952564 - ESAB 180A Stud Mount SCR Thyristor Replacement

Restore Your Welder's Performance

Is your welding machine acting up? Are you experiencing issues with output control, or has your machine stopped welding altogether? The problem could be a faulty SCR. The ESAB SCR 180A Stud Mount (952564) is the direct replacement part you need to get your equipment back up and running. In many modern and legacy welding power sources, the SCR (Silicon Controlled Rectifier) is the heart of the power regulation system. It determines how much power reaches your torch or electrode. When an SCR fails, it can fail open (resulting in no output) or fail closed (resulting in full, uncontrollable output), both of which render your machine unusable.

This replacement unit is rated for 180 Amps, providing the heavy-lifting capacity required for professional welding tasks. The stud mount design makes installation straightforward for those familiar with machine repair. It bolts directly onto the heat sink assembly inside your welder. Because these components handle high current and generate heat, the stud mount ensures a solid connection that helps keep the part cool during those long beads. Don't risk your machine's performance with generic, unrated electronic parts; this specific unit is designed to match the electrical characteristics your ESAB welder expects.

Signs your SCR might be bad:

• The welder turns on but has zero output at the terminals.
• The welder outputs maximum amperage regardless of the dial setting.
• The circuit breaker trips immediately upon striking an arc.
• Unstable or erratic arc characteristics that don't respond to settings.

Replacing a blown SCR is a cost-effective way to extend the life of your welder without having to invest in a brand-new machine. When installing the ESAB 952564, remember to clean the mounting surface thoroughly and use a quality thermal paste to ensure the new SCR stays cool. Safety is paramount—always disconnect power and discharge capacitors before working inside a welding power source. With this high-quality replacement part, you can restore the smooth, consistent arc control that ESAB machines are known for.