Kemppi Kempact 251R Inverter MIG Welder


The Kempact 251R is a 240v single phase inverter MIG which serves the wide ranging needs of metal fabrication workshops. The R panel provides manual setting of voltage and wire speed with arc dynamics also changeable with two manual modes. Delivery specification includes welding gun and earth return lead pack.

Designed for the modern welding workshop, Kempact RA expresses stylish and purposeful design through high build quality and functional user benefits, making weld tasks productive, accurate and efficient.

Kempact RA is built on Kemppi’s latest power source platform, ensuring optimal welding performance and excellent power cost efficiency.

New technology features include reduced energy costs of more than 10% when compared to conventional step controlled power sources, “Brights” cabinet lighting for easy wire loading in low light conditions, “WireLine” service alert function that signals routine wire-path maintenance needs, plus the integrated “GasMate” chassis design, making gas cylinder loading and machine movement easy and safe. Whichever model you select, Kempact RA ensures you get the most from every welding task.

Available on backorder


  • 251R Power Sourse
  • GX253 – 3.5mt MIG Gun
  • Earth Lead – 5mt
  • Drive Roller Kit (Please specify in comments when ordering)
  • Argon Regulator

Drive Roller Kits Available suits: RA 181A/251R/251A 

  • F000333 – 0.6 V-Groove (SS/FE)
  • F000236 – 0.8/0.9 V-Groove (SS/FE)
  • F000237 – 1.0 V-Groove (SS/FE)
  • F000238 – 1.2 V-Groove (SS/FE)
  • F000241 – 1.0 U-Groove (AL)
  • F000242 – 1.2 U-Groove (AL)
  • F000239 – 1.0 Knurled (FC)
  • F000240 – 1.2 Knurled (FC)

• Modern, energy efficient power source
• Excellent welding performance with mixed or C02 shielding gas
• Precise, clean arc ignition
• Maximum output at 35 % duty cycle
• Large, clear LCD display
• WireLine™ service indicator
• GasMate™ chassis design featuring floor level cylinder loading
• Brights™ cabinet lighting
• HotSpot™ heat treatment function
• 2T/4T gun switch latching
• Spot and cycle arc timer
• Parts storage trays
• Kemppi 3+ warranty

Product code:
Kempact 251R, GX 253 G, 3.5m – P2203GX
Kempact 251R, GX 253 G, 5m – P2204GX
Connection voltage: 1~ 50/60 Hz 240 V ±15%
Fuse (delayed): 20 A
Welding range: 10 V/20 A–29 V/250 A
Open circuit voltage: 36V
Wire feed speed adjustment: 1.0 – 18.0 m/min
Filler wire sizes (Fe solid) 0.8…1.2 mm
Filler wire sizes (Fe cored) 0.8…1.2 mm
Filler wire sizes (Ss) 0.8…1.2 mm
Filler wire sizes (Al) 1.0…1.2 mm
Operating temperature range: -20…+40 °C
External dimensions: LxWxH 623 × 579 × 1070 mm
Weight (no accessories): 44 kg
Degree of protection: IP23S
Standards: IEC 60974-1, IEC 60974-5, IEC 60974-10, IEC 61000-3-12
Weight54 kg
Dimensions58 × 74 × 111 cm


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