Electrification

Siemens Mobility is your partner for tailored, reliable electrification solutions for mass transit systems. With our comprehensive expertise, our personal commitment, and our many years of experience, we can implement solutions based on proven products that have set new standards in technology, cost efficiency, and quality. The result are dependable traction supply and contact line systems that offer attractive solutions in every detail.

AC Switchgear

AC Switchgear

Siemens Mobility can design and manufacture traction power supply equipment to meet the specific needs of the project. The equipment offers both low maintenance and compact dimensions, making it suitable for...


Overhead Line Equipment

Overhead line equipment

Siemens can supply modern high performance contact line systems for and main line and mass transit applications, all designed to meet the project requirements as well as climatic conditions such as ice, snow and salt laden atmospheres.


AC Protection Relays

AC Protection Relays

Siemens protection concept is based on deployment of the Siprotec 4 system family, the standard for numerical protection systems. The protective devices guarantee selective and fast switch-off of faulty overhead contact lines and traction power lines and protect transformers, cables and switchgears.



DC Switchgear

DC Switchgear

The need for highly reliable traction power supplies is becoming more and more important and Siemens substation designs take into account the need for minimum space, low maintenance and proven high performance equipment.


Transformers, Rectifiers and Inverters

Transformers, Rectifiers and Inverters

Unlike in the public utility sector, traction power transformers operate with a single phase and step down the high voltage to the contact line voltage of 15 kV or 25 kV.


DC Protection Relays

DC Protection Relays

The Sitras PRO combined DC protective unit and controller is used in the power supply for DC railways in mass transit and main line systems.  It protects DC switchgear and contact line systems against critical operating conditions and detects short-circuits during the current rise even before the maximum short-circuit currents are reached.