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1 photo from Wikimedia Commons · credits & licences
- 1. 28.09.13 Niš 621.106 (10101060594): Phil Richards from London, UK· CC BY-SA 2.0
what is it?
Designed and built for heavy shunting work, the ŽS series 621 is a series of Czech-made diesel-electric shunting locomotives which is active on Serbian Railways.
who runs it
base stats
Bars compare against all trains: 600 km/h (maglev), 1,700 seats; power, weight and number built on a log scale up to 20 MW, 1,000 t and 20,000 built.
fun facts
- First built 24 years ago, in 2002.
- 392 kW is about 5 family cars (~85 kW each) flat out.
- Weighs about as much as 6 African elephants (~6 t each).
- 9.5 m long: about 2 cars parked nose to tail.
diesel locomotive: A diesel engine on board drives the wheels, usually through a generator (diesel-electric).
spec sheet
- built
- 2002–2006
- number built
- —
- kind
- Diesel-electric
- traction
- diesel
- origin
- 🇷🇸 Serbia
- builders
- CZ LOKO
- operators
- Serbian Railways, Kolubara Mining Basin
- top speed
- 80 km/h
- power
- 392 kW
- gauge
- 1,435 mm standard gauge
- wheel arrangement
- 0-4-0DE / 4wDE
- length
- 9.5 m
- weight
- 36 t
- nicknames
- "Žutka", "Osica" and "Trafika"
From the Wikipedia infobox and Wikidata. Blank means the sources don't say.
Sources: Wikidata Q17009997, Wikipedia: ŽS series 621 (CC BY-SA 4.0).Updated 2026-10-25.