An Inverter Power Source for MMA welding, with 400Vac three-phase power supply.Robust and easy to use.The E400 is fitted with a 4 wheel under carriage for easy transport practices in the workshop.The front panel houses a digital display which shows the actual welding current.Hot Start and Arc Force are adjustable via two knobs on the front panel.The welding output current is controlled by a single knob from 30-400 Amps.A remote control socket is a standard feature allowing the operator to adjust the amperage away from the power source.For your own safety, this welding machine, is equipped with VRD system. The Voltage Reduction Device (whose acronym is: VRD) is a device used to decrease output voltage to a safe level when the welding source it is outside the welding cycle. Through this particular arrangement, when the arc is switched off, the open circuit voltage is reduced to only 25 V.This Power source is recommended for use with the Ter RWS Chopper Wire Feeder.