© trainspo.comAnsaldo E636
Built by Breda, OM, Marelli, SNOS, Fiat, TIBB, Ansaldo
Overview of the Ansaldo E636
Discover the iconic E636 electric locomotive, a significant piece of Italian railway history.
Built by various Italian manufacturers between 1940 and 1962 for the Italian State Railways (FS), this robust machine was designed for heavy-duty service.
Featuring a distinctive Bo'Bo'Bo' axle arrangement, the E636 was capable of reaching speeds of up to 120 km/h and delivering a powerful output of 2100 kW.
With a substantial length of 18.25 meters and a weight of 101 tons, it provided an impressive tractive effort of 113 kN, making it a reliable workhorse on the nation's rail network.
Operating on a 3 kV DC electrical system, the E636 represents a notable era in railway engineering and a testament to Italian industrial capability.
Ansaldo E636 technical specifications
| Value | Imperial / US | |
|---|---|---|
| Series | E636 | |
| Built by | Breda, OM, Marelli, SNOS, Fiat, TIBB, Ansaldo · 1940–1962 | |
| Top speed | 120 km/h75 mph | |
| Power output | 2,100 kW2,816 hp | |
| Tractive effort | 113 kN25,403 lbf | |
| Electric systems |
| |
| Track gauge | 1,435 mmStandard gauge4 ft 8½ in | |
| UIC axle arrangement | Bo'Bo'Bo' | |
| Length | 18.25 m59 ft 11 in | |
| Width | 3 m9 ft 10 in | |
| Height | 3.38 m11 ft 1 in | |
| Weight | 101 t222,667 lb |
Operators of the Ansaldo E636
Railway companies that have operated the E636, with the class designation used by each of them.
| Operator | Class | Country |
|---|---|---|
| Italian State Railways | FS E636 | Italy |
Ansaldo E636 photos
Photos © their respective authors, shared on trainspo.com. They may show liveries or variants that differ from the specifications above.
More electric locomotives from Ansaldo

Ansaldo
E636.284
Electric locomotive
1940–1962 · 110 km/h

Ansaldo
E424
Electric locomotive
1943–1951 · 120 km/h

Ansaldo
E428
Electric locomotive
1934–1943 · 100 km/h

Ansaldo
E428.226
Electric locomotive
130 km/h · 2,800 kW

Ansaldo
E640
Electric locomotive
1960–1968 · 120 km/h

Ansaldo
E431
Electric locomotive
1922–1925 · 100 km/h

Ansaldo
HZ 1061.0
Electric locomotive
1960–1967 · 120 km/h

Ansaldo
E551
Electric locomotive
1921–1925 · 50 km/h
Similar electric locomotives from other manufacturers

AEG
DRG E94
Electric locomotive
1940–1956

AEG
El 8
Electric locomotive
1940–1949 · 110 km/h

Cegielski
303Eb
Electric locomotive
125 km/h · 2,000 kW

Kinami
ED20
Electric locomotive
1938

ASEA
SJ F
Electric locomotive
1942–1949 · 135 km/h

BBC
Re 4/4 I
Electric locomotive
1946–1951 · 125 km/h

AEG
DR E 04 / 204 / DB 104
Electric locomotive
1932–1935 · 130 km/h

Alstom
BB 8100
Electric locomotive
1948–1955 · 105 km/h