIG 200 TIG Welder

Lincoln K5126-1 Square Wave TIG 200 TIG Welder

$ 2,399.00


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Lincoln K5126-1 Square Wave TIG 200 TIG Welder


This product is eligible for Lincoln Electric's Buy Red Save Green Rebate from now until September 30th, 2023. To learn more about this promotion click here.


The Square Wave® TIG 200 is a portable TIG and stick welding machine that lets hobbyists, makers, small fabricators and craftsmen explore their creativity.

It is designed to help expand your welding expertise. As your skills and confidence grow, you can take advantage of the Square Wave TIG 200’s additional functionality. No matter your skill level, you won’t be disappointed.

The Square Wave TIG 200 provides smooth and stable AC TIG welding on aluminum and DC TIG welding on steel, stainless steel and chrome-moly.

A user-friendly interface enables the operators to set it, forget it and weld.

Input Power

  • 120/230/1/50/60



  • AC/DC TIG, Stick





The user interface makes machines setup easy. Available features, such as Pulse, which provides a drumbeat-like rhythm for filler metal deposition, make you become a better TIG welder - faster. 



  • For a wider or tighter bead, users can easily adjust AC Frequency Control
  • AC Balance can be adjusted to provide more cleaning action on dirty aluminum or to maximize penetration on thick materials



  • The multi-process machine can TIG weld when precision and bead appearance are important
  • Users also have the advantage of stick welding capability for outdoor work on thicker materials



  • Plug in the Square Wave TIG 200 where you need it 
  • A standard 120V circuit or 230V for maximum output
  • Portable and convenient to use, only 46 lb (21 kg)



INPUT POWER 120/230/1/50/60

TIG: 125A/25% (AC TIG 110A/25%)
TIG: 100A/40%
TIG: 85A/60%
Stick: 75A/20%
Stick: 65A/60%

TIG: 200A/25%
TIG: 160A/40%
TIG: 130A/60%
Stick: 170A/20%
Stick: 100A/60%


TIG: 25% Duty Cycle 21A
TIG: 40% Duty Cycle 17A
TIG: 60% Duty Cycle 14A
Stick: 20% Duty Cycle 19A
Stick: 60% Duty Cycle 16A

TIG: 25% Duty Cycle 22A
TIG: 40% Duty Cycle 17A
TIG: 60% Duty Cycle 13A

TIG: 10-125A
Stick: 10-90A

TIG: 10-200A
Stick: 10-170A
DIMENSIONS (H X W X D) 14" x 10.75" x 19.25" (358 x 282 x 502 mm)
NET WEIGHT 46.50 lb (21.09 kg)



  • PTA-17 TIG Torch Ready-Pak®
  • Foot Amptrol™ 
  • Gas Regulator/Flowmeter and 10 ft. (3 m) Gas Hose Kit
  • 200A Stick Electrode Holder
  • Ground Clamp and Cable
  • 120 and 230V Input Cords


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Every Welder Has To Start Somewhere

While it’s true that some people are just natural prodigies that can take up a new skill with relative ease, for the rest of us, learning something new is about putting in the time and practice. You have to familiarize yourself with the tools and the basic operating concepts behind a new discipline. Then you have to try it for yourself, make your mistakes, understand why you made those mistakes and gradually learn not to make them again.
This is absolutely true of the art of welding. Few people will be able to pick up a welding torch for the very first time and get to work competently—let alone safely—on pieces of steel or chrome-moly and start welding them together or cutting them. For people that want to start small, but learn the right way to weld, Lincoln has a great TIG solution.

The Lincoln Promise of Reliability

For more than a century, Lincoln Electric has been a valuable partner to the American heavy industry. They’ve worked with the planners and companies on working out achievable goals, but they’ve also been on “the ground floor” with the skilled tradesmen, finding out what they need in order to do a good job, in good time and with maximum safety.
That commitment to quality and safety continues today with newer, faster, more powerful equipment that is both lower in cost and accessible to those who need it. It’s not just professionals that get the most from Lincoln Electric products, but professionals in training, or hobbyists that want to get the most from their work with tools that are affordable, like the Lincoln K5126-1 Square Wave TIG 200 TIG Welder.

For Experts & Newbies

The Lincoln K5126-1 Square Wave TIG 200 TIG Welder is both an entry level and professional machine that is designed to grow with people learning more about welding, or give experienced pros the tool they need for smaller jobs, or personal work in the shop or home. The welder has an easy to use and understand interface, even for beginners, and comes with a suite of very handy features for beginners, such as a pulse feature that creates a rhythm to help beginners to learn the proper techniques for welding.
The Lincoln Square Wave TIG 200 is also portable and adjustable. It works on both 120V and 230V if you need more power, but also weighs just 46 lb if you need to move it other locations for your work needs. This is a great welder for people that are looking to work on aluminum, chrome-moly, steel and stainless steel. It’s the welder that grows with you as you get better.

Good Prices, Timely Shipping

If you’ve decided that the Lincoln K5126-1 Square Wave TIG 200 TIG Welder is a good acquisition, we can ship it to any door in the continental USA. The waiting time will be short, and it will arrive in excellent condition thanks to our alliances with trusted, experienced shipping partners. You won’t need to pay additional fees for shipping and handling either. We’ll pay for that ourselves as our way of showing you how much we appreciate your decision to support an honest American business.


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