NIR 450 Class

The 450 Class is a type of diesel multiple unit (DMU) passenger train formerly used by Northern Ireland Railways. They were affectionately nicknamed 'Thumpers' and 'Castles' (also known as the Castle Class) by rail enthusiasts.

Northern Ireland Railways 450 Class
8458 departing City Hospital in 2009.
In service1985–2012
ManufacturerBritish Rail Engineering Limited
Family nameBR Second Generation (Mark 2 and Mark 3)
Entered service1985–1987
Scrapped2012–2017
Number built9 sets
Number scrapped8 sets
Formation3-car sets (DM-T-DT)
Fleet numbersOriginally: 451–459,
Now: 8451–8459
Capacity184 seats
OperatorsNorthern Ireland Railways
Lines servedAt time of withdrawal:
Belfast-Larne
Coleraine-Portrush
Formerly:
Belfast-Bangor
Belfast-Newry
Specifications
Maximum speed75 mph (121 km/h)
Prime mover(s)English Electric 4SRKT
Safety system(s)AWS, TPWS
Track gauge1,600 mm (5 ft 3 in)
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