Röhr MAG & MIG Welder – “3 in 1” Gas/Gasless MIG-250MI-11


(10 reviews)

The easy to set up 240v MAG & MIG Welder from Röhr, is ideal for novice and experienced welders alike. 

As a multi purpose welder you can use this unit for welding magnesium, copper, steel & most of it’s alloys.

The unit boasts an impressive gas/gasless feature as well as providing you with a stable wire speed and low power consumption.

It features a whole host of accessories and a carry bag to make transport a breeze!

Whether it’s aluminium bike frames or reviving your passion for steel sculpture, there’s a Röhr for the job and a Röhr for you!

355 in stock

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Free UK Delivery

To Mainland UK. Same day dispatch on orders placed before 14:00 GMT. Full Shipping Terms.

1 Year Warranty

All Röhr welders come with a 1 year automatic warranty.

When it comes to designing and manufacturing welders, Röhr have extensive, unparalleled knowledge.

Röhr’s warranty is their dedication to quality.

Have a question? Contact our friendly customer service team here


This welder can be used for both MMA Arc welding or MIG / MAG welding, allowing you to carry out a huge range of welding tasks including: 

Vehicular welding, fabrication, house maintenance, or more unconventional work!

Exceed your Expectations

Röhr ensure reliability in all of their welders, using the latest inverter technology their welders are built to last. Regardless of usage.

Inverter welders dramatically reduce the power required to weld, increasing efficiency by 30% and producing a consistent power supply.

This gives you the most stable welding arc, not only that IGBT monotubing significantly increases efficiency compared to normal MOS tubing.

Perfect for a Wide Variety of Welding

This unit is perfect for controlling electric short transition and blending transition

This provides stable wire speed, low power consumption and no electromagnetic noise. This welder is multi-use so you can weld low-carbon steel, stainless steel and alloys.

Dual “2-in-1” Portable Functionality

The Röhr MIG-250MI can be used for MMA Arc welding or MIG / MAG welding and it’s highly portable due to it’s lightweight design. The unit produces neat welds that leave you in no doubt that this high quality welder is designed by Röhr.


  • Frequency (HZ): 50/60
  • Power Voltage (V): Single Phase AC 240V±15%
  • Input Current (A): 21
  • Output Current (A): 5-250
  • Duty Cycle (%): 60
  • No-Load Voltage (V): 56
  • Efficiency (%): 85
  • Power Factor: 0.93
  • AC Pulse Duty (%): 20-80
  • Arc Current (A): 5-200
  • Insulation Grade: H
  • Housing Protection Grade: IP21

In The Box

  • 1 x Welder Unit
  • 1 x Stick-Weld Armature
  • 1 x TIG-Weld Armature
  • 1 x Earthing Clamp
  • 1 x Welding Mask & Glass
  • 1 x Cleaning Brush
  • 1 x 3x Ceramic Cups, 2x Brass Collets, 1x Blue Collar
  • 1 x Black Gun Cap
  • 1 x Accessory Bag
  • 1 x User Manual

MIG / MAG Welding

MIG is used for welding materials such as magnesium, copper and other non-ferrous materials and their alloys. MAG on the other hand, is suitable for steel, structural steel and most of its alloys. Thus, great welding seams can be briskly and efficiently manufactured with different thicknesses, ensuring that material distortion is kept to a minimum.

Röhr MAG & MIG Welder - "3 in 1" Gas/Gasless MIG-250MI-11

Vari-gas Flow

MIG/MAG welding require a protective gas. Inert gases, such as argon and helium, as well as active gases (for example carbon dioxide) and other mixtures can be used. The solenoid valve regulates the flow of gas. The valve is operated via a button on the torch.

Featuring ARC Force and Hot Start

With ARC Force, the current increases automatically when the arc is shorter. Hot Start automatically boosts the tension at the ignition of the arc, this function facilitates the electrical arc ignition. After ignition, the unit automatically returns to the pre-set voltage.

Shipping Information

Shipping – Fast & Free

We offer free shipping mainland UK (excluding Highlands/Grampians), on all orders under 70kg weight.

Your postage will be calculated when you enter your postcode at the checkout.

We use a variety of reliable 24-hour courier services on all of our machines – the courier depends on weight and locations. Parts & accessories are sent with Hermes Tracked Delivery.

Orders placed before 2pm on a weekday are dispatched the same working day.

Choosing a Welder

Choosing the Correct Welder

Choosing the correct welding machine can be a daunting process. Our handy guide below explains some of the
terminology and different types of welders that we stock. This will help you to select the correct product that will be
fit for purpose for your specific welding tasks.



Traditional welding technique using a flux core. Simpler than other kinds of welding and quick to learn.

Suitable For:

  • Steels (non-Alloy)
  • Iron
  • Can be used for Aluminium, Copper etc



Uses an inert gas shroud around a continuously-fed reel filament to melt and join surfaces. Faster than TIG, suitable for most welding applications

Suitable For:

  • Aluminium
  • Steel/Stainless
  • Most welding applications



Uses a tungsten filament rod with inert gas shroud to melt and join surfaces. Produces a strong and higher quality weld than MIG.

Suitable For:

  • Stainless Steel
  • Thinner Metals
  • Fine Joinery



Reacts with the weld to produce less spatter or burn-in.

Suitable For:

  • Stainless Steel
  • High Strength Joins
  • Aluminium & Other Steels



Most recent technology using capacitors. Stores high voltages for steady release

Suitable For:

  • Multi Purpose TIG/MIG
  • Micor Controlled Current
  • Highly Efficient

Customer Reviews

10 reviews for Röhr MAG & MIG Welder – “3 in 1” Gas/Gasless MIG-250MI-11

  1. David Brown

    Excellent welder. Worked virtually straight out of the box. Very easy to set up. I used fluxcore wire and it laid down an excellent bead. Not tried the MMA (stick) welding yet, but imagine it will be as good or better than the MIG. All in all, very pleased with it and will definately recommend this nice piece of kit 🙂

  2. Tim (verified owner)

    Switched to this from an old Stick Welder, great machine as far as i’m concerned. 

    The difference between my old machine and this on MMA is dramatic, its very smooth, much easier to use.

    Mig – easy to use, simple to set up.

    Really pleased with it.

  3. Ian hazzard

    Just bought mig. 250-11 used today for first time tried gas, gasless and arc, all worked well. Very pleased with this unit very good quality. Excellent service from Union Mart.

  4. Steve

    What better could you ask for at this cost .
    Does what it says . Easy setup . Ideal for beginners or home back up kit . Good power nice weld !

  5. G Harris

    It took me a while to decide which machine to purchase,i really am glad i choose the RHOR 250 Mi so my advice to experienced or novice welders your next welder should be this one,also the help from the union mart team where second to none,thank you again for an outstanding service.

  6. David Payne

    I have debated for years about replacing my mig and separate stick welders for one machine. Finally decided on this machine. Absolutely brilliant. very easy to use. Light to move about. And a very good price.

  7. Robert Woods

    Fast delivery. Seems to be well made, eg metal tensioner. I have only mig welded with gas until now but have no gas at the moment so have been using gas less with reasonable results and I can’t blame the machine for this. 
    Overall I am very pleased with the machine and would certainly recommend it to others. 

  8. Dr Haykey

    Excellent quality Welder, the torch feels good and sturdy and the ground clamp is so much better quality than the “croc clips” other manufacturers supply.  Ran out of Gas so using Flux core wire for a couple of weeks. Good welds and easy to set up. One of the best MIG machines I have tried at this price range. Highly recommended.

  9. Nathan Jones

    Just had my new elder delivered, it looks and works great only had a quick test but first impression are it will be my go to welder with the tig just coming out for the one off jobs. Delivery was next day and the packing was very good.

  10. Mike Knapman

    Just bought a MIG-250-11 welder. It was delivered next day. Not tried it yet but it looks very robust and the torch and cable are more “industrial” quality than other “hobby” MIG welders I have bought. Looking forward to trying out this welder on some 6mm steel plate very soon.

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