Alstom Prima by Rocky-Rail

Published: 2017-07-15 - By: Alain LM
Last updated on: 2021-01-01
visibility: Public
NEW Manufacturer and Body Style in TroveStar N-scale Model Trains database.


Rocky-Rail is a small Belgian brand producing model trains of high quality, using sustainable materials, like metal and photo-etched nickel silver.
From 2017 on, Rocky-Rail scale N range will be continued by REE Modèles.

Rocky-Rail released between 2014 and 2016 several variants of the Alstom Prima, namely BB 27000, BB 37000 and BB 75000.
These models have a metal frame with a 5-pole motor with flywheel and are finely detailed. They are fitted with white and red lights changing with the direction of travel. They accept NEM 651 / NMRA 6-pin DCC decoders.

For an in-depth review, please visit: Locgeek


Alstom Prima is a family of modular diesel and electric locomotives. For the French market, the Prima has been delivered in electric version as SNCF BB 27000, BB 27300, and BB 37000, and in diesel version as BB 75000. One unit of an experimental quadruple voltage BB 47000 was built, but SNCF did not order the series.

As per SNCF new numbering adopted in 1999:
- Prefix "4" of the road number indicates assignment to freight service.
- Prefix "6" of the road number indicates assignment to Infra - Maintenance of Way

The BB 27000 is a series of 4-axle Bo'Bo'electric locomotives commissioned by the French state railway SNCF. Ordered in two batches in 1998 and 2002, they were delivered from November 2001 to February 2006. A total of 180 units have been produced. They have been designed for freight operations to renew the ageing CC 7000, CC 7100, BB 8100 and BB 12000.

Power output: 5,725 hp (4,200 kW)
Dual voltage: 25kV 50Hz AC / 1500V DC (2 pantographs)

The BB 37000 is a series of 4-axle Bo'Bo'electric locomotives commissioned by the French state railway SNCF. Ordered in 2002, they were delivered from April 2004 to December 2006. A total of 60 units have been produced. They have been designed for freight operations to renew notably the ageing BB 20200. This is the "international" version of the BB 27000, able to operate in Germany and Switzerland.

Power output: 5,725 hp (4,200 kW)
Triple voltage: 25kV 50Hz AC / 1500V DC / 15kV 16-⅔Hz AC (3 pantographs)

The BB 75000 is a series of 4-axle Bo'Bo'diesel-electric locomotives commissioned by the French state railway SNCF. Ordered in March 2004, they were delivered starting in November 2006. A total of 300 units have been produced. They have been designed for freight operations to renew the ageing CC 72000, BB 67300, BB 67400 and A1A-A1A 68000. It is also classified as Prima DE-30-BA-C in Germany.
This locomotive is the result of a collaboration between Alstom and Siemens. The internal electrical components are similar to those found in the Siemens 'EuroRunner' Rh.2016 made for ÖBB (Austrian federal railway), and the bodyshell, bogies and other equipment being of the Prima type made by Alstom, derived from the SNCF BB 27000.

Power output: 2,700 hp (2,000 kW) and 3,200 hp (2,400 kW)

There are actually 3 sub-series:
- BB 75000 - (75001 to 75099) - with engine MTU 16V 4000 R41 - 2,700 hp (2,000 kW)
- BB 75100 - (75101 to 75133) - with engine MTU 16V 4000 R41 - 2,700 hp (2,000 kW) - able to operate in Germany and Benelux
- BB 75400 - (75401 to 75568) - with engine MTU 16V 4000 R43L - 3,200 hp (2,400 kW)

Click here for the full list of Rocky-Rail models in TroveStar database.

The above description has been created specifically for TroveStar N scale database by Alain LM, as summary in English of the following French publications:
Source: Le Train.
Encyclopédie du matériel moteur SNCF. Tome 7: Locomotives, locomoteurs et locotracteurs Diesel (2e partie). ISSN 1296-5537. Olivier Constant. Septembre 2010.
Encyclopédie du matériel moteur SNCF. Tome 9: Locomotives bicourant, bifréquences et polytension (2e partie). ISSN 1296-5537. Olivier Constant. Septembre 2012.

About the Author

Alain is an avid n-scale modeler who collects North American rolling stock with a focus on Canadian railroads and BNSF and all its predecessors. He occasionally purchases other models from European railroads. He has been using DCC since it's been available and successfully mixes North American and European DCC equipment. Alain regularly contributes to the TroveStar N Scale Model Trains Database (code, data and blogs), as well as to JMRI. By day, Alain works for a world-class railway signaling firm as an automation and real-time industrial computing engineer. This Frenchman lives near Paris.