672162 - ESAB 3-Pole 30A Replacement Contactor with 115V Coil

Technical Overview of the ESAB 672162 Contactor

The ESAB 672162 is a specialized electromechanical contactor designed specifically for use within ESAB welding power sources. As a critical component in the power regulation and distribution system of a welder, this contactor features a 3-pole configuration, allowing it to simultaneously switch three separate power lines, making it ideal for three-phase equipment. It is rated for a continuous operational current of 30 Amperes, ensuring it can handle the substantial power loads required during active welding processes without overheating or degrading.

The control circuit for this device operates on a 115VAC coil. This standard voltage specification ensures seamless integration with the existing control transformers found in many industrial welding machines. The coil is engineered to provide a strong, decisive magnetic force that closes the contacts rapidly, minimizing arcing and contact bounce. This is particularly important in welding applications where stable power delivery is essential for maintaining arc quality and protecting sensitive inverter or transformer components downstream.

Constructed from high-grade, arc-resistant materials, the housing of the ESAB 672162 provides excellent dielectric strength and thermal stability. The internal contacts are likely composed of a silver-alloy material designed to resist oxidation and pitting, common issues in high-cycle switching applications. Using genuine OEM parts like this contactor is vital for maintaining the safety certifications (such as CSA or UL) of the original equipment. Generic replacements may not meet the specific spacing, thermal dissipation, or actuation speed requirements engineered into the original ESAB design, potentially leading to premature failure or safety hazards.

Maintenance professionals and industrial electricians will appreciate the direct-fit nature of this component. The mounting footprint and terminal locations correspond exactly to the original part, reducing downtime during repairs. When diagnosing power issues in ESAB equipment, verifying the integrity of the main contactor is a standard procedure; if the coil energizes but power does not pass, or if the contacts are welded shut, this 672162 unit is the specified replacement to restore full functionality.