DB Class 420
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| Type and origin | |
|---|---|
| Power type | Electric |
| Builder | MAN, WMD, LHB, MBB, O&K, DUEWAG, WU |
| Build date | 1969 - 1997 |
| Total produced | 480 units |
| Specifications | |
|---|---|
| AAR wheel arr. | Bo'Bo'+Bo'Bo'+Bo'Bo' |
| UIC class | 420/421 |
| Gauge | 1,435 mm (4 ft 8 1⁄2 in) standard gauge |
| Wheel diameter | 850 mm (33.46 in) |
| Wheelbase | 2,500 mm (98.43 in) (bogie) |
| Length | 67.4 m (221 ft 2 in) (23.3 m + 20.8 m + 23.3 m or 76 ft 5 in + 68 ft 3 in + 76 ft 5 in) |
| Width | 3,080 mm (10 ft 1.26 in) |
| Axle load | 15 to 24 t (15 to 24 long tons; 17 to 26 short tons) depending on series |
| Loco weight | 129 to 138 t (127 to 136 long tons; 142 to 152 short tons) depending on series |
| Electric system(s) |
Sweden: 15 kV 16 2⁄3 Hz AC catenary |
| Current collection | Pantograph |
| Performance figures | |
|---|---|
| Maximum speed | 120 km/h (75 mph) (reachable within 40 s) |
| Power output | 12 × 200 kW (270 hp) = 2,400 kW (3,200 hp) |
| Acceleration | 0.9 m/s2 (3.0 ft/s2) |
| Deceleration | 0.9 m/s2 (3.0 ft/s2) regular, 0.95 m/s2 (3.1 ft/s2) (emergency stop) |
The Baureihe 420 is a light-weight commuter electric multiple unit developed for the S-Bahn networks in Germany and was originally commissioned by the Deutsche Bundesbahn for the Munich S-Bahn, Stuttgart S-Bahn and Frankfurt S-Bahn networks. It could seat 194 second class, 17 or 33 first class, depending on series. The pivot distance was 16.5 m (54 ft) in cab cars and 14 m (46 ft) in trailer, with a floor height of about 1 m (39.37 in). It ran at 15 kV, 16⅔ Hz, with a tractive effort speed of 72 km/h (20 m/s; 45 mph) and acceleration of 0.9 m/s2 (3.0 ft/s2) or 2.0 mph/s (3.2 km/(h·s)).
It was built from 1969 onwards in several series, later changing the construction from steel to aluminium, making the cars more lightweight and able to carry a greater payload.
It has largely been replaced in said cities by its successor, the Class 423, but some units have been shipped to and some have been transferred to the Rhine-Ruhr S-Bahn network. In Sweden the fifteen units received designation X420 serving on the , and were in service from 2003 until the arrival of the first new X60-series in 2005.
Additionally, in the network of Frankfurt S-Bahn, all units of the class 420 have been retired in November 2014 and replaced by the new class 430. Remaining services are some weekday services on the S2 between Dachau and Altomünster of the Munich S-Bahn, some additional peak hour services on several lines of the Stuttgart S-Bahn. Additionally, several units are in operation on some rush-hour services of the Rhine-Ruhr S-Bahn around Düsseldorf since December 2014 and also Cologne since December 2015. Today, all trains of this class have been repainted in the DB-typical "traffic red" (verkehrsrot).
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Wikipedia