Z 23700 class electric multiple units of the CdF de l'Etat, France, 1930s

The first "inox" or stainless steel cars in France, the series of 20 of these Z 23700 class were put into service by the réseau de l'État upon the electrification of the line Paris - Le Mans in 1500 Volts DC.

They were reclassified as Z 3700 by the SNCF when this was created at the beginning of 1938. The series was mainly based at the depot of  Montrouge. One example, Z 3714, is preserved at the Cité du train in Mulhouse.

Data
Axle arrangement: Bo-Bo-Bo, continuous output: 880 kW, length: 40.71 metres, tare weight: 78 tonnes, Maximum speed: 130 km/h