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SWP Proline 420S + WF400 - Three Phase Mig Welder + Separate Wire Feeder

Carriage Free UK Mainland.

Product Pricing

Item NameProduct DescriptionPriceQty
Proline 420S + WF400Three Phase Mig Welder + Separate Wire Feeder£1,894.38
ex vat

inc vat

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The MIG 420S + WF400 is a robust three phase machine ideally suited to medium to heavy fabrication and requires only a 20A fuse. Its full size cabinet can accept a full height gas cylinder and its large diameter wheels means it can be moved from job to job with little risk of toppling. The WF400 features SWP renowned all-geared drive system, thus minimising the risk of wire slip and making welds uniform. Further, with its 5 metre interconnection and 4 metre welding torch, this gives a working radius of 9 metres. The unit is also suitable for use with spool-on gun or push-pull gun, for increased work radius up to 13 metres. The MIG 420S + WF400's ability to take larger diameter wire than lower power units in the range means it can weld thicker plate, and its 21 switch settings allows for fine tuning of the output power.


  • Copper wound transformer and choke
  • Forced air fan cooling
  • Overload warning indicator
  • Heavy duty front and rear wheels
  • All geared 4-roll feed system
  • Cylinder support chain
  • Infinitely variable wire speed
  • Spot weld timer
  • Burnback control
  • Stitch welding
  • Soft arc technology
  • Digital volt and amp meter
  • M36-3 torch and 2068 regulator included
  • Optional mounting post and wheelsavailable for wire feed unit
  • W111443 - Spare 5mtr interconnectioncable assembly


Model Code9394
Input Voltage 50hz415V
Input Current20A
Voltage Settings21
Welding current amps40-420A
Current Range40-420A
Output @ 35% duty cycle420A
Output @ 60% duty cycle320A
Output @ 100% duty cycle310A
Wire size mm0.6-1.6mm
Packed Dimensions (HxWxL) mm880 x 410 x 720mm
Weight (Kgs)120