Key takeaways
- The RABe 525 is a low-floor local-service multiple unit of BLS – the nickname NINA is derived from exactly that.
- Fastest way to spot it: one row of windows, low-lying door areas, BLS markings, designation RABe 525.
- Low-floor means almost step-free boarding – a feature you notice instantly on the platform.
- The missing D in the designation says: no dedicated luggage compartment, just first and second class.
- Lines and fleets change with timetable years and contract awards – check the current status before your trip.
Contents
Fact file
| Vehicle type | Single-deck low-floor electric multiple unit for local services |
|---|---|
| Designation | RABe 525 – R = fast-running, A = 1st class, B = 2nd class, e = electric |
| Operator | BLS |
| Nickname | NINA – derived from Niederflur-Nahverkehrszug (low-floor local train) |
| Layout | Articulated multiple unit with a low-lying entrance area |
| UIC country code | 85 (Switzerland) |
Identifying features
Is this really the class in front of you?
- Single-deck multiple unit with only one row of windows
- Strikingly low-lying door areas – almost step-free boarding
- Segmented body with articulation joints between the train sections
- Designation RABe 525 and BLS markings on the vehicle
- Local-service and S-Bahn destinations on the display, no long-distance routes
- No luggage compartment in the name – the designation names only A and B
Updated: August 2026 – A single-deck multiple unit with strikingly low-lying doors, a segmented body and BLS markings: that’s the RABe 525, known day to day as Nina. This page explains the Swiss designation, shows you how to spot the low-floor design, and places the train within local services.
Spotted a Nina? Note the number.
With series-built multiple units, it's the individual unit that counts, not the type – Traintrack lets you log both in seconds.
What is the BLS RABe 525?
The BLS RABe 525 is a single-deck low-floor electric multiple unit for local services. It runs as a single, segmented unit with no separate locomotive and carries both first and second class. The nickname NINA is derived from Niederflur-Nahverkehrszug (low-floor local train) and so names exactly its design principle. It was built by Adtranz, whose rolling-stock business merged into Bombardier Transportation shortly afterwards.
The benefit of this principle lies less in speed than in dwell time. Where passengers can board and alight without a step, the stop is quicker, and on dense-interval timetables with many stops this adds up noticeably across a line. That’s why low-floor design has become standard in local services, while long-distance services stuck with higher boarding for a long time. What else sets these two worlds apart is described in the article on local versus long-distance services from a spotter’s perspective.
Reading the designation: what RABe 525 tells you
Swiss vehicle designations are little profiles in miniature. Once you can read them, you can place even unfamiliar vehicles straight away.
Capital letters = what's on board
For multiple units, the capital letters name the classes and compartments carried: A first class, B second class, D luggage. The leading R marks a fast-running vehicle.
Lower-case letters = how it runs
The lower-case e stands for electric traction. Other lower-case letters encode other technology – h, for example, rack-and-pinion drive, as found on Swiss mountain railways.
Number = number series or axle ratio
Modern multiple units carry a three-digit number series. Older vehicles instead carry a fraction such as 4/4 – numerator equals powered axles, denominator equals total axles. Roman numerals after it denote build series.
How to turn this logic into a fixed sequence of observations, rather than starting from scratch with every vehicle, is shown in the guide to identifying classes.
Recognising it on the platform
The RABe 525 gives itself away through its boarding height. Stand on the platform and compare the door sill with the edge of the platform: on a low-floor vehicle, the two are almost level, while classic coaches need two to three steps.
| Observation | What you see | What it tells you |
|---|---|---|
| Window rows | one | rules out double-deck vehicles |
| Door sill | almost at platform height | low-floor vehicle |
| Front of the train | no separate locomotive | multiple unit |
| Body | segmented, with articulation joints | typical local-service multiple unit |
| Markings | BLS, RABe 525 | unambiguous identification |
| Destination board | local-service line | matches the service profile |
Doors as an identification feature
On multiple units, the number, width and height of the doors often say more about the vehicle's job than the front end or livery. Many wide doors close together mean local services with high passenger turnover; a few narrow doors mean longer runs.
Areas of operation change
Which lines are worked with the RABe 525 and how many units are currently in the fleet changes with timetable changes, contract awards and refurbishments. Rely on current information and sightings rather than older overviews.
Why low-floor design changed local services
It’s worth briefly understanding what problem this design solves – then you’ll recognise it in future even on vehicles you don’t know.
Classic coaches have a floor sitting well above rail level, because bogies, brakes and equipment need room underneath. Boarding happens over several steps. That’s unproblematic on long runs with few stops, but in local services it costs seconds at every stop – multiplied by dozens of stops per diagram, that adds up to minutes missing from the timetable.
Low-floor vehicles lower the floor in the entrance area and move the equipment to other sections of the train or onto the roof. This shows up in several places: in the low-lying door sill, in a segmented body whose height varies along the train, and often in roof-mounted equipment housing components that used to sit underfloor.
You can check exactly these three features on any vehicle, regardless of operator or type. They also explain why local-service multiple units are so often built as articulated units: short, articulated sections combine more easily with varying floor heights than long, rigid coaches.
For spotters this has a pleasant side effect: a low-floor vehicle is noticeably easier to photograph on the platform, because the interesting details – the door area, markings, bogies – sit closer to eye level than on high-floor coaches.
Current sightings from the community
Check which vehicles have just been reported – and plan your trip on real data instead of guesswork.
Photo tips for local-service multiple units
Local-service vehicles rarely stand still for long and often run in unfavourable platform light. But you get plenty of opportunities – use them to gather deliberately varied shots.
Three-quarter view from the end of the platform
From the far end of the platform, you get the front and the side in one shot without waiting passengers in the way. The safety line is the limit here, not the platform edge.
Detail: the entrance area
A shot of the door area shows the low-floor design better than any wide shot – and documents exactly the feature that defines this vehicle.
Use backlighting deliberately
If the sun is unfavourably placed, switch to the other side of the platform or work with the backlighting as a silhouette shot instead of fighting it.
Always get the number too
An additional tight shot of the markings turns the photo into a verifiable sighting – the decisive difference with series-built vehicles.
The underlying technique – focal plane, exposure, composition – is covered in the guide to taking good photos of trains. Regardless of the subject: stay behind the safety line, don’t step onto tracks or operational installations. The rules are summarised in the article on the safe distance from the track.
Common mix-ups
It points to the RABe 525 if …
- the train is single-deck with only one row of windows
- the door sills sit almost at platform height
- the body is segmented and no locomotive runs at the front
- the markings and designation read BLS and RABe 525
Look more closely if …
- another single-deck local-service multiple unit is in the frame
- you only see the train from an angle behind, or in backlighting
- a high platform makes the boarding height hard to judge
It isn't a RABe 525 if …
- you count two rows of windows, one above the other
- a separate locomotive runs at the front
- the markings name a different operator or a different number series
The closest neighbours are the also single-deck RABe 535 “Lötschberger” for longer runs and the double-deck RABe 515 “MUTZ”. From the wider world of Swiss multiple units, the RABe 521 from the FLIRT family is also worth considering if you’re unsure of the identification.
Verdict
The RABe 525 is a good example of how vehicles in local services can be understood through their job: low boarding, many doors, a segmented body – all consequences of dense intervals and short dwell times. Anyone who knows this logic only needs the markings to confirm it.
In short
One row of windows, door sill almost at platform height, BLS markings: that's the Nina. The design follows the job – and for your collection, the full vehicle number is what ultimately counts.
Collect local services systematically
Especially with common vehicles, a clean log book pays off – Traintrack turns it into an evaluable collection.
Summary
- The RABe 525 stands for a whole vehicle generation in Swiss local services: short dwell times through low boarding rather than high top speed.
- The Swiss designation describes classes and traction, while the nickname NINA names the technical concept.
- For identification, the window rows, boarding height and operator markings are enough.
- Photographically, the platform pays off: the low boarding edge and the articulated gangways are the characteristic details.
Frequently asked questions
What does the designation RABe 525 mean?
R stands for a fast-running vehicle, A for first class, B for second class, and the lower-case e for electric traction. The 525 is BLS's three-digit number series. A D for a luggage compartment doesn't appear in the designation.
What does the nickname NINA stand for?
NINA is derived from Niederflur-Nahverkehrszug (low-floor local train) and describes exactly the vehicle's concept: a local-service multiple unit with a low-lying entrance. The name is more familiar in everyday use than the technical designation, but doesn't replace it in documentation.
What does low-floor mean on a multiple unit?
The floor in the entrance area sits noticeably lower than on classic coaches, so the step from the platform is almost level. This noticeably shortens dwell times and makes access easier with a pushchair, wheelchair or luggage – a key operational advantage in dense local services.
What's the fastest way to recognise the RABe 525?
By three things: only one row of windows, strikingly low-lying door areas, and the BLS markings. The designation RABe 525 on the vehicle confirms the identification. Double-deck vehicles are ruled out immediately by their second row of windows.
What's the difference between RABe 525 and RABe 515?
The RABe 525 is a single-deck low-floor multiple unit, the RABe 515 a double-deck multiple unit. The difference is visible from a great distance: one row of windows versus two. Both belong to the BLS fleet but do different jobs in local services.
Does the RABe 525 carry first class?
Yes – the designation includes both A and B, so first and second class. That's exactly the value of the Swiss system: you can read off which classes are on board from the name, without having boarded the vehicle.
Where does the RABe 525 run?
On BLS local services. Exactly which lines and diagrams are worked by the RABe 525 depends on the timetable year, contract awards and vehicle availability, and changes regularly. Check the current status via timetable information and current sightings rather than older lists.
How do I document a sighting properly?
With the full vehicle number, date, location and line. Swiss vehicles carry the country code 85 in the UIC number. For series-built vehicles in local services, the number is the only way to tell one sighting apart from the next.
Log your sighting of the BLS RABe 525 (Nina)
Date, location and vehicle number logged in seconds – and visible to the community.
Related classes
BLS RABe 535 (Lötschberger)
The RABe 535 'Lötschberger' is BLS's single-deck FLIRT multiple unit for RegioExpress services. Here's how to recognise it confidently and read its designation.
EMUBLS RABe 515 (MUTZ)
The RABe 515 'MUTZ' is BLS's double-deck multiple unit from the Stadler KISS family. Here's how to read the Swiss designation and recognise it on the platform.
EMUSBB Class RABe 521 (FLIRT)
The RABe 521 is an electric low-floor multiple unit from SBB's FLIRT family. This page explains the Swiss designation and shows how to identify it beyond doubt.
EMUSBB Class RABe 524
The RABe 524 is an electric multiple unit from SBB's FLIRT family. Here's what the designation means and how to identify it beyond doubt.
EMUSBB Class RABe 526 (Thurbo FLIRT)
Several quite different vehicles in Switzerland carry the series 526. Here's how to identify the Thurbo FLIRT and avoid mixing it up with its namesakes.
EMUSBB Class RABe 531
The RABe 531 is an electric multiple unit from SBB. This page shows how to identify it reliably through the Swiss designation and a fixed chain of features.
Who is behind it
Groups, brands, manufacturers and operators – who owns whom and how to recognise them out in the field.
Where to see the BLS RABe 525 (Nina)
Specific viewpoints with lighting times, coordinates and an honest verdict on whether the trip is worth it.
Related guides from the blog
