Automatic power factor controller [apfc] system is a necessity in view of high cost of power. This controller is also useful for applications where stiff penalties are imposed against low power factor leading to poor power efficiency, thereby increasing the apparent power drawn from the distribution network. This factor results in overloading of transformer, bus bars, switchgear, cables and other distribution devices within the industry or consumer area. The automatic power factor controller [apfc] panel system from servomax ensures optimum power for running loads. The electrical networks cater to variety of non-linear loads like ups, soft starter, ved, etc, which dynamically fluctuate and create waveform distortion thereby necessitating installation of apfc panel with line filter. This automatic power factor controller is necessary for applications like avoid penalty for lower power factor; enjoy incentives for higher power factor operation being extended to industries by some electricity boards/companies; optimise connected load for improved plant load factor, avoid manual disruption; avoid high current consumption losses; improvement in voltage regulation; and decrease maximum demand kva, thus avoiding penalty and demand charges. Apfc panels operating the entire factory offer additional benefits like minimising the line losses, thus saving power consumption; longer life for all electrical circuits, cables, bus bars, switches, motors, etc.