Class 452

Updated: August 2026 – Some class numbers come your way every day, others almost never. Class 452 falls into the second group: a number from the block of electric power cars and intermediate cars, for which no broad, verified everyday knowledge exists. Rather than claiming figures, this page explains the numbering system behind it – and how you can reliably place a vehicle using it.

What’s behind Class 452?

Class 452 sits in the German class block 4xx, assigned to electric power cars, intermediate cars and driving trailers. The corresponding UIC type code is 94 – the first two digits of every twelve-digit vehicle number, standing Europe-wide for electric multiple units and railcars.

That settles the vehicle type, but not much more. There’s no broadly documented everyday fleet behind this number whose years built, quantities or power figures could be reliably stated here. This is exactly where many sources do damage: inventing plausible-sounding figures, or copying them without checking, turns a gap in knowledge into an error nobody uncovers later. This page deliberately avoids such claims.

What genuinely helps instead is knowing the system. Once you understand how German class numbers are structured and how they relate to the international UIC number, you can place any vehicle – even one you’ve never read anything about before.

One unit, several class numbers

The most common stumbling block with multiple units is expecting a train to carry exactly one number. That’s not how it works – and systematically so.

You’ll see this principle on every widely used regional multiple unit, for example the Class 425 / 426 / 435, where several numbers belong to one vehicle family. The general approach to identification is described in the guide to identifying classes.

Class, type code, train number: three figures, three meanings

Keeping these three cleanly apart cuts down on mistakes for every class – rare ones especially.

Figure	Where it is	What it describes	Does it change?
UIC type code (94)	first two digits of the vehicle number	vehicle type: electric multiple unit	no
Class (452)	part of the vehicle number, on the vehicle	car type within the national fleet	rarely
Serial number	part of the vehicle number	the individual unit	no
Train number	timetable, displays, operating documents	the specific journey	daily
Line designation	displays on the vehicle	the service brand	with every timetable

The last two rows are why a sighting without a vehicle number is worth little: line and train number describe what was run, not with what. Where to find the train number and how it relates to the vehicle number is explained in Finding the train number; the structure of the twelve-digit number is described in the guide to the UIC number.

Observation features that always work

Even without prior knowledge of a specific class, you can describe an electric traction vehicle in a structured way. These features are verifiable in the field and useful for any later identification:

• Type of current collection. A roof-mounted pantograph means overhead line; side-mounted contact shoes mean DC power from a conductor rail. This alone separates entire vehicle groups.
• Number of car sections. Always count up to the next pair of driving cabs, not across the whole train.
• Design of the gangways. A shared bogie between two car sections means articulated construction; two separate bogies mean conventional construction.
• Car height. Fully single-deck, fully double-deck, or mixed – three clearly distinguishable designs.
• Door layout. Many wide doors suggest S-Bahn service, fewer narrower ones suggest regional service with longer journeys.

These five observations cost you less than a minute and turn a vague memory into an evaluable note.

The advantage of this method only shows up later. If in six months’ time you want to know what you saw back then, remembering a colour won’t help you – a note like “four car sections, pantograph, one bogie per gangway” will. It rules out entire vehicle groups within seconds and can be cross-checked against any reference work. And it still works even if the number has gone blurry in the photo. That’s exactly why experienced observers routinely note structural features as well, even when they believe they already know the class at the moment of the sighting. Related numbers from the same block can be found on the pages for Class 450 and Class 455.

Safety at the track

Rare vehicles tempt people to bend the rules. That’s exactly the moment when accidents happen.

• Stay behind the safety line. It marks the area an entering vehicle claims along with its slipstream – even at low speed.
• Never enter the track area. Tracks, operational installations, storage sidings and depots are operational railway land. No photo motif justifies entering, and this page deliberately gives no tips on how to.
• Side-mounted conductor rails are lethal. In DC networks, the rail beside the track is permanently live, regardless of whether a train is running.
• Don’t flash towards the driving cab. Dazzling the driver is a direct hazard to operations.

Common mix-ups

Conclusion

Class 452 isn’t a page with a data sheet – and that’s deliberate. What’s certain is the framework: type code 94, the numbering block for electric power cars and intermediate cars, a sequentially allocated scheme in which neighbouring numbers say nothing about similarity. Anyone who knows this framework and observes cleanly in the field gets further with any class than someone collecting second-hand figures.