WB-M500 GMAW Inverter Power Supply

WB-M500

Click here to download more information.

This 500-amp standard welding supply is for high quality welding in any situation at 100% duty cycle. The M500 provides significant improvement in arc stability in the range of low to high electric currents, and delivers a beautiful weld bead with a uniform bead end and less voltage fluctuation, even during high-speed welding.

WB-M500 Key Features & Benefits

• Optimum welding current control depending on intended use (Standard Mode - High Speed Mode - Extension Cable Mode)

• High duty cycle for high output and automated applications

• Uniform and beautiful bead appearance with low spatter

• Digital Turbo Start and End Pulse function provide excellent arc starts


Specification Value
Number of phases 3
Rated frequency 50/60Hz
Rated input voltage 460V
Input voltage range 460 V±10%
Rated input power 25.2kVA 22.6kW
Rated input current 31.7A
Rated output current 500A
Rated load voltage 39.0V
Rated output current range 30 - 500A
Rated output voltage range 12.0 - 45.0V
Maximum no-load voltage 81V
Rated duty cycle 100%
Number of welding conditions 100
Operating temperature range 14º F to 104º F (-10 to +40º C)
Operating humidity range less than 50%, 104º F (40º C), less than 90%, 68º F (20º C)
Storage temperature range -13º F to +131º F (-25 to +55º C)
Storage humidity range less than 50%, 104º F (40º C), less than 90%, 68º F (20º C)
Dimensions (W x D x H) 15.6 x 28.0 x 31.9 in. (395 x 710 x 810mm)
Mass 170 lbs (77kg)
Rated input power for DC TIG scratch start 13.7kVA 12.2kW
Rated output current for DC TIG scratch start 400A
Rated load voltage for DC TIG scratch start 26.0V
Rated output current range for DC TIG scratch start 10 - 400A
Rated duty cycle for DC TIG scratch start 100%
Rated input power for DC STICK scratch start 12.5kVA 12.2kW
Rated output current for DC STICK scratch start 300A
Rated load voltage for DC STICK scratch start 32.0V
Rated output current range for DC STICK scratch start 20 - 300A
Rated duty cycle for DC STICK scratch start 100%