ROHR SMINI-120NI ARC – MMA 120amp Inverter Welder


Advanced dual MMA & ARC welder from Röhr, destroys expectations with extensive engineering. This portable welder has the latest inverter technology.

100 in stock (can be backordered)

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Free UK Delivery

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

When it comes to designing and manufacturing welders, Röhr have extensive, unparalleled knowledge. They combine breakthrough technologies to produce some of the most advanced and capable welding machines on the market.

Röhr welders are easy to use and perfectly suited to experienced and new users alike. You can carry out a huge range of welding including vehicle’s, fabrication, house maintenance or more unconventional work where specialist materials require more advanced features. Whether it’s aluminium bike frames or a revived passion for steel sculpture, there’s a Röhr for the job and a Röhr for you!


  • Voltage: 1 Phase AC 240V ±15%
  • Frequency: 50/60HZ
  • Output Current: 20-120A
  • Rated Input Voltage: 24.8V
  • Duty Cycle: 45%
  • Power Factor: 0.73
  • Insulation Grade: F
  • Housing Protection: IP21

In The Box

  • 1 x Welder
  • 1 x MMA Clamp
  • 1 x Earth Clamp
  • 1 x Strap
  • 1 x Brush
  • 1 x Instruction Manual

The Latest IGBT Technology

IGBT is a bipolar transistor with an insulated gate electrode. This semi-conducting device is being increasingly used in power electronics because it combines the advantages of two transistor types: the easy controls of the field effect transistor and the fast switching and high breakdown voltage of the bipolar transistor. The IGBT also offers some robustness against short circuits because it limits the electrical continuity.

Featuring Hot Start

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.


This function helps to prevent overheating of the electrode by switching off the welding current when the electrode sticks to the material.

MMA Arc Welding

MMA is electrode welding with a coated electrode.


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