Used IGBT technology is the most recent.
High arc stability with minimal sputter.
excess voltage and excess current are automatically protected.
excessive duty cycle.
Adjustable ARC force.
there is a VRD option.

ARC 330 IS Welding Machine Details

Amps Input At Rated Output 60.9
Duty Cycle 60
Frequency 50-60
input voltage 230 V
Net wight 10.5
OCV 75 or 12(VRD)
Output Range 30-330
Phase 1
Voltage 29.6
Output Current 300 Amp
Weltronix Arc MINI200 Welding Machine