Charter trains

Ae 4/4 – historic locomotive

The locomotives delivered between 1944 and 1954 were the first modern four-axle locomotives with bogies that were able to achieve an output of 1,000 hp per axle. In this sense, the Ae 4/4 locomotives were the precursors of all modern four-axle high-performance locomotives.

Ae 415 251 Designation formerly: Ae 4/4
1 Quantity
251 Number
1944 Put into service

Rail vehicle details technical data

15.6 m Length
80 t Weight
2,945 kW Power output
125 km/h Maximum speed
First-class carriage EWI A Can be combined with

History historic rail vehicle

The locomotives delivered by SLM and BBC between 1944 and 1954 were the first modern four-axle locomotives with bogies that were able to achieve an output of 1,000 hp per axle. In this sense, the Ae 4/4 locomotives were the precursors of all modern four-axle high-performance locomotives.

The Ae 4/4 locomotives were modernised over the years as follows:

Replacement of step switches
Replacement of main oil circuit breakers with main air blast circuit breakers
Replacement of driver's brake valves
Doubling of the output of the electric brake. The removal of a pantograph doubled the braking resistances on the roof and thus braking power as well
Replacement of leaf springs for the suspension system with rubber springs
Replacement of ventilation louvers with jet nozzle grilles
Adhesion improvements through the use of a control cable powered by electricity from the traction motor – this put additional weight on the leading axles