SBB Re 420

Specifications
Specifications
Configuration:;
• AAR	B-B
• UIC	Bo′Bo′
Gauge	1,435 mm / 4 ft 8+1⁄2 in standard gauge
Length	15,410 mm (50 ft 6+3⁄4 in) over buffers
Width	2,970 mm (9 ft 8+7⁄8 in)
Height	4,500 mm (14 ft 9+1⁄8 in)
Loco weight	80–85 tonnes (79–84 long tons; 88–94 short tons)
Electric system/s	15 kV 16+2⁄3 Hz AC Catenary
Current pickup(s)	Pantograph
Loco brake	Air and Dynamic

Type and origin
Type and origin
Power type	Electric
Builder	SLM Winterthur; BBC Baden; MFO Zürich; SAAS Geneva
Build date	1964, 1967–1985
Total produced	277 Re 4/4II; 26 Re 4/4III

SBB Re 420
SBB Re 420
	Re 420 together with an Re 620
Power type
Type and origin
Power type	Electric
Builder	SLM Winterthur; BBC Baden; MFO Zürich; SAAS Geneva
Build date	1964, 1967–1985
Total produced	277 Re 4/4II; 26 Re 4/4III
Configuration:;
Specifications
Configuration:;
• AAR	B-B
• UIC	Bo′Bo′
Gauge	1,435 mm / 4 ft 8+1⁄2 in standard gauge
Length	15,410 mm (50 ft 6+3⁄4 in) over buffers
Width	2,970 mm (9 ft 8+7⁄8 in)
Height	4,500 mm (14 ft 9+1⁄8 in)
Loco weight	80–85 tonnes (79–84 long tons; 88–94 short tons)
Electric system/s	15 kV 16+2⁄3 Hz AC Catenary
Current pickup(s)	Pantograph
Loco brake	Air and Dynamic
Maximum speed
Performance figures
Maximum speed	140 km/h (87 mph) Re 4/4II; 125 km/h (78 mph) Re 4/4III
Power output	4,700 kW (6,300 hp)
Tractive effort	Continuous: 150 kN (34,000 lbf) @105 km/h (65 mph),; Maximum: 255 kN (57,000 lbf)
Brakeforce	135 kN (30,000 lbf)
Operators
Career
Operators	SBB, BLS, SOB, RM, MBC, MThB, Travys, CR, WRS
Class	Re 4/4II, later Re 420 and Re 421; Re 4/4III, later Re 430 (Re 436)
Numbers	Re 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)
Nicknames	Bo'Bo'
Disposition	see tables
	Source

The Re 420, originally and still widely called Re 4/4^II, 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) 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.

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

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

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