UNIMIG 350 MIG / TIG / MMA Compact


350 3QTR
350 Front
350 3QTR-ALT
350 3QTR
350 Front
350 3QTR-ALT

UNIMIG 350 MIG / TIG / MMA Compact

Available in stock


The UNIMIG 350K is an inverter-based multifunction 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. An additional feature is the Spoolgun ready function that  allows the simple connection of the PLSP240 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. Added MMA welding capability delivers easy and high quality welding using electrodes, 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. The machine is industrial rated and of solid construction, large industrial wheels allows easy and smooth manoeuvrability. Ideal for general engineers, maintenance workshop, rural workshop and tafe colleges. 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 4 roll geared wire feeder
5Kg to 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
Excellent MIG welding with CO2 gas & mixed gas
Variable Inductance control
Excellent arc stability
Spool Gun Connection

Quick Overview

Part No: KUMJR350K-SG


The UNIMIG 350K is the ideal machine for medium to heavy industrial work. The machine is three phase 415V and also portable and perfect for workshop use. 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 UNIMIG 350K 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.




The machine features a geared roller drive unit, for consistent smooth wire feed, this assists with using longer MIG Torches.



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

350 Warranty

Package Contents

1 x UNIMIG Compact 350 Power Source

1 x 4 metre SB36 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

Ready to buy? Find a LOCAL dealer



  • Part NumberKUMJR350K-SG
  • Primary Input Voltage415V 3 Phase
  • Rated Input Power KVA13.9 KVA MIG / 15.0 KVA MMA
  • ieff AMPS12.3A MIG / 13.2A MMA
  • Rated Output MIG40A - 350A
  • Rated Output MMA20A - 350A
  • Welding Current Range20 - 350 Amps
  • Duty Cycle 40 Deg C - MIG40% @ 350 Amps
  • Duty Cycle 40 Deg C - MMA35% @ 250 Amps
  • Dimensions (mm)900 x 400 x 670mm
  • Weight Power Source (Kgs)60

Optional extras & accessories