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UniMig 425amp Compact MIG Welder with SWF Unit (KUM425SWF)

Availability: Out of stock

RRP $4,756.76


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Quick Overview
Versatile and powerful enough for heavier fabrication work, and heavy-duty rural work.

Product Details

Key information:

See specifications for full details
Warranty2 Years
Max Output425amps
WeldsSteel, Stainless, Cast Iron, Aluminium
Plug TypeOptional 3-Phase
Weight (approx)182kg
Approx Weld Capacity Steel22mm
Input Power415v-Three Phase
Current DC (Direct Current)
The UniMig 425 Step-COntrolled MIG Welder is a powerful traditional MIG Welding Machine with a very high Duty Cycle. The machines is 50% rated at 400amps making it ideal for intensive medium and heavy fabrication, along with intensive rural applications. The machine is three-phase (415V) and comes with a full enclosed KT-50 Separate Wire Feeder and 10m Interconnecting Cables, which give it excellent portability.

The machine is known for its exceptional reliability and stable Arc characteristics. It has a four-wheel Gear Driven Wire Feeder which ensure perfect Wire Feeed and smooth welding. It is back 24 Months warranty, which can be extended to 30 months if you buy through eWelders, as we are an approved UniMIg distributor. UniMIg has service technicians located throughout Australia and offer exceptional after sales service.

• Heavy duty copper wound transformer
• Exceptional high duty cycle 50% @ 400 amps
• European made quality manufactured in Hungary
• High Duty Cycle operation 50% at 400 Amps
• 30 Voltage positions
• Triple inductance settings for optimum arc characteristics on thin or thick material
• 2T-4T trigger operation (MIG Only)
• Stich and Spot welding modes
• Adjustable Burnback control
• 3 Years Warranty
• Four wheel geared wire drive system
• Separate Wire Feeder
• 10 metre inter connecting cables
• Triple Inductance for exceptional arc control
• High strength steel construction


• UNIMIG 425 SWF MIG Welder
• KT 50 Seperate Wire Feeder complete with 10 metre interconnecting cables
• SB384M Sure Grip Ergo MIG torch with Euro connection
• 10M Earth lead with 35/50 Dinse style connections
• UNI-FLAME Twin Gauge Argon Regulator
• 2M Gas Hose Complete with fittings


Additional Information

Input Power 415v-Three Phase
Part Number KUM425SWF
Primary Input Voltage 415V 3 Phase
Welding Current 40 - 400 Amps
Stepless Yes
Voltage Steps 30
Duty Cycle 40 Deg C - MIG 50% @ 400 Amps 60% @ 360 Amps 100 % @ 300 Amps
Welding Voltage Range DC 16 - 34V
Wire Spool Size (kg) 5 & 15
Wire Size (mm) 0.6 - 1.6 Ferrous 0.6 - 1.6 Stainless Steel 0.9 - 1.6 Aluminium 0.9 - 2.4 Flux Cored
Dimensions (mm) 1270 x 940 x 600
Weight 182.0000
Product Brochure N/A
Product Manual KUM425_500INFO_1.pdf
Warranty Stamps
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