#4597
NIR 450 Class
🇬🇧 United Kingdom ·built by British Rail Engineering Limited· from 1985· Northern Irish diesel multiple unit
what is it?
The 450 Class is a type of diesel multiple unit (DMU) passenger train formerly used by Northern Ireland Railways. They were nicknamed 'Thumpers' and 'Castles' (or Castle Class) by rail enthusiasts.
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 41 years ago, in 1985.
- Seats 184: 4 full city buses (~50 seats each).
- Served for 32 years (1985–2017).
multiple unit: A self-propelled train: motors are spread under the passenger cars, so no separate locomotive.
spec sheet
- built
- 1985
- in service from
- 1985
- retired
- 2017
- status
- retired
- number built
- 9
- kind
- multiple unit
- traction
- diesel
- origin
- 🇬🇧 United Kingdom
- builders
- British Rail Engineering Limited
- operators
- NI Railways
- top speed
- 121 km/h
- power
- —
- gauge
- 1,600 mm Irish broad gauge
- formation
- 3-car sets (DM-T-DT)
- capacity
- 184 passengers
From the Wikipedia infobox and Wikidata. Blank means the sources don't say.
Sources: Wikidata Q6954367, Wikipedia: NIR 450 Class (CC BY-SA 4.0).Updated 2026-10-25.