Tantra International supplies Automatic Voltage Controllers. Automatic Voltage Controllers is available in a capacity of 400 volts [three phase] and 230 volts [single phase]. Automatic Voltage Controllers is specifically used to protect the electrical and electronic equipment that are effected by the voltage fluctuation. Automatic Voltage Controllers finds usage in General Laboratory Equipment, C. N. C. Machines, Escalators and Elevators and Air-Conditioning Plants.