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#4062

NIR 101 Class

🇬🇧 United Kingdom ·built by Hunslet Engine Company· from 1970· nicknamed Hunslets

NIR 101 Class, photo 1 of 7
1/7 Max Batten· CC BY-SA 3.0

what is it?

The NIR 101 Class are three diesel-electric locomotives formerly operated by Northern Ireland Railways (NIR). With the return to the working of the Enterprise service from Belfast to Dublin with coaching stock instead of diesel railcar sets, NIR found itself with no suitable main line diesel locomotives. The 101 Class (DL) became the answer to this problem, working in conjunction with newly acquired British Rail Mark 2 coaches.

who runs it

base stats

  • speed 129 km/htop speed
  • power 1 MWpower output
  • built 3made in total

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 56 years ago, in 1970.
  • 1 MW is about 12 family cars (~85 kW each) flat out.

diesel locomotive: A diesel engine on board drives the wheels, usually through a generator (diesel-electric).

spec sheet

built
1970
retired
1999
status
preserved
number built
3
kind
Diesel-electric
traction
diesel
origin
🇬🇧 United Kingdom
builders
Hunslet Engine Company
operators
NI Railways
top speed
129 km/h
power
1 MW
gauge
1,600 mm Irish broad gauge
wheel arrangement
Bo′Bo′

From the Wikipedia infobox and Wikidata. Blank means the sources don't say.

Sources: Wikidata Q6954364, Wikipedia: NIR 101 Class (CC BY-SA 4.0).Updated 2026-10-25.

stan runge 704880d source