Key takeaways
- InterPanter is the long-distance offshoot of the Škoda Panter family – the RegioPanter is the regional-services counterpart.
- Two class numbers, one vehicle concept: 660 stands for the three-part version, 661 for the five-part version.
- Dual-system capable – necessary because Czechia uses DC in the north and AC in the south.
- 160 km/h is the design speed; the line decides how fast it actually runs.
- Risk of confusion exists mainly with the RegioPanter, which follows the same design family.
Contents
Fact file
| Vehicle type | Electric multiple unit for long-distance services |
|---|---|
| Manufacturer | Škoda Transportation |
| Classes | 660 as the three-part version, 661 as the five-part version |
| Electrification systems | 3 kV DC and 25 kV / 50 Hz AC |
| Maximum speed | 160 km/h |
| Vehicle family | Panter family, related to the RegioPanter used in regional services |
| Country code | UIC country code 54 for Czechia |
Identifying features
Is this really the class in front of you?
- A through multiple unit with no separate locomotive
- Modern, angular flat-sided nose with a large windscreen – not the rounded Pendolino shape
- Class marking 660 for the three-part version, 661 for the five-part version
- Pantographs for two different systems on the roof
- Long-distance seating – recognisable from the interior fit-out and the train category
- UIC number with country code 54 for Czechia
Updated: August 2026 – A modern, through multiple unit with an angular flat-sided front, working a long-distance service in Czechia: this is very likely an InterPanter from Škoda, listed as Class 660 or 661. This page shows you how to tell it apart from the related RegioPanter, why it has to handle two electrification systems, and what to watch for when photographing it.
Keep multiple units straight
Class, unit, location and date – with Traintrack the sighting is logged in seconds.
What is the InterPanter?
The InterPanter is an electric long-distance multiple unit from Škoda Transportation. In Czechia it’s listed under two classes: 660 for the three-part version and 661 for the five-part version. Both are dual-system capable – 3 kV DC and 25 kV / 50 Hz AC – and designed for 160 km/h.
The name says it all: the InterPanter belongs to the Panter family, with which Škoda covers an entire vehicle generation. While the RegioPanter serves regional and local services, the InterPanter is tailored to longer long-distance runs – with matching interior fit-out and seating layout.
The Panter family and its class numbers
Anyone learning Czech multiple units should look at the family as a whole. Škoda Transportation has built several variants under the Panter name that share a design language and technical basis but cover different roles.
| Variant | Role | Classification |
|---|---|---|
| InterPanter, Class 660 | Long-distance | Three-part version |
| InterPanter, Class 661 | Long-distance | Five-part version |
| RegioPanter, Class 440 | Regional | Electric multiple unit of the same family |
| RegioPanter Diesel | Regional | Diesel variant for non-electrified lines |
This split explains one of the most common questions: why does a train that looks practically identical get several class numbers? Because the Czech system has worked purely numerically since 1988 and represents the technical state, not the design relationship. Different train lengths and drive concepts mean different classes. How this plays out in detail is shown by the comparison with the Class 440 RegioPanter.
The family name isn't the class number
Marketing names like InterPanter, RegioPanter or CityElefant describe vehicle families and product ideas. For an unambiguous match, the class number counts. When in doubt, note both – the name helps with research, the number with documentation.
Dual-system: no luxury in Czechia
The mixed electrification system is the most important key to understanding Czech vehicles. The northern part of the country is electrified with 3 kV DC, the southern part with 25 kV AC at 50 Hz. Where the two systems meet, there’s a system-changeover point.
For a long-distance train, that has a hard consequence: without dual-system capability, it could only serve part of the country. That’s exactly why the InterPanter was designed for both systems from the start – it’s not an optional extra, but the precondition for its role.
For you when spotting, that works the other way round too: if a train crosses a system-changeover point without stopping and without a change of vehicle, it must be multi-system capable. That’s an observation you can make without any number at all.
The third system common in Central Europe – 15 kV at 16.7 Hz, as used in Germany and Austria – is not handled by the InterPanter. For it, the journey therefore ends at the state border, while triple-system vehicles can continue. So anyone looking for Czech trains in Germany has to look specifically for the vehicles equipped for the German system – and there are markedly fewer of those than the Czech fleet as a whole would suggest.
A second point concerns running time. Dual-system capability saves not just the change of vehicle, but also the stop that would be needed for it. On a continuous north–south route through Czechia, that’s a noticeable time saving – and the actual economic reason the extra technical effort pays off.
How to recognise the InterPanter
Recognise it as a multiple unit
No separate locomotive nose, but a through unit. That rules out every locomotive-hauled long-distance service.
Assess the nose shape
Modern, flat-sided and drawn rather angular, with a large windscreen. The slender, strongly rounded Pendolino front looks distinctly different.
Count the sections
Three sections point to Class 660, five sections to Class 661. That's the fastest way to the right class number.
Factor in the train category
A long-distance service points to the InterPanter, a regional service more towards the RegioPanter from the same design family.
How to reliably work out the train category and the matching train number is explained in the article on finding the train number. The basic order for identifying unfamiliar vehicles is covered in the guide to identifying classes.
See which multiple units are being reported right now
Vehicle deployment in long-distance services changes with the timetable – current sightings save you a wasted trip.
Spotting and photography
Modern multiple units are more demanding to photograph than they seem: large smooth surfaces, little structure, tall windows that reflect easily.
- Choose a three-quarter angle. Head-on, the flat-sided nose looks flat; an angle of 30 to 45 degrees adds depth.
- Plan for reflections. Large glazed areas reflect sky and buildings. A slightly different viewpoint usually solves this.
- Handle length deliberately. Five-part units rarely fit fully into frame – go for either the whole thing or a clearly deliberate crop.
- Photograph the class marking too. Without the number, it stays unclear whether you saw a 660 or a 661.
A word on documenting multiple units in general: unlike locomotives, there are often several relevant numbers here – that of the unit and those of the individual cars. For your own collection, the unit number is usually the sensible reference point, since multiple units run as fixed sets. Also note whether the train was running alone or double-headed with a second unit; that later explains why one observation differs from another, and it’s information that rarely comes through from the photo alone.
The basic photographic technique – panning, focal plane, exposure – is covered in detail in the guide taking good photos of trains. And as always: platforms, public paths and bridges are permitted vantage points, while track areas, operational railway land and storage sidings are not.
Common mix-ups
It's likely an InterPanter if …
- a through multiple unit is working a long-distance service
- the nose looks modern and flat-sided with angular lines
- the train has three or five sections
- the class marking reads 660 or 661
Look more closely if …
- you only see the nose – the RegioPanter and InterPanter share the same design language
- the train is working a service that doesn't match the expected category
- a special livery has changed its familiar appearance
It's not an InterPanter if …
- a separate locomotive is hauling the train
- the nose is slender and strongly rounded – then the Pendolino comes into question
- it's a double-deck multiple unit
The three closest candidates for confusion are the Class 440 RegioPanter from the same family, the seven-part Class 680 Pendolino with its rounded front, and the double-deck Class 471 CityElefant, which already stands apart because of its height.
Conclusion
The InterPanter is a good example of how modern vehicle families work: one platform, several variants, several class numbers. Once you’ve sorted out the Panter family, you’ll place Czech multiple units much faster – and know that the family name is useful for research, while the class number is what counts for documentation.
In short
A modern dual-system multiple unit for long-distance services, three-part as Class 660 and five-part as Class 661: that's the InterPanter. Angular flat-sided front, a 160 km/h design speed – and clearly distinguishable from the rounded Pendolino.
All your multiple-unit sightings in one place
Class, unit, location and date in one app – so it stays clear whether you saw a 660 or a 661.
Summary
- The InterPanter is Škoda's answer to the need for modern long-distance multiple units on the mixed Czech electrification network.
- The split into Classes 660 and 661 follows train length, not a technical break.
- Nose shape, number of car sections and the class marking are enough for identification.
- Areas of operation and train categories change with timetable years and should be checked for the current situation.
Frequently asked questions
What is the InterPanter?
The InterPanter is an electric long-distance multiple unit from Škoda Transportation. In Czechia it's listed under two classes: 660 for the three-part version and 661 for the five-part version. Both handle 3 kV DC and 25 kV / 50 Hz AC and are designed for 160 km/h.
What's the difference between the InterPanter and the RegioPanter?
Both belong to Škoda's Panter family and share a design language and much of their technical basis. The RegioPanter is tailored to regional and local services, the InterPanter to long-distance runs – shown above all in the interior fit-out, seating layout and the train category operated. The class marking reliably separates the two.
Why are there two class numbers for one train type?
Because the Czech class system has represented technical states since 1988. The three-part and five-part versions are different vehicles in terms of the system, so they get their own class numbers: 660 and 661. The same logic explains many Czech class pairs that look confusing at first glance.
Why does the train need to handle two electrification systems?
Because Czechia has a mixed electrification system: 3 kV DC in the north, 25 kV / 50 Hz AC in the south. A long-distance train meant to serve both parts of the country has to cross the system boundary without stopping and without a change of vehicle. For single-system vehicles, the journey ends there.
Does the InterPanter really run at 160 km/h?
160 km/h is the vehicle's design speed. The actual speed is set by the line via its maximum permitted speed, signalling and timetable. A vehicle is never faster than the infrastructure it runs on – a distinction worth applying to every top-speed figure you read.
How do I recognise the train from the outside?
By its modern, angular flat-sided nose with a large windscreen, and by the fact that it's a through multiple unit with no separate locomotive. The rounded, slender front of the Czech Pendolino looks distinctly different. The class marking gives the final confirmation.
Can I see the InterPanter in Germany?
Not easily under its own power: the train is designed for the Czech DC and AC systems, not the German 15 kV at 16.7 Hz. Other vehicles are used for cross-border services into Saxony. Areas of operation do change, though, so it's worth checking the current situation.
Log your sighting of the CD InterPanter (Skoda 660)
Date, location and vehicle number logged in seconds – and visible to the community.
Related classes
ČD Class 440 (RegioPanter)
Class 440 is Škoda's modern regional multiple unit for the Czech Republic. How to read the class number, recognise the RegioPanter in the field – and tell it apart from its relatives.
High-speedČD Class 680 (Pendolino)
Class 680 is Czechia's Pendolino: seven seven-car tilting trains built for three electrification systems. Here's how to recognise them and what tilting technology really delivers in everyday service.
EMUČD Class 471 (CityElefant)
The CityElefant is the double-deck multiple unit of Czech suburban services. Where the nickname comes from, how the unit made of 471, 071 and 971 is built, and how to recognise it.
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 CD InterPanter (Skoda 660)
Specific viewpoints with lighting times, coordinates and an honest verdict on whether the trip is worth it.
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