The Ee 3/3IV, the fourth iteration of the Ee 3/3 series, is a class of ten shunting locomotives specially designed for use as pilots at border stations. The complicated equipment needed for four different electrical systems required a higher and wider body in front of and behind the cab and a reduction in power. Nevertheless, thanks to a modern crank drive, a maximum speed of 60 km/h can be attained.

SBB-CFF-FFS Ee 3/3 IV
Ee 3/3 IV in Lausanne
Type and origin
Power typeElectric
BuilderSwiss Locomotive and Machine Works
Société Anonyme des Ateliers de Sécheron
Build date1962-1963
Total produced10
Specifications
Configuration:
 • Whyte0-6-0OE
 • UICC
Gauge1,435 mm (4 ft 8+12 in)
Length:
 • Over buffers10.02 m (32 ft 10 in)
Electric system/s15 kV  16.7 Hz AC
25 kV AC
3,000 V DC
1,500 V DC
Performance figures
Maximum speed60 km/h (37 mph)
Power output:
 • 1 hour390 kW (520 hp) (at 24 km/h (15 mph))
Tractive effort:
 • Starting118 kN (27,000 lbf)
 • 1 hour58 kN (13,000 lbf)
Career
OperatorsSwiss Federal Railways
Numbers16551–16560 (pre-1994)
Ee 934 551–560 (post-1994)

History

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The Ee 3/3IV are used in French and Italian border stations, mostly at Geneva, on similar duty to the previous versions. All locomotives were equipped with a multiple drive in 1994, similar to the Ee 3/3II. During the upgrade the locomotives received new service numbers (Ee 934).

Due to their ability to run on 1,500 V DC system, they were occasionally used to haul passenger trains between La Plaine and Geneva when the SBB-CFF-FFS BDe 4/4 II were being repaired.

See also

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References

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