An APFC controller is an advanced electrical device designed to automatically monitor and regulate the power factor of industrial, commercial, and residential electrical systems. Poor power factor can lead to energy wastage, higher electricity costs, and increased stress on equipment such as motors, transformers, and generators. The APFC controller continuously measures reactive power in the system and automatically switches capacitor banks on or off to maintain the desired power factor. Many controllers come equipped with digital displays for real-time monitoring, protective features like fuses, relays, and contactors to prevent overvoltage, undervoltage, or overcompensation, and support for communication protocols like RS485 for integration into energy management systems. Widely used in factories, commercial buildings, and data centers, APFC controllers help improve energy efficiency, stabilize voltage, extend equipment life, and ensure cost-effective, reliable, and sustainable power management.
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