Traktionssysteme Austria wins major service contract in Serbia

Traktionssysteme Austria secures major service contract for CAF Urbos 3 Tram motors in Belgrade
Traktionssysteme Austria (TSA), the leading manufacturer of electromechanical drives for rolling stock and commercial road vehicles based in Lower Austria, has secured a significant service contract for the maintenance of TSA traction motors in CAF Urbos 3 trams in Belgrade. The contract, signed in February 2025 with public transport operator GSP Beograd, includes the overhaul of TSA motors as part of the TSA PitStop service program throughout the year.

‘Our service contract for the CAF Urbos 3 tram motors in Belgrade reaffirms the reliability and performance of our TSA PitStop program. With our expertise and innovative maintenance concepts, we ensure maximum availability and efficiency of traction motors – a critical factor for the seamless operation of Belgrade’s public transport system’, said Christian Schaden, Head of After-Sales & Service.

TSA PitStop: Maximizing lifespan and efficiency for traction motors
To guarantee the long-term performance and operational reliability of traction motors, TSA has developed a sophisticated service concept: TSA PitStop. This tailored maintenance and servicing program provides an efficient and cost-effective way to restore traction machines to peak performance in the shortest possible time. TSA combines decades of experience in electric drive development with state-of-the-art diagnostics and precision maintenance strategies.

The service offering includes detailed inspections, comprehensive overhauls, replacement of worn components, and performance-enhancing upgrades. Customers benefit from minimal downtime, as the TSA PitStop approach is designed to get vehicles back into operation as quickly as possible.

With over 1,400 units serviced in 2024 and a global customer base of more than 60 satisfied clients, the TSA PitStop program has established itself as a benchmark for sustainable value retention and efficiency.

TSA motors: The beating heart of Belgrade’s trams
Traktionssysteme Austria developed and manufactured the TMR 36-18-4 traction motors used in 30 five-section low-floor CAF Urbos 3 trams operating in Belgrade. These vehicles, equipped with TSA electric motors between 2010 and 2012, have been a key component of Belgrade’s public transport system since 2011.

The TSA TMR 36-18-4 traction motor was specifically designed to meet the demands of Belgrade’s urban transport system and features a stator winding optimized for 600V DC operation.

The CAF Urbos 3 trams, with a track gauge of 1,000 mm (meter gauge), are known for their fully low-floor design, ensuring barrier-free access for all passengers. These five-section articulated vehicles offer not only a high level of passenger comfort but also impressive capacity, meeting the needs of urban public transport.

TSA’s presence across Serbia
Beyond Belgrade, Traktionssysteme Austria is also present in other Serbian transport projects. In Novi Sad, TSA motors power 10 Solaris Urbino 12 Electric buses operated by JGSP Novi Sad. Additionally, TSA traction motors are installed in electric multiple units of Serbia’s national passenger railway company, Srbijavoz. These include 21 four-section Flirt 3 trains, 18 four-section Flirt 4 trains, and three four-section KISS 200 double-deck trains.