© trainspo.comSAAS DSF BDe 4/4
Built by SIG, SWS, BBC, SAAS, MFO
Overview of the SAAS DSF BDe 4/4
Explore the DSF BDe 4/4, an iconic electric multiple unit (EMU) built in 1966 by a consortium of renowned manufacturers including SIG, SWS, BBC, SAAS, and MFO. This versatile locomotive boasts a capacity of 48 seats and can reach a top speed of 100 km/h, making it a reliable workhorse.
With an impressive power output of 1100 kW and a tractive effort of 137 kN, the DSF BDe 4/4 is designed for efficient operation. Its standard gauge of 1435 mm and a car length of 24.3 meters allow it to navigate various railway lines with ease.
Originally operated by Draisinen Sammlung Fricktal, this electric train later served with Schweizerische Südostbahn AG under the designation SOB BDe 556, solidifying its place in Swiss railway history.
SAAS DSF BDe 4/4 technical specifications
| Value | Imperial / US | |
|---|---|---|
| Built by | SIG, SWS, BBC, SAAS, MFO · 1966 | |
| Top speed | 100 km/h62 mph | |
| Power output | 1,100 kW1,475 hp | |
| Tractive effort | 137 kN30,799 lbf | |
| Track gauge | 1,435 mmStandard gauge4 ft 8½ in | |
| Capacity | 48 seats | |
| Car length | 24.3 m79 ft 9 in |
Operators of the SAAS DSF BDe 4/4
Railway companies that have operated the DSF BDe 4/4, with the class designation used by each of them.
| Operator | Class | Country |
|---|---|---|
| Draisinen Sammlung Fricktal | DSF BDe 4/4 | Switzerland |
| Schweizerische Südostbahn AG | SOB BDe 556 | Switzerland |
SAAS DSF BDe 4/4 photos
Photos © their respective authors, shared on trainspo.com. They may show liveries or variants that differ from the specifications above.
More electric multiple units from SAAS

SAAS
ABDe 4/4
Electric multiple unit
100 km/h

SAAS
MThB ABDe 4/4
Electric multiple unit
1965 · 100 km/h

SAAS
LEB Be 4/4 I
Electric multiple unit
1966 · 80 km/h

SAAS
RBDe 566 I
Electric multiple unit
1973–1977 · 125 km/h

SAAS
RABDe 510
Electric multiple unit
1965–1967 · 125 km/h

SAAS
ABDe 8/8
Electric multiple unit
1968 · 70 km/h

SAAS
MGB ABDeh 8/8
Electric multiple unit
1965 · 55 km/h

SAAS
SBB RABDe 8/16
Electric multiple unit
1976 · 125 km/h
Similar electric multiple units from other manufacturers

Alstom
474.3
Electric multiple unit
100 km/h

BBC
HHA DT3
Electric multiple unit
1966–1971

Frichs
DSB MM
Electric multiple unit
1966–1975

Kinki Sharyo
SCCT 900
Electric multiple unit
100 km/h

Siemens
DB 484
Electric multiple unit
100 km/h

BBC
ET 170
Electric multiple unit
1967–1970 · 100 km/h

Alna
Hankyu 3300
Electric multiple unit
1967–1979

Alstom
TCDD E8000
Electric multiple unit
90 km/h · 1,100 kW