MFO Ae 4/7

Built by BBC, MFO, SAAS, SLM

Top speed

100 km/h

62 mph

Power output

2,300 kW

3,084 hp

Length

16.76 m

55 ft 0 in

Track gauge

1,435 mm

Standard gauge

Years built

1927–1934

127 units

Overview of the MFO Ae 4/7

Explore the Ae 4/7, a significant electric locomotive built for the Swiss Federal Railways (SBB) between 1927 and 1934 by leading manufacturers BBC, MFO, SAAS, and SLM. This robust machine, with a track gauge of 1435 mm, was a workhorse of Swiss rail transport.

Boasting a top speed of 100 km/h and a power output of 2300 kW, the Ae 4/7 was designed to handle challenging Swiss routes with its reliable 15 kV AC 16.7 Hz electrical system. Its substantial length of 16.76 meters speaks to its imposing presence on the rails.

Refurbished in 1998, the Ae 4/7 stands as a testament to the enduring engineering and operational capabilities of early 20th-century railway technology. Discover the legacy and distinctive design of this iconic Swiss locomotive.

MFO Ae 4/7 technical specifications

	Value	Imperial / US
Built by	BBC, MFO, SAAS, SLM · 1927–1934127 units
Refurbished	1998
Top speed	100 km/h62 mph	62 mph
Power output	2,300 kW3,084 hp	3,084 hp
Electric systems	15 kV AC 16.7 Hz
Track gauge	1,435 mmStandard gauge4 ft 8½ in	4 ft 8½ in
Length	16.76 m55 ft 0 in	55 ft 0 in
Width	2.95 m9 ft 8 in	9 ft 8 in
Height	3.8 m12 ft 6 in	12 ft 6 in