The Auto Transformer is made utilizing high-grade components that are obtained from trusted suppliers. These transformers are used where voltage fluctuation is a common phenomenon. In spite of best efforts, no state electricity board can ensure constant voltage to the customer because of long and inadequate distribution lines and irregular load pattern on distribution transformers. The Auto Transformer is an equipment obtain constant voltage from fluctuating supply system. The industrial units running round the clock usually face the problem of low and high voltage.