0193922001 - ESAB B16-30-01 Replacement Contactor Relay

Restore Your Welder's Performance

Is your welding machine failing to strike an arc, or are you hearing a loud buzzing sound from the power source? It might be time to replace your main contactor. The ESAB Contactor B16-30-01 is a genuine replacement part designed to get your welder back up and running smoothly. The contactor acts as the main switch for the high-voltage power inside your machine; when you pull the trigger, this device engages to send power to the torch. Over time, the internal contact points can wear down, pit, or weld together, leading to erratic performance or a machine that won't turn off.

Why Choose Genuine ESAB Parts?
Welding machines operate in tough environments with dust, heat, and constant electrical cycling. This B16-30-01 contactor is built to withstand these conditions better than generic alternatives. It features three main power poles to handle the heavy lifting and one auxiliary contact that helps the machine's computer or control board monitor the switch's status. Installing the correct part means you don't have to worry about modifying mounts or guessing if the amperage rating is sufficient.

Installation and Safety
Replacing a contactor is a standard repair for many welders, but it deals with high voltage. Always ensure your machine is unplugged and capacitors are discharged before attempting repair. This unit is designed for a direct fit into compatible ESAB power sources, making the swap straightforward for those with electrical repair experience. Don't let a faulty $50 part keep your expensive rig out of commission—swap in a new contactor and get back to laying beads.