SBB-CFF-FFS Ae 4/7

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SBB-CFF-FFS Ae 4/7
SBB Ae 4/7
Type and origin Power type Electric Builder Swiss Locomotive and Machine Works (SLM), Brown, Boveri & Cie. (BBC), Maschinenfabrik Oerlikon (MFO), Société Anonyme des Ateliers de Sécheron (SAAS) Build date 1927–1934 Total produced 127
Specifications Configuration: ​  • AAR 2-D-1  • UIC 2′Do1′ Gauge 1,435 mm (4 ft 8+1⁄2 in) Length 16,760 mm (55 ft 0 in) over buffers Width 2,950 mm (9 ft 8 in) Height 3,800 mm (12 ft 6 in) Loco weight 118 to 123 tonnes (116 to 121 long tons; 130 to 136 short tons) Electric system/s 15 kV  16+2⁄3 Hz AC Catenary Current pickup(s) Pantograph Transmission Buchli drive
Performance figures Maximum speed 100 km/h (62 mph) Power output 2,300 kW (3,080 hp) Tractive effort Continuous: 127 kN (29,000 lbf) at 65 km/h (40 mph)
Career Operators SBB-CFF-FFS Numbers 10901–11027 Withdrawn 1983–1996 Restored 1998 (2 for Rail4Chem) Disposition 22 extant, remainder scrapped

The Ae 4/7 was a universal locomotive of the Swiss Federal Railways, employing the so-called Buchli drive.

Because of this drive construction, invented by Jakob Buchli, it was one of the longest-lasting Swiss locomotives. It was in regular use for 70 years, from the 1920s into the 1990s, hauling freight and passenger trains all over Switzerland.