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Unimig KUMJRRW250MIG Razorweld 250 MIG MMA & TIG Inverter Welder Kit

by Unimig
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Estimated Dispatch Time: 3-10 days

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The Razorweld 250 is the ideal machine for light to medium industrial fabrication work . The machine is single phase 240V and also portable and perfect for site work. The MIG function provides superb arc characteristics when using either Gas Shielded or Gasless Wires. The machine features an adjustable Burnback control and easy to use panel layout to get your job done faster. 

The machine is also a very capable MMA (Stick) welder capable of running most MMA Electrodes up to 4.0mm. An added feature of Hot Start helps when striking an Arc to minimise the Electrode sticking to the work piece. 

With the machine being Spool Gun ready a UNIMIG Spool Gun is available if you want to run Aluminium wire without the changeover in the torch, liner and drive roller. The Spool Gun is an ideal way to use softer wires and not have to purchase larger spools of wire for small jobs. 

The Razorweld 250 is also a DC TIG welder with Lift Arc function. DC TIG will allow welding of materials such as Mild and Stainless Steels as well as Bronze, Copper and Chrome Moly’s.


  • Latest IGBT inverter technology
  • MIG/MAG with Gas and Gasless wire function
  • MMA
  • DC TIG welding with Lift Arc Start
  • Digital Amp – Volt Meters
  • Industrial application
  • Solid metal case construction
  • Internal wire feeder, gear driven
  • 15Kg Spools
  • VRD (Voltage Reduction Device)
  • Euro style MIG torch connection
  • IP21S rating for environmental / safety protection
  • Tolerant to variable power supply
  • Stepless voltage and wire feed control
  • Variable inductance control
  • Excellent MIG welding with CO2 gas & mixed gas
  • Excellent arc stability
  • Spool Gun Connection


  • Part Number: KUMJRRW250
  • Primary Input Voltage: 240V 1 Phase
  • Rated Input Power KVA: 11.0 KVA
  • ieff AMP: 28.0A MIG
  • Rated Output MIG: 30A/15.5V - 250A/26.5V
  • Rated Output TIG: 15A/10.6V - 250A/20.0V
  • Rated Output MMA: 15A/20.6V - 250A/30.0V
  • Welding Current Range: 15 - 250 Amps
  • Duty Cycle 40 Deg C - MIG / TIG/ MMA: 30% @ 250 Amps
  • Dimensions (mm): 628 x 267 x 453
  • Weight (Kgs): 30


  • 1 x Razor MIG 250 Power Source
  • 1 x 4 metre SB24 MIG Torch
  • 1 x 4 metre Arc Welding lead set including twist lock electrode holder & 300 Amp earth clamp
  • 1 x UNIMIG Twin Gauge Argon Regulator
  • 1 x 2 metre Gas Hose with connections
  • 1 x Instruction Manual

Bonus Itmes:

  • 220 AMP Spool Gun (PLSP240A)
  • 0.9mm 5356 Aluminium MIG Wire 0.5kg (AM5356-0.9MM-0.50KG)
  • Consumable Starter Kit (UMSK24)

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