An Automatic Power Factor Correction (APFC) panel is an electrical device designed to improve a system's power factor by automatically switching capacitor banks on or off. The manufacturing process is a specialized field with several key steps. It starts with a design phase where engineers calculate the required capacitance and determine the panel's layout. . The panels are then fabricated from sheet metal and equipped with components such as a power factor controller, which acts as the system's brain, capacitor banks, and contactors for switching. Manufacturers also include safety features like relays and fuses to protect against electrical faults. The final product is rigorously tested to ensure it meets safety standards and performs effectively, helping industries reduce energy waste, lower electricity bills, and avoid utility penalties.