This Auto Variable Transformer is ideal for controlling supply voltage that is used to speed up electric motors, make lights brighter or dimmer or to replicate specific situation so that assorted testing procedures can be carried out. These offered transformers can give output varied amount of voltage from the same input supply. Provided variable transformer is a specific type of auto transformer that has single coil core design. This transformer is equipped with high-efficiency control dial ensuring ease operation. Apart from this, we make avail this Auto Variable Transformer in both single phase and three phases in order to meet exact need of our customer.