Their cab was similar to that of the New South Wales 422 class locomotives that had recently been built.

After a few teething problems, the class settled down and were employed hauling grain and gypsum services.

[2][3] With the splitting up of Australian Railroad Group, two passed to Aurizon in February 2006 and four to Genesee & Wyoming Australia in June 2006.

[6] The owner of the remaining three NJs, GWA was rebranded to One Rail Australia in February 2020 when G&W sold their share of the company.

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