Back SBB Re 4/4 II ALS SBB Re 4/4 II German SBB-CFF-FFS Re 420 Spanish Re 4/4 II French SBB Re 4/4 II sorozat Hungarian Locomotiva FFS Re 4/4 II Italian スイス国鉄Re420形電気機関車 Japanese SBB Re 4/4 II Dutch Re 420 Polish

SBB Re 420

SBB Re 420
Re 420 together with an Re 620
Type and origin
Power typeElectric
BuilderSLM Winterthur
BBC Baden
MFO Zürich
SAAS Geneva
Build date1964, 1967–1985
Total produced277 Re 4/4II
26 Re 4/4III
Specifications
Configuration:
​
 • AARB-B
 • UICBo′Bo′
Gauge1,435 mm / 4 ft 8+1⁄2 in standard gauge
Length15,410 mm (50 ft 6+3⁄4 in) over buffers
Width2,970 mm (9 ft 8+7⁄8 in)
Height4,500 mm (14 ft 9+1⁄8 in)
Loco weight80–85 tonnes (79–84 long tons; 88–94 short tons)
Electric system/s15 kV  16+2⁄3 Hz AC Catenary
Current pickup(s)Pantograph
Loco brakeAir and Dynamic
Performance figures
Maximum speed140 km/h (87 mph) Re 4/4II
125 km/h (78 mph) Re 4/4III
Power output4,700 kW (6,300 hp)
Tractive effortContinuous: 150 kN (34,000 lbf) @105 km/h (65 mph),
Maximum: 255 kN (57,000 lbf)
Brakeforce135 kN (30,000 lbf)
Career
OperatorsSBB, BLS, SOB, RM, MBC, MThB, Travys, CR, WRS
ClassRe 4/4II, later Re 420 and Re 421
Re 4/4III, later Re 430 (Re 436)
NumbersRe 4/4II: 11101–11349, 11371–11397 (later SBB 420 101–349, 421 371–397, partly BLS, MBC, MThB, Travys and SOB); BLS 420 501–512
Re 4/4III: 11350–11370 (later SBB 430 350–370), WRS 430 111, 112, 114, 115 (previously RM/CR 436 111–115)
NicknamesBo'Bo'[1]
Dispositionsee tables
Source[2]

The Re 420, originally and still widely called Re 4/4II,[3] are a series of versatile standard gauge electric locomotives of Swiss Federal Railways (SBB CFF FFS), but are also used by BLS AG (BLS Re 420.5)[4] and private companies (previously also by the Swiss Südostbahn, SOB). They were produced over a period of 21 years, from 1964 to 1985, and are currently used mainly for freight operations but still also for some push-pull passenger train services. It is the largest series of locomotives of Swiss Federal Railways and they are the most common type of locomotive in Switzerland.[3][5][6]

The Re 420 LION are refurbished Re 420 engines used for peak-hour commuter rail services of Zurich S-Bahn.[7]

The Re 421 is an upgraded version built for cross-border operations.[8]

The Re 430 (Re 436 of private companies), originally known as the Re 4/4III, are a derivative of the Re 420, modified for higher traction but lower speed.[9]

  1. ^ "Bo' Bo' - die Schweizer Loklegende Re 4/4" [Bo' Bo' - the legendary Swiss locomotive Re 4/4] (in German). SWR. 2 February 2024. Retrieved 1 January 2025.
  2. ^ Meyer, Karl (2 April 1970). "Die Lokomotiven Serie Re 4/4II und Re 4/4III der SBB" [The SBB Re 4/4II and Re 4/4III series locomotives]. Schweizerische Bauzeitung (in German). No. 14. Zurich: Verlags-AG der akademischen technischen Vereine, Zürich. p. 311-318. Retrieved 18 October 2024.
  3. ^ a b "SBB Re 420 – Re 4/4II" (in German). juergs.ch. Retrieved 28 December 2024.
  4. ^ "BLS Re 420.5" (in German). juergs.ch. Retrieved 28 December 2024.
  5. ^ "SBB / BLS Re 4/4 II und III" (in German). lokifahrer.ch. Retrieved 30 December 2024.
  6. ^ "Das Ende der wichtigsten Lokomotive der SBB naht [The end of the most important locomotive of SBB is coming]" (in German). NZZ. 19 February 2024. Retrieved 30 December 2024.
  7. ^ Cite error: The named reference LION was invoked but never defined (see the help page).
  8. ^ "SBB Re 421" (in German). juergs.ch. Retrieved 28 December 2024.
  9. ^ "SBB Re 430 – Re 4/4 III" (in German). juergs.ch. Retrieved 28 December 2024.
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