Class 375 Electrostar

The Class 375 is part of the huge Electrostar family of EMUs built in the early 2000s to replace the likes of the Class 411 4-CEP on ex-Southern third rail DC routes [1]. Most of the Class 375 fleet is third-rail only though the 375/6 sub-class also has provision for AC overhead electric collection. Twenty eight trainsets have been converted to the Class 377/3 sub-class.

Information
Number built: 438 (10 3- and 102 4-car sets)
Built: 1999-2004
Builder: Adtranz/Bombardier
Engine: 6 or 4 Adtranz traction motors (750v DC third rail / 25kV AC OHLE)
Power: 375/3 : 1, 341 hp (1, 000 kW)
Other subclasses : 2, 012hp (1, 500kW)
Formation: 375/3 : Driving Motor Composite Open (DMCO)+Trailer Standard
Open (TSO)+DMCO
375/6 : DMCO+Motor Standard Open (MSO)+Pantograph
Trailer Standard Open (PTSO)+DMCO
Other subclasses : DMCO+MSO+TSO+DMCO

There are 5 sub-classes. As mentioned above the 375/6 is dual-voltage with all others being DC third rail only, the 375/3 are 3-car sets with the other sub-classes all being 4-cars though space has been retained for a pantograph if needed in future.


The 375/9 are high-density sets for outer suburban services with the 375/7 and 375/8 being officially designated as express stock. All serve with Southeastern and forms the backbone of their fleet. Southern also did operate the type at one stage though these 375s were converted to 377s.
Southeastern 375 702 (and 376 023) at Sevenoaks

375 304 heads through Peckham Rye

375 815 at London Victoria

375 817 at Sevenoaks

375 603 at London Victoria

[1] Colin J Marsden, DMU and EMU Recognition Guide (Ian Allan, 2013) p. 283