These trains operate in on regional commuter routes north of Sydney Australia. The RHKA 25-1B/1 HVAC units for metro trains were adapted by Noske Kaeser Rail & Vehicle New Zealand specially from a much larger dual circuit unit, to minimise development cost for a very short production run.
Use the form opposite to get in touch with Noske-Kaeser Rail & Vehicle directly to discuss any requirements you might have.