Multiquip D0923100004 Inverter Unit GAW-135H - OEM Replacement Part

The inverter unit is the core power control component in the GAW-135H generator/welder, responsible for converting and regulating DC welding output from 40 to 135 amps across five selectable current settings. This critical assembly manages the unit's 3.28kW rated output, delivering stable 130-amp rated current at 25.2 VAC for DC arc welding operations with a 40% duty cycle. The inverter works in conjunction with the excitation system, which produces 19-22 VAC from the lamp coil, then processes this through three rectifying diodes for excitation, battery charging, and power regulation.

When the inverter unit fails, symptoms include inconsistent welding current, inability to maintain selected amperage settings, loss of arc stability, or complete failure of welding output while AC generator function may continue. The unit controls current range selection from 40 to 135 amps for electrode sizes 3/32" to 5/32", making it essential for both light 40-amp work and heavy 135-amp applications on steel structures and thick plates.

Compatible with:

• Multiquip GAW-135H

Genuine Multiquip OEM part, sold by an authorized dealer.