The PN Class is based off of EDI’s GT42CUAC model locomotive (which is the same model as QR’s 4000 Class). A number of features are different due to copyrights held by QR on the 4000 class, however the differences seem to be skin-deep. Being members of the most powerful class of narrow gauge locomotives in Australia if not the world, they have no trouble hauling a standard length (750m) freight on their own.

The PNs can be seen anywhere between Moolabin and Cairns Woree Terminal.