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Traction transformers

Traction transformers are critical components in the traction chain, affecting both train performance and operator services. Hitachi Energy supplies traction transformers for all applications: high-speed, commuter and regional trains, locomotives, tram-trains and AC metros offering different designs in terms of size, weight and power ratings. They can be mounted either in the machine room of the train, on the roof or under the floor, providing maximum flexibility and reliability in single and multiphase systems.

Most of the world’s train manufacturers and rail operators rely on Hitachi Energy traction transformers.

Why Hitachi Energy?

  • More than 100 years of experience in transformers
  • An estimated global installed base of 30’000 units worldwide
  • Independent supplier present in more than 100 countries
  • State-of-the-art transformer technology
  • Custom-made solution to withstand physical and operating constraints
  • Global and comprehensive support network, providing 24/7 assistance and service
  • Global footprint with 4 manufacturing centers

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Extending the life of Renfe high-speed trains


Hitachi Energy launches innovative oil-free and plug-and-play traction transformer

RESIBLOC® Rail dry-type traction transformer with integrated cooling system is designed to reduce CO2 emissions and total operating costs, while increasing energy efficiency

innovative oil-free and plug-and-play traction transformers
power plant engineer for substation

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