An Auto Transformer is an electrical transformer that uses a single winding to step up or step down the voltage of continuously variable voltage of 2 Amps to 3000 Amps. Unlike traditional transformers, which have separate primary & secondary windings, an autotransformer has a single winding that is tapped at different points to provide multiple voltage levels. It features single &three phase, hand operated, motor operated, booster transformer, air & oil cooled. Auto Transformer is widely used in industries such as textiles, cement & steel, motor manufacturers, transformer manufacturers, and education institute.