CIE 301 Class

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D301 Class (generally simply known as "D" class)
Type and origin
Power type Diesel-electric
Builder CIÉ Inchicore Works
Build date 1947–1948
Total produced 5
 • Whyte 0-6-0 DE
 • UIC Co
Gauge 5 ft 3 in (1,600 mm)
Wheel diameter 4 ft 0 in (1.219 m)
Length 8.84 m (29 ft 0 in)
Loco weight 53.8 tonnes (53.0 long tons; 59.3 short tons)
Prime mover Mirrlees TLDT6 diesel
Traction motors Brush Traction, 2 off
Performance figures
Maximum speed 25 mph (40 km/h)
Power output 487 hp (363 kW)
Tractive effort Starting: 107 kN (24,000 lbf)
Operators Córas Iompair Éireann
Class J1A; later D
Numbers Originally 1000-1004, renumbered D301-D305
Withdrawn 1960–1976
Disposition All scrapped 1977

The Córas Iompair Éireann 301 Class locomotives were the first diesel locomotives used on the CIÉ network, this class of 5 being built between 1947 and 1948 by the company for shunting use, particularly in the railway yards on Dublin's North Wall. They were a six coupled (0-6-0 wheel arrangement) locomotive, fitted with a Mirrlees TLDT6 engine of 487 horsepower (363 kW) with diesel-electric transmission via two Brush traction motors. Unusually, they lacked train vacuum brakes, although air brakes were provided for the locomotive itself.[1]

They were initially numbered 1000-1004 in the steam locomotive number series, but were subsequently renumbered D301-D305 in order. The locomotives were used on yard pilot and transfer freight duties, although number 1000 hauled a freight train from Dublin to Cork during trials.[1] Two locomotives were stored from 1960 and the rest had followed by 1972, though officially they remained in stock until 1976. All five were scrapped in 1977.


The D Class is not available in either RTR or kit form. However, the British Rail Class 08 can be used as a close approximation.[2]



  • Renehan, Dan (February 1981). "The Class E Diesel Shunters of CIE". Journal of the Irish Railway Record Society. 14 (84): 171–81. 
  • Strickland, David C. (1982). Locomotive Directory, every single one there has ever been. Camberley, Surrey: Diesel & Electric Group. p. 164. ISBN 0-906375-10-X. 

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