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The EDI/EMD 4100 Class was designed to continue to meet increasing demand for coal haulage. AS more locomotives of the 4000 Class type were ordered and an initial order for 15 units was placed during 2006, with a further order for another 15 units placed during 2007. Due to several design changes, these locomotives have been allocated as the 4100 class, to distinguish them from the 4000 class. Changes include a slightly different, Tier 2 emissions compliant engine, Mitsubishi traction motors rather than the 4000 Class' Siemens traction motors, and a change from the ICE computer control system to the FIRE computer system.
The ACN Class are members of the 4100 Class working in Western Australia.
Tag your ACN Class photos using the Flickr tag loco
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