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UniMig Razor 250 MTS MIG TIG MMA 3 in 1 Inverter Welder (KUMJRRW250)

Availability: Out of stock

RRP $1,578.38


Quick Overview
250amp MIG-TIG-MMA Inverter Welder
Buy as a bundle

Product Details

Key information:

See specifications for full details
Warranty3 Years
Max Output250amps
ProcessesMIG, Stick, Lift Arc TIG
WeldsSteel, Stainless, Cast Iron, Aluminium
Plug TypeOptional 1-phase (15A, 20A, 32A)
Weight (approx)30kg
Approx Weld Capacity Steel12mm
Input Power240v-Single Phase
Current DC (Direct Current)


The Razor 250 MTS is the newest addition to the brand’s flagship Razorweld stable, and features several improvements on its 250amp predecessor (KUMJR250).

The Razor 250 features Jasic’s ever improving and more refined IGBT Inverter technology and is capable of DC MIG, TIG and STick welding.

In MIG, the new Wire Inch Feature ensure easy adjustment of the wire during set-up without gas waste. Burnback Adjustment leaves the wire ready for the next weld. The machine is capable of high quality MIG Welds on Steel, Stainless, Cast Iron, Copper and Bronze and will run 0.8m to 1.2mm wire. THe machine is capable of welding aluminium with the addition of a Spool Gun. An SB24 MIG Torch is included with the Torch.

TIG Welding is possible with the addition of a 26V TIg Torch. The machine comes with all Stick Welding accessories.

This is an industrial powered single-phase machine and weight just 30KG.


  • Razor Arc 250 MTS Power Source

  • SB24 MIG Torch

  • LS35 4m Arc Welding Lead and Clamp Set

  • 2m Gas Hose

  • Argon Flowmeter Regulator


  • Wire Inch

  • Burn Back

  • Stepless Voltage Control

  • Lift Arc TIG

  • Incredibly Stable Wire Feed in MIG

  • Spool Gun Ready

  • AS/NZ60974-1 Certifield


  • Steel, Stainless, Cast Iron, Aluminium, Cast Iron, Copper


Part NumberKUMJRRW250
Primary Input Voltage240v-1-Phase
Welding Current MIG30A/15.5V - 250A/26.5V
Welding Current MMA15A/20.6V ~250A/20V
Duty Cycle 40C MIG30% @ 250amps
Duty Cycle 40C MMA30% @250amps
Welding Voltage Range DC: 15.5V-26.5V
Wire Spool Size15kg
Wire Size0.6mm-1.2mm
Dimensions628mm x 267mm x 453mm


Additional Information

Weight 30.0000
Product Manual KUMJRRW250.pdf
Product Brochure KUMJRRW250.pdf
Unit Type Unit Type
Amperage No
product_type No
Suitable For No
Bar No
Flow Rate Control (FRC) No
Frimin No
Float No
Horse Power No
Kilowatts No
Pounds / Square Inch (PSA) No
Powered No
Taps No
Volts No
Type No
Draw Off No
Watts No
Litres No
Casin Material No
Max Flow LMNI No
Particle Size No
Use No
Approval No
Flow Control No
Max Flow L/Hr No
Plumbing No
Lid No
Diameter No
Style No
Width No
Size Range No
Mount No
Part Number No
Primary Input Voltage No
Welding Current No
Voltage Steps No
Duty Cycle 40 Deg C No
Welding Voltage Range DC No
Overload Protection No
Reverse Polarity No
Wire Spool Size (kg) No
Wire Size (mm) No
Dimensions (mm) No
Weight (kg) Weight (kg)
Input Power 240v-Single Phase
Warranty Stamps
Embed Code No
Embed Code No
Embed Code No
Embed Code No
Embed Code No
Item Height No
Item Width No
Item Length No
Item Weight No
Item Height No
Item Width No
Item Length No
Item Weight No


Great unit Review by Gregs
Pretty light for a big and powerful welder (Posted on 2/06/18)
Amazing machineReview by Mr troy
Originally had a CIG weld unit which packed up so I thought I'd try the razor units, the unit is amazing!! So much better quality unit & much Easier to adjust while using it. Best upgrade u I have done! (Posted on 16/05/18)
Good addition to the workshop.Review by Michael, Traralgon
Was able to pick this machine up in Melbourne on the day i bought it, which was great. Has been good little addition to the workshop. This machine has been handy on lighter to medium fabrication jobs. Have a three-phase unit for heavier work. (Posted on 24/02/17)

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