Unimig Razorweld 250amp MTS Inverter MIG Welder



The RAZOR250 is a new inverter-based portable MIG welding machine with added MMA and TIG function. The MIG function allows you to weld with both Gas Shielded and Gasless wire applications.

Easy stepless adjustment of voltage and wire feed make for easy setting of welding parameters giving excellent, professional welding results. Wire inch gives easy feeding of the wire during set up without gas wastage and the Burn Back adjustment leaves the wire out ready for the next weld. MMA welding capability delivers easy electrode welding with high quality results, including cast Iron, stainless and low hydrogen. Connection of the 26V TIG torch provides quality DC TIG with Lift Arc start for welding of steel, stainless steel and copper. An additional feature is the Spoolgun ready function that  allows the simple connection of the PLSP240Amp Spoolgun for the use of thin or softer wires that don’t have the column strength to feed through standard MIG torches, such as aluminium wire. This an industrial machine that is lightweight and portable, an optional trolley with tool drawer and cylinder rack provides off the floor operation and better manoeuvrability around the workshop.  Being 240v single phase gives great portability. Ideal for general engineers, maintenance workshop and rural workshop. Designed and built to our specification. Certified to – AS/NZ60974-1

Key Features

Latest IGBT inverter technology

MIG/MAG with Gas and Gasless wire function


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

Available on backorder


  • 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

Weight30 kg
Dimensions78 × 42 × 50 cm


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