0349309879 - ESAB Replacement Contactor CL07A300M2 with BCLF10 Aux

Restore Your Welder with the Genuine ESAB Contactor

Is your ESAB welder acting up? A faulty contactor is a common culprit when your machine powers on but refuses to strike an arc, or if you hear a loud buzzing noise coming from the cabinet. The ESAB 0349309879 Contactor Assembly (CL07A300M2 + BCLF10) is the direct replacement part you need to get your equipment back in the fight. Welding machines rely on heavy-duty switches called contactors to channel the massive power needed for welding. Over time, the internal contacts can get pitted, burnt, or stuck, leading to unreliable starts or a completely dead torch. Replacing this component is a standard repair that can save you from buying a whole new machine.

This kit isn't just a generic switch; it is the exact OEM part specified for your ESAB equipment. It comes pre-assembled with the main contactor body (CL07A300M2) and the necessary auxiliary contact block (BCLF10) already attached. This means you don't have to fiddle around trying to transfer old, brittle plastic parts from your broken unit to the new one. The auxiliary block is crucial because it tells the welder's computer that the power is flowing, ensuring that gas solenoids and wire feeders activate in perfect sync with the arc. Without this feedback, your welder might sputter or fail to feed wire.

Installation is straightforward for those familiar with electrical repairs. The unit mounts securely into the existing footprint inside your welder's chassis. By choosing genuine ESAB parts, you ensure that the coil voltage matches your machine's control circuit perfectly, preventing immediate burnout that often happens with "universal" aftermarket replacements. Don't let a small electrical part stop your production line. Swap out that worn contactor with this high-quality ESAB replacement and get back to laying down perfect beads with confidence.