The Leroy-Somer R 726 Automatic Voltage Regulator (AVR) is an advanced electronic control module designed to enhance the performance of brushless alternators and generators. Primarily utilized as an add-on module to a main AVR, the R 726 enables seamless parallel operation with the mains (network) by providing precise control over the power factor (COS phi) and reactive power. Constructed on a robust black PCB, the unit is equipped with high-quality large transformers, durable electrolytic capacitors, and secure terminal blocks for reliable industrial applications. It features intuitive adjustment potentiometers for fine-tuning the voltage limit (LIMIT), stability (STAB), U/f ratio protection, and COS phi control. With dedicated connections for network (Reseau) or generator, and versatile voltage sensing inputs (400V, 100V, 0V across L1, L2, L3), this cRUus-certified regulator guarantees safe, stable, and highly efficient power generation.