SNCF Class BB 25500

Specifications
Specifications
Configuration:;
• UIC	B′B′
Gauge	1,435 mm (4 ft 8+1⁄2 in) standard gauge
Driver dia.	1,100 mm (3 ft 7 in)
Length	25501–25544: 14.7 m (48 ft 3 in); 25545–25587: 14.94 m (49 ft 0 in); 25588–25694: 15.57 m (51 ft 1 in);
Loco weight	25501–25544: 79 t (174,000 lb); 25545–25555: 80 t (180,000 lb); 25556–25694: 77 t (170,000 lb);
Electric system/s	Overhead line:; 25 kV 50 Hz AC; 1,500 V DC;
Current pickup	Pantograph
Traction motors	2×TAB 660B1 monomotors

Type and origin
Type and origin
Power type	Electric
Builder	Alsthom
Build date	1964–1976
Total produced	194

Class BB 25500
Class BB 25500
	SNCF BB 25563 at Geneva in 1976
Power type
Type and origin
Power type	Electric
Builder	Alsthom
Build date	1964–1976
Total produced	194
Configuration:;
Specifications
Configuration:;
• UIC	B′B′
Gauge	1,435 mm (4 ft 8+1⁄2 in) standard gauge
Driver dia.	1,100 mm (3 ft 7 in)
Length	25501–25544: 14.7 m (48 ft 3 in); 25545–25587: 14.94 m (49 ft 0 in); 25588–25694: 15.57 m (51 ft 1 in);
Loco weight	25501–25544: 79 t (174,000 lb); 25545–25555: 80 t (180,000 lb); 25556–25694: 77 t (170,000 lb);
Electric system/s	Overhead line:; 25 kV 50 Hz AC; 1,500 V DC;
Current pickup	Pantograph
Traction motors	2×TAB 660B1 monomotors
Maximum speed
Performance figures
Maximum speed	100 or 140 km/h (62 or 87 mph)
Power output	2,940 kW (3,940 hp)
Tractive effort	330 kN (74,200 lbf) or ; 197 kN (44,300 lbf)
Operators
Career
Operators	SNCF TER/Transilien
Class	BB 25500
Number in class	TER: 102; Transilien: 8
Locale	TER: Bourgogne, Bretagne, Franche-Comté, PACA, Rhône-Alpes;; Transilien:Paris Montparnasse - Dreux/Mantes la Jolie
First run	4 June 1964
Last run	13 January 2021

SNCF's BB 25500 class are part of a series of electric locomotives built by Alsthom. They are the dual system version of the BB 17000 (AC) and BB 8500 (DC) locomotives (17000+8500=25500). They are fitted with monomotor bogies with two different gear ratios. This allows them to have either increased tractive effort for freight, or a higher top speed. This makes them suitable for both freight and passenger trains.

They were built in three distinct batches leading to detail differences. They remain in use as mixed traffic locomotives, mostly with TER and Transilien.