Air Cooled Variable Autotransformer

Single Phase High Current Air Cooled Variable Autotransformers each of 200A rating (Radiotone make)

We specialize in the manufacturing of Single Phase High Current Air Cooled Variable Autotransformer (colloquially known as Variac) in 100A /200A /400A /600A /800A /1200A ratings.

Three Phase units are built by using such three stacks & motorizing them on common shaft. This is a substitute for oil cooled units which are less preferred, for safety reasons, in many hazardous applications.

Single Phase High Current Air Cooled Variable Autotransformers (colloquially known as Variac) are very easy to maintain & service. Enclosed units are also available.