The unveiling of Stadler’s new JK series subway train marks a significant step in the development of the Berlin rail network. Compared to the trains that are over three decades old, the new train represents a leap into a new technological age.
While there are hardly any noteworthy differences on the outside, the JK series impresses with a wealth of innovations on the inside. An improved sense of space, more generous space for standing passengers, and vertical grab bars that make gripping ceiling bars unnecessary are just some of the highlights. The angled grab bars also make it easier for wheelchair users to pass through the aisles. In addition, space-saving screens and an integrated size indication on the signs indicating spaces for the severely disabled are part of the modernized interior.
The first test cars have been rolling through the Berlin subway network since January, before being used for the first time in regular passenger service from late summer 2024. The introduction of this new subway train series represents a significant advance in railway technology and lays the foundation for further innovations in the future.
Technological advancement is driven by the collaboration between REO TPM and customer ABB. Together, a special DC line choke was developed at the end of 2021 to integrate it into the new U-Bahn cars. As an essential component of the drivetrain, this choke offers important protection against circuit-related current peaks and reduces harmful grid feedback.
A special feature of the DC line choke is its EMC compliance, which is ensured by surrounding the choke with thick iron sheets. This ensures that electromagnetic interference is reduced to a minimum, which in turn increases the safety and reliability of U-Bahn operations.
