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Complete Solution for Industry

CITOSTEEL -S RANGE is a brand new range of Oerlikon products based on the latest inverter platform, combining modularity, ease of use and optimal MIG/MAG or MMA welding performance with excellent power cost efficiency. Three power sources: 355S, 425S and 505S with a choice of separate wire feeders, standard WF52D for basic use, or the advanced WF56D for more demanding applications, helps customer to fulfill every possible welding needs.
All CITOSTEEL -S have the option of water cooling by simply adding the new COOLARC® 26.

Product Advantages

  • High duty cycle 420A/100% (425S & 505S)
  • Inverter engine technology – ECO Friendly
  • Oerlikon Industrial design – ready to use anywhere
  • Easy maintenance and servicing Easy access to all components inside Software update via laptop or USB (WF56D)
  • Intelligent F.A.N. (Fan As Needed) in the inverter Variable speed controlled fan (energy-saving)
  • Cooling tunnel design – components arranged to protect against dust and dirt
  • Professional wire feeding system – robust and precise

New Ergonomic Design

  • Simple navigation also when using welding gloves
  • Practical handle for effortless gripping even with gloves and safe movement of the machine
  • Rotatable wire feeder Swivel on the power source enabling rotation of the wire feeder and setting it in any position
  • Power Source water cooled ready (cooler COOLARC® 26 as option)
  • Cable Management System (option) For easy transportation of the whole welding system even with very long connection cable
  • Heavy duty undercarriage
  • Rubber bumpers protecting feet and 4 lifting eyes for easy hook-in and safe transportation

True Reliability

  • Cable connections on front (in standard) and back rear side (in option) All cable connections can easily be made without tools
  • Practical, big storage locker inside the power source with key lock, internal lights, for accessories
  • Intermediate hose packages Heavy-duty protective hose and military-quality plugs
  • Large wheels for easily effortlessly overcome obstacles such as cables or thresholds


Item Number W000404457 W000404458 W000404459
Primary Voltage 400V/3Ph 50/60Hz ± 15%
Max Input Power (kVA) 15 19 23
Input 1max (A) 21 27 34
Fuse size (A) 25 32 32
Rated Output 350A@50%
420A@100% 500A@60%
Efficiency > 85%
Idle Power < 35W
Weight (kg) 68 78 79
Dimensions H x W x D (mm) 932 x 560 x 925
Protection Class IP23