Three- Phase Servo Voltage Stabilizer requires 360 to 460 VAC, 50Hz input voltage range for operation and also available 300 to 460 VAC, 50Hz. The Servo Voltage Stabilizer ensures manual operation in case of auto control circuit fails and widely used in commercial and home applications. The Servo Voltage Stabilizer consists of high torque AC synchronous motor which is driven by solid state controls, buck/ boost transformers and variable auto transformer. Three- Phase Servo Voltage Stabilizer is made using quality grade raw material which ensures durability of use along with long lasting trouble free service.