The  Reactive Power Compensation Controller is a smart step power factor (APFC) relay that maintains target cosφ and reduces penalty charges in commercial and industrial panels across Pakistan.Setup is straightforward: set CT ratio, target PF, switching mode, and delays using the front keys and clear display. The  supports 230/400 VAC, 50/60 Hz systems and provides relay outputs to drive capacitor contactors or thyristor modules. Status LEDs and alarms make diagnostics fast. Features: 6‑12 step automatic power factor control Quick setup: CT ratio, target cosφ, delays Optimized switching reduces hunting and wear Protections: O/V, U/V, step inhibit; harmonic lockout (model dep.) Bright display, status LEDs; panel‑mount 96×96 mm Specifications: Models: PFR-6, PFR-12 System: 3‑phase, 230/400 VAC, 50/60 Hz Setpoint: target PF ~0.80–0.99 (lead/lag selectable) Mounting/Cutout: 96×96 mm; cutout ~92×92 mm; optional RS‑485 (model dep.) Uses: APFC capacitor banks in LV panels Shopping malls, hospitals, office towers Manufacturing plants and workshops Cold storage, HVAC chillers, elevators Diesel/utility mains (consult for generators) Package Includes: 1 x Reactive Power Compensation Controller