WAGR Na class (diesel)

The WAGR Na class were a total of 4 diesel-electric locomotives operated by the Western Australian Government Railways (trading as Westrail) from 1982 to 1997.

The Na class was a designation assigned to standard N class locos which had the Westinghouse air brake system installed from 1982 to 1983.

They operated on mineral traffic in the southeast of Western Australia and began to be withdrawn alongside the N class from the early to mid-1990s. Two were converted to Nb class locos in early 1994. The first Na class to be scrapped was class leader No. 1871 in 1994. The last Na class No. 1874 was withdrawn and scrapped in 2014.