BLS RABe 525

The BLS RABe 525, also known as NINA or Nina, is a Swiss electric multiple unit built by Bombardier Transportation with electrical equipment by Alstom. The train is principally used by the BLS AG on Bern S-Bahn services, three units (525 038-041)) belong to RegionAlps. An updated version exists as the BLS RABe 535, also known as Lötschberger, also exists with a revised front end and an interior intended for longer distance services.

Design
The articulated trainset was designed to be built with from two to six sections and with two to six motorized axles. The 3 car units have a length of 47.7 m, they are 3,030 mm wide and 4,315 mm tall. It has 20 first class seats and 114 second class seats aswell as 70 standing places. The 4 car units have a length of 61.9 m, they are 3,030 mm wide and 4,315 mm tall. It has 20 first class seats and 159 second class seats aswell as 85 standing places.The design speed is 140 kph.

Named units
BLS initially named the NINA after bodies of water. Later, "Wankdorf" was added as a stop and "Konolfingen" was the first place with a coat of arms. After the refit, two more NINAs were baptised with the coats of arms of towns.

Only the baptised vehicles are listed:
 * Baptism name removed after modernisation
 * Municipal coat of arms instead of rivers
 * Station instead of river

Operation
The RABe 525 is used on the following routes:
 * Lyss–Büren an der Aare
 * Hasle-Rüegsau–Konolfingen–Thun
 * Konolfingen–Thun
 * / Thun–Belp–Bern–Burgdorf–Ramsei-Sumiswald-Grünen
 * Solothurn–Burgdorf–Ostermundigen
 * Bern–Kerzers–Neuchâtel + Murten/Morat–Payerne
 * / Lucerne–Wolhusen–Huttwil–Langenthal
 * Lucerne–Wolhusen–Willisau
 * Domodossola–Brig–Visp

Refit program
Between 2015 and 2019, BLS modernised its entire Nina fleet. The 1st class is no longer be in the high-floor compartment, but has been moved to the low-floor area. The lighting has also been adapted so that all compartments are well lit. The toilets were also be slightly adapted. A standing area was created in 2nd class and the colour scheme inside and outside the vehicles was standardised so that all trains have the same design. The refit was completed in June 2019.