Razorweld 250 MTS


Razorweld 250 MIG L
Razorweld 250 MIG R
Razorweld 250 MIG Front
Razorweld 250 MIG KIT
Razorweld 250 MIG L
Razorweld 250 MIG R
Razorweld 250 MIG Front
Razorweld 250 MIG KIT

Razorweld 250 MTS

Available in stock


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

Quick Overview



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. 

*Always refer to the recommended polarity setup as stated on the electrode packaging.




Voltage Reduction Device (VRD) is a safety feature when operating in MMA/Stick mode.
VRD reduces the maximum unloaded open circuit voltage across the output terminals.

This makes the machine safer to use and is an industry standard in the welding industry.


UNIMIG is pleased to offer a 3 year warranty on all Razorweld machine’s*.
UNIMIG offers warranty across Australia with four UNIMIG service centre’s in Sydney, Melbourne, Brisbane & Perth. We also have authorised service centres across Australia as well.UNIMIG’s focus is to assure the buyer is getting reliability, performance and peace of mind with a quality product.

UNIMIG also offers an additional 6 months warranty free of charge when you register your product online via the UNIMIG website.

*Please note warranty only applies to the power source only

KUMJRRW250_kit new


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

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  • Part NumberKUMJRRW250
  • Primary Input Voltage240V 1 Phase
  • Rated Input Power KVA11.0 KVA
  • ieff AMP28.0A MIG
  • Rated Output MIG30A/15.5V - 250A/26.5V
  • Rated Output TIG15A/10.6V - 250A/20.0V
  • Rated Output MMA15A/20.6V - 250A/30.0V
  • Welding Current Range15 - 250 Amps
  • Duty Cycle 40 Deg C - MIG / TIG/ MMA30% @ 250 Amps
  • Dimensions (mm)628 x 267 x 453
  • Weight (Kgs)30

Optional extras & accessories