0320116881 - ESAB LAF 800/1000 SCR Rectifier Bridge Assembly

Restore Precision Power with the ESAB SCR Bridge for LAF Series

The ESAB SCR Bridge Comp LAF800/1000 (0320116881) is a critical replacement assembly designed specifically for the heavy-duty LAF series of welding power sources. In industrial submerged arc welding (SAW), the consistency of the electrical output is paramount to achieving flaw-free welds. The Silicon Controlled Rectifier (SCR) bridge acts as the heart of the power regulation system, converting incoming alternating current (AC) into the precise direct current (DC) required for stable welding arcs. Over time, power electronics can degrade due to thermal cycling and heavy loads; replacing a failing bridge with this genuine ESAB component ensures your equipment operates at factory specifications.

This assembly is engineered to fit seamlessly into LAF 800 and LAF 1000 models, eliminating the guesswork associated with generic aftermarket parts. The bridge controls the output voltage and current with high speed and accuracy, which is essential for the automated nature of submerged arc welding where deviations can lead to costly rework. By utilizing OEM parts, you maintain the integrity of the machine's control loop, ensuring that the feedback systems function correctly and that the arc response remains instantaneous.

Failure of an SCR bridge can manifest as erratic arc behavior, inability to reach full output, or complete loss of DC output. Installing the 0320116881 assembly restores the machine's ability to handle high-amperage duty cycles without overheating or fluctuation. This component is built to ESAB's rigorous standards for durability, featuring robust connections and high-grade semiconductor materials capable of withstanding the harsh electrical environment of heavy industrial fabrication shops.

Key Technical Benefits

• Direct Fit Compatibility: Engineered specifically for the chassis and cooling airflow of LAF 800/1000 units.


• Stable Arc Control: High-quality thyristors ensure precise phase angle control for smooth output.


• Industrial Durability: Designed to resist voltage spikes and thermal stress common in heavy manufacturing.


• System Protection: Proper rectification prevents damage to downstream DC components and capacitors.