TRACTION : Technology on the move

JST transformateurs is the French pioneering designer of on-board transformers for very high-speed trains (TGV) with Alstom Transport Group and SNCF.

World-famous know-how :

Independent from large groups, we are a supplier of traction transformers, well-known to the largest train manufacturers such as Alstom Transport, Bombardier Transportation and Hyundai Rotem
We provide the best service in operation to users such as SNCF, RATP, SBB, PKP, CFL, SNCB, and KORAIL.

Integrated design and manufacture :

With its two traction transformer production sites, one based in France, and the other in India, JST transformateurs masters design and production of the major transformer components through its subsidiaries ISOTRANSFO (Portugal) for insulation pieces, and WELTECH (Poland) for steel tank transformers.

Our mastery of our design and construction processes is supported by IRIS and ISO9001 quality standards.