OM E551

Built by Ansaldo, Breda, CGE, OM, Reggiane, SNOS, TIBB, Vickers Terni

Top speed

50 km/h

31 mph

Power output

2,000 kW

2,682 hp

Weight

75 t

165,347 lb

Length

11.01 m

36 ft 1 in

Track gauge

1,435 mm

Standard gauge

Years built

1921–1925

183 units

Overview of the OM E551

Discover the robust FS E551, a versatile electric locomotive that served the Italian State Railways with distinction.

Built between 1921 and 1925 by a consortium of renowned manufacturers including Ansaldo and Breda, this powerful machine was designed for heavy-duty operations.

With a top speed of 50 km/h and a substantial weight of 75 tons, the E551 was engineered for reliability on the standard gauge 1435 mm tracks.

Its impressive 2000 kW power output, utilizing a 3.6 kV AC 16.7 Hz electric system, made it a formidable presence on Italian railway lines.

Experience the engineering heritage of this classic locomotive.

OM E551 technical specifications

	Value	Imperial / US
Built by	Ansaldo, Breda, CGE, OM, Reggiane, SNOS, TIBB, Vickers Terni · 1921–1925183 units
Top speed	50 km/h31 mph	31 mph
Power output	2,000 kW2,682 hp	2,682 hp
Electric systems	3.6 kV AC 16.7 Hz (2000 kW)
Track gauge	1,435 mmStandard gauge4 ft 8½ in	4 ft 8½ in
UIC axle arrangement	E
Length	11.01 m36 ft 1 in	36 ft 1 in
Width	2.85 m9 ft 4 in	9 ft 4 in
Height	3.74 m12 ft 3 in	12 ft 3 in
Weight	75 t165,347 lb	165,347 lb