Originally numbered A1 to A60. The last examples of this class were taken out of service in 1995. Two are now preserved by the Irish Traction Group, 003 and 039. Locomotive 015 has been preserved as a static exhibit at Moyasta Junction on the West Clare Railway. The shell of locomotive 055 is preserved as a static exhibit in the Hell's Kitchen Bar and Restaurant, Castlerea, Co. Roscommon.

Engine: Sulzer 6LDA28 of 960 hp

Originally numbered B101 – B112. The last examples of this class were taken out of service in 1978. The only surviving example 103 is preserved by the Irish Traction Group.

Original Engine: Sulzer 6LDA28 of 960 hp

Originally numbered 1100 and 1101. The last example of this class was taken out of service in 1975. The only surviving example 113 is stored at Inchicore Works, Dublin.

Original Engine: General Motors 8-645E of 1100 hp

Some locomotives subsequently re-engined with General Motors 8-B645E of 1100 hp or General Motors 8-567CR of 1100 hp

Original Engine: Crossley ESTV8 of 550 hp

These locomotives were re-built and re-engined at Inchicore Works between 1969 and 1980 with General Motors 8-B645E engines of 1100 hp.

Originally numbered C201 – C234, then B201 – B234. The last examples of this class were taken out of service in 1986. Two are now preserved by the Irish Traction Group, 226 and 231. Locomotives 216, 218, 227, 228, 230 and 234 were sold to Northern Ireland Railways in 1986 and became 104 – 109.

The last examples of this class were taken out of service in 1979. All were cut up between 1977 and 1984 and none survive today.

The last examples of this class were taken out of service in 1983. Two are now preserved at the Downpatrick & Co. Down Railway, 421 and 432, whilst 428 is privately preserved at Dunsandle, Co. Galway.

The last examples of this class were taken out of service in 1977. Three are now preserved by the Irish Traction Group, 611, 616 and 617, whilst 613 is privately preserved at the Downpatrick & Co. Down Railway.

Originally numbered 800, then K800. This locomotive was taken out of service in 1974, and was then sold in 1976 to a scrap dealer in Co. Galway. The locomotive was then used to power a car crushing plant before suffering a seized engine in 1977. The remains of this locomotive were eventually cut up in 1999.

The last example of this class was taken out of service in 1989. All three of these locomotives were originally preserved by the Irish Traction Group, but 2  and 3  were subsequently sold for re-use in Sri Lanka in 2005, whilst locomotive 1 was sold in January 2010 to Beaver Power Limited, Merthyr Tydfil, South Wales, for possible industrial use.

The last example of this class was taken out of service in 2002. Two locomotives, 101 and 102, were originally preserved by the Railway Preservation Society of Ireland at Whitehead, Co. Antrim, but 101 was subsequently scrapped for spare parts in January 2010.

Engine: General Motors 8-B645E of 1100 hp.

Originally numbered 216, 218, 227, 228, 230 and 234 by CIE. Purchased by Northern Ireland Railways in 1986 and renumbered 104 - 109, the last remaining example was withdrawn from NIR service in 1995. The only surviving example, 106, was initially preserved as a static exhibit at Cahirciveen, Co. Kerry, and was erroneously numbered C202. This locomotive was subsequently purchased by a preservation group based in the Waterford area, and has now been moved to a private site in Waterford. 

Full details of Irish Locomotives, Multiple Units and Rolling stock can be found in the book “Irish Railways, Traction and Travel (4^th edition)”, published by the Irish Traction Group.