View and Submit Quote

New Product Added to Quote Request


Rental Equipment

FX650 Multi-Operator Paks

FX650 4PakFX650 6Pak

Top Features

  • DC CC CV
  • Voltage Reduction Device - Reduces OCV When Not Welding
  • 15/20A GFCI 115V, 15A Auxiliary Power
  • Welding Outputs are Rated for Extreme Temperature Operation
  • Available in 4Pak, 6Pak and 8Pak Configurations

The FX650 is a multi-process welder that is easy to set up and easy to operate, but rugged and versatile enough for construction, fabrication, shipbuilding and other heavy-duty applications.

Product Details


Individual Module Specifications

Input Power: 380/460/575/3/50/60
Rated Output: 650A/44V/100%
Input Current: 57/47/38A
Output Range: 10-815A
Dimensions (H x W x D): 21.8 x 16.1 x 29.3 in (554 x 409 x 584 mm)
Weight: 165 lb (74.8 kg)

Additional Features

The inverter-based technology is a step forward in engineering that accommodates the subtle differences in style between one operator and another, without sacrificing the reliability.


  • VRD (Voltage Reduction Device) - reduces OCV (open circuit voltage) when not welding for added safety
  • 15/20A GFCI 115V, 15A Auxiliary Power – For 115 volt wire feeders, grinders, or lights
  • Desert Duty Rated – Welding outputs are rated for extreme temperature operation up to 55°C

All Product Resources

Options, Accessories and Related Equipment

FX650 Multi-Operator Paks

Open the calendar popup.
Open the calendar popup.
Credit Card Icons

Airgas, an Air Liquide company, is the nation's leading single-source supplier of gases, welding and safety products. Known locally nationwide, our distribution network serves more than one million customers of all sizes with a broad offering of top-quality products and unmatched expertise.