SR Class 4Lav

class of 4-car outer suburban EMU

The Southern Railway (SR) gave the designation 4Lav to the electric multiple units built to work the semi-fast services on the route between London and Brighton. None of these units survived long enough in British Rail ownership to be allocated a TOPS class.

SR Class 4Lav
In service1932-1969
ManufacturerSouthern Railway
Formationpower car + 2 trailer cars + power car
Operator(s)Southern Railway and
British Railways
Prime mover(s)4 x 275 hp traction motors
total 1,100 hp (821 kW)
Braking system(s)Air