SBB-CFF-FFS RBe 540

SBB-CFF-FFS RBe 540

Modernized RBe 540 multiple unit

Type and origin Power type Electric Builder SIG Neuhausen BBC Baden MFO Zürich Build date 1959, 1963–1966 Total produced 82 Rebuild date 1993–1998 (R4)

Specifications Configuration: ​  • UIC Bo'Bo' Gauge 1,435 mm (4 ft 8 1⁄2 in) standard gauge Length 23,700 mm (77.8 ft) Loco weight 68 t (67 long tons; 75 short tons) after R4: 72 t (71 long tons; 79 short tons) Prototypes: 64 t (63 long tons; 71 short tons)

Performance figures Maximum speed 125 km/h (78 mph) Power output 1,988 kW (2,666 hp) Tractive effort 89 kN (20,000 lbf) (continuous) 167 kN (38,000 lbf) (maximum)

Career Numbers 1401–1482 Preserved 78

Starting in 1959, the SBB-CFF-FFS put motored coaches of the type RBe 540 (old designation RBe 4/4) into service for push-pull operation on the Gotthard line. As a consequence, they had much power at their disposal, even more than the Re 4/4 ^I locomotives, a regenerative brake, cabs on both ends with doors to passenger carriages as well as multiple-unit train control (SBB Vst III), which is compatible with the Bt and NPZ control cars, as well as the locomotives of the Re 420 series (Re 4/4^II = Re 420, Re 421, Re 4/4^III), Re 4/4 ^IV and Re 620. They originally had 64 seats, 32 smoking and 32 non-smoking, and were painted in ordinary SBB-CFF-FFS green.

The first six prototypes, each costing six million francs, were delivered 1959 and 1960, and first shown to the press at 24 May 1959. The prototypes had some issues which were fixed until the series production. The series units were four tonnes heavier, and 76 units were ordered, which were put into service between 1963 and 1966.

Most of the technical equipment is installed below the passenger compartment, leading to a higher than usual floor level than ordinary carriages had. Some of the equipment and the toilet is installed in the middle of the multiple unit, instead of passenger compartments. The conventional transformer technology with its rough step controller (28 running notches) together with occasional heavy vibrations led to the nickname "Schüttelbecher" ("shaker").

Starting in 1992, all units (except for the prototypes) were modernized to fit the needs of S-Bahn operations. This included cloth seats instead of the plastic ones and some other interior modifications, NPZ livery, automatic doors for conductor-less operation as well as the installation of an additional thyristor controller, for which a passenger compartment had to be given up. The latter improved running smoothness considerably, especially when using the regenerative brake. At the same time, they were renumbered to the UIC scheme, which led to some inconsistencies due to vehicles already retired from service:

The prototypes, which never got UIC numbers, got the nicknames "Seetal-RBe 4/4", due to their special warning livery for services on the dangerous Seetalbahn.