DSB Litra EA / EB

Updated: August 2026 – A box-shaped, four-axle electric locomotive in front of a locomotive-hauled passenger train, with a letter combination instead of a class number on its side: welcome to the Danish Litra system. The DSB Litra EA is the country’s classic main-line electric locomotive. This page explains the designation system, the identifying features, and why the Danish traction power system matters to observers from Germany.

What’s behind DSB Litra EA / EB?

The Litra EA is a four-axle electric locomotive of DSB (Danske Statsbaner) for main-line service. It was procured as part of the electrification of the Danish main lines and runs on three-phase drive technology from the same development line that was introduced in Germany with Class 120. Its wheel arrangement is Bo’Bo’ – four axles in two bogies, all powered.

The designation EB belongs to the same Litra scheme for electric traction vehicles. However, markedly less confirmed public detail is available for this variant. We therefore deliberately give no figures on numbers built, build years or power ratings – when in doubt, the marking on the vehicle decides.

Understanding the Danish Litra system

Anyone coming from Germany instinctively looks for a class number. In Denmark there isn’t one. Instead, DSB works with Litra, the Danish term for a vehicle’s class designation. The system is pleasingly logical:

• The first letter states the propulsion type. E stands for electric traction vehicles, M for combustion-engined, i.e. diesel, vehicles.
• The second letter distinguishes the build within that group: EA and EG for the electric locomotives, ME for the diesel locomotives, MF and MG for the diesel multiple units.
• The Copenhagen S-train has its own letter combinations, because it uses its own power system.

With this one rule you can read a large part of the Danish fleet. If the marking starts with E, an electric locomotive is in front of you; if it starts with M, a diesel vehicle. How to work through such designation systems systematically instead of getting stuck on individual features is shown by the guide to identifying rolling-stock classes.

Why Denmark has so much diesel and so little overhead line

One point surprises many observers: by European standards, Denmark has a high proportion of unelectrified lines. That explains several peculiarities of the Danish vehicle world at once.

First, the strong diesel-multiple-unit tradition. Where there’s no overhead line, you need self-contained vehicles. Denmark has therefore developed pronounced diesel multiple-unit families over the decades – the best known being the DSB IC3 with its rubber-nose front, which forms a walk-through gangway when coupled. Heavy diesel locomotives such as the DSB Litra ME also belong to this picture.

Second, 25 kV instead of 15 kV. The electrified main lines in the network run by Banedanmark operate on 25 kV / 50 Hz AC. Germany, Austria and Switzerland, by contrast, use 15 kV / 16.7 Hz. A pure 25 kV locomotive therefore can’t simply cross the border – in practice, its run ends at the border station of Padborg.

Third, the need for multi-system vehicles. Through trains between Denmark and Germany need locomotives that master both systems. That’s exactly the role filled by the DSB Litra EG in freight service – a good reason to look at both builds together.

Fourth, the Copenhagen S-train as a special case. It operates with its own DC system and is therefore technically separated from the rest of the network. For observers that’s practical: a vehicle running in the Copenhagen S-train network automatically belongs to its own vehicle family and carries its own Litra codes accordingly. Both worlds meet at Copenhagen Central Station.

Taken together, this produces a picture that differs markedly from Germany: a manageable number of electric locomotives, but pronounced diesel multiple-unit families and a self-contained local network in the capital. Anyone wanting to place Danish vehicles should therefore first ask which of these three areas they’re currently in.

Observation location	Chance of a sighting	Why
Danish hub stations with long-distance services	high	locomotive changes, train formation, longer standing times
Electrified main lines	high	scheduled deployment area of electric locomotives
Unelectrified regional lines	ruled out	diesel multiple units run there
German border stations	very low	pure 25 kV vehicles end at the system boundary
Depots and stabling sidings	–	private property, viewable only from outside

Spotting and photography

Locomotives are photographed differently from multiple units. They stand alone more often, get shunted, and are often clearly visible at hub stations for several minutes. In Fredericia the main Danish routes converge – a good place for it.

The basics of composition and exposure are covered in the guide to taking good photos of trains. How the twelve-digit vehicle number is structured and what the country code 86 means is explained in the article on the UIC number and its check digit.

Common mix-ups

Verdict

The Litra EA is a good entry point into the Danish rail world: four axles, box shape, an E in the marking – that’s all you need for a basic identification. More important than the locomotive itself, in the end, is the system behind it. Once you’ve understood Litra, you’ll place Danish vehicles in seconds from then on, whether electric or diesel-powered.