The Staco Variac 201-40 is a 40V 60Hz autotransformer with a turns ratio of 1:20. This product, manufactured by STACO, is designed to vary input voltage to a specific output voltage by adjusting the turns ratio. It is widely used in electrical equipment and supplies for various industrial applications where precise voltage regulation is required. With its reliable brand reputation and specific technical specifications, the Staco Variac 201-40 is a valuable component for ensuring consistent and safe power distribution in commercial and industrial settings.