[2] It is capable of operating on a 1,500 V DC or 25 kV 50 Hz AC electricity supply.
A total of 211 trainsets have been built by Canadian conglomerate Bombardier at its factory in Crespin (near Valenciennes, France) since 2005.
The inter-carriage passages have wide, open gangway connections, limiting bottlenecking.
The Z 27500 from Lorraine region can be operated as a multiple-unit control with the Diesel variant (X 76500 [fr]), specifically equipped with a command to raise the pantograph.
[7] SNCF has announced on 18 March 2021, that 40% of the TER (French commuter rail) fleet will be renovated in the next 10 years, included Z 27500 Class.