A Contactor-Based Automatic Power Factor Correction (APFC) panel is a device designed to improve electrical efficiency by automatically adjusting the power factor of an electrical system. By using contactors to switch capacitor banks on and off, the APFC panel dynamically corrects the power factor in response to real-time changes in the load. This adjustment helps to minimize reactive power, reduce energy losses, and enhance the overall efficiency of the electrical system. The panel typically includes control logic and sensors that monitor the power factor and manage the contactors to ensure optimal correction. Widely used in industrial and commercial settings, a contactor-based APFC panel helps in reducing energy costs, improving system performance, and complying with regulatory requirements for power factor correction.