The POWERSTAT Superior Electric VARIABLE AUTOTRANSFORMER 136 is a versatile electrical device that allows for the stepless adjustment of AC power from 120VAC to a maximum of 100VAC. Manufactured by Superior Electric, known for their quality products in the electrical equipment and supplies industry, this autotransformer is ideal for businesses and industrial settings requiring precise control over power levels. With its reliable brand reputation and specific model number 136, this variable autotransformer offers a reliable solution for a wide range of applications.