Located in Niepołomice Poland, Tesar Polska has been designing and manufacturing cast resin and instrument transformers since 2013.

Tesar Polska is part of the well-known transformer manufacturer Tesar, the first Italian company to implement the technique of resin casting for transformers.

After many years operating with a sales office in Poland, Tesar decided to build a new manufacturing facility by the green field in the industrial area of Kraków; it has been up and running since 2013 under its own name Tesar Polska.

In 2016, Tesar and Tesar Polska became part of R&S, a leading provider of electrical infrastructure products in key markets around the globe.