Leasing company CBRail was the second customer for Bombardier ordering diesel-electric Traxx locomotives back in 2006. The first unit, designated 285 001, was completed in July 2007 and transported immeditaley to the Czech Republic, for trials at the test center of Velim. A the end of of 2007 it also completed adhesive tests at the Rubelandbahn in Germany. In January 2008, it was offcically handed over to CBRail. With the delivery of the second one, 285 102, a second sub serie was created; Unlike the 285.0 series, the 285.1 are not equipped with 'Zugsammelschiene' which is required for hauling passenger trains, as it is used to provide power for heating and lighting for example. However, if desired, the ZS-equipment can be added quickly, but CBRail consideres it not neccessary by delivery, as presumably, most machines will be used for freight services only.
On the Innotrans 2008 international railway fair, CBRail 285 110 represented the Traxx family, together with ATC 186 209. On that moment only five out of ten machines were actually on hire to a rail operator.