# SBB Re 420

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.

## Operations

As of 2024, the four-axle Re 420 are mainly used for freight services, where they are sometimes paired with the six-axle Re 620 (Re 6/6), especially in mountainous regions. This pairing is referred to as Re 10/10. Current freight operators using the Re 420 are SBB Cargo and Widmer Rail Service AG (WRS).
Before the wide use of electric multiple units, the Re 420 was frequently used for passenger services, either as a single engine or in pairs. It is still in use for some passenger train services, for example for some peak-hour commuter rail services of Zurich S-Bahn, the EuroCity Transalpin or the tourist-oriented Gotthard Panorama Express.
As of 2024, most standard gauge push-pull operations of passenger trains in Switzerland are run with Re 460 locomotives (respectively Re 450 on the Zurich S-Bahn network).
* ↑ both locomotives are Re class, so the couple is Re class; 10/10 means that they overall have 10 driven axles out of 10

### Former Swiss Express

Between 22 May 1975 and 28 May 1982, Swiss Federal Railways ran trainsets composed of Re 4/4$^{II}$ engines and Einheitswagen III (lit. 'standard carriage III') as Swiss Express [de] on the Geneva—Lausanne—Bern—Zurich—St. Gallen(—Rorschach) line. For these services, locomotives Re 4/4$^{II}$ 11103, 11106, 11108, 11109, 11112, 11113, 11133 and 11141 had to be adapted accordingly, as the wagons were delivered with automatic couplings. The locomotives of the later series (from 11220, but without 11236–11238) were already prepared at the factory to accept the UIC coupling; However, since these were not yet available at the time, some Re 420 locomotives had to be converted specifically for the Swiss Express. They received an extended shock beam, new couplings and the appropriate paint in the Swiss Express colors orange-stone gray-orange. They also bear the then newly introduced SBB logo (the Swiss cross with two arrows) instead of the typical Swiss coat of arms on their fronts. The length over the buffers was then 15,570 mm (613 in) instead of the usual 15,410 mm (607 in). The automatic coupling protruded over the buffers, resulting in a total length of 16,030 mm (631 in). With the adaptation of the Einheitswagen III for shuttle train operation, the ends of the compositions were given normal screw couplings, and subsequently the locomotives too.
On the occasion of major overhauls, locomotives № 11112, 11113 and 11133 were painted red; № 11103 and 11106 were taken over by the BLS and painted in their typical silver-blue-green livery. The 11141 retained the Swiss Express livery and was parked at the beginning of October 2007 and has been used as a heating locomotive ever since. After a general inspection in Bellinzona, the engine has been back in use since autumn 2009 in the red livery of the series, but keeping the SBB logo at the fronts. It was later sold to DSF Koblenz which restored its original Swiss Express look. Locomotive 11108 has been parked since 25 September 2020 due to expired deadlines and is now in the SBB Historic Depot in Olten. Re 4/4$^{II}$ 11133 is an ICN shunting locomotive in the Yverdon-les-Bains main workshop and has an additional beam with automatic coupling on one side instead of the screw coupling and buffer.
As of 2025, locomotive 11109 (420 109-1) is the last one with the original Swiss Express scheme still in operation for passenger train services. Built in 1966, it is currently also the oldest operating Re 420 of Swiss Federal Railways.

### Zurich S-Bahn (Re 420 LION)

Between 2011 and 2016, 30 Re 420 locomotives of the passenger division (Re 4/4$^{II}$ 11201–11230) were refurbished for peak-hour services on the Zurich S-Bahn network (renumbered Re 420 201–230). Each set is composed of six or ten DPZ double-deck cars plus one Re 420 LION locomotive at each end (head and tail configuration). The acronym LION stands for Lifting, Integration, Optimierung, Neugestaltung (in German, lit. 'facelift, integration, optimization, reconfiguration'). These trainsets are currently in use as S19, S21 or S23 services, among others.

### Cross-border operations (Re 421)

Six Re 4/4$^{II}$ (vehicle numbers 11196–11201; later 11195–11200) were equipped with a wider pantograph wiper in order to conform with Deutsche Bahn (DB) and Austrian Federal Railways (ÖBB) standards, which subsequently allowed these units to pull EuroCity (EC) trains over the borders to Bregenz (Austria) and Lindau (Germany). These workings were covered by the last series, engines 11371–11397, which were rebuilt for use in Germany and Austria, not only with a different pantograph but also with PZB/Indusi and other systems necessary for use abroad. These locomotives are classified Re 421 and are lettered for SBB Cargo but they also pulled passenger trains to Bregenz and Lindau (however, 11382 was never converted as it was already withdrawn with fire damage). Some Re 421 were later bought by Widmer Rail Services AG (WRS).
With the December 2020 timetable change, in conjunction with the reopening of Lindau-Reutin station and electrification of the line to Munich, services between Zürich HB and Munich Central Station were no longer hauled by locomotives, but instead New Pendolino EMUs of SBB started operations on this line as EC/ECE.

## Re 430 subseries

When the former Südostbahn (SOB) had the opportunity to buy one of the first batch of 50 Re 4/4$^{II}$ locomotives before delivery, it had the gear modified for higher traction and lower speed for the steep routes on their network. This locomotive was delivered as SOB Re 4/4 41, which later became SBB Re 4/4$^{III}$ 11350 (or Re 430 350-9 with the new classification scheme).
Based on the SOB experience, the SBB ordered a batch of 20 Re 4/4$^{III}$ in 1969 for use on the Gotthard route. Three of those locomotives were sold to the SOB in the 1980s and renumbered Re 4/4 42–44. These locomotives were returned to the SBB between 1996 and 1998 in exchange for the four prototype Re 4/4$^{IV}$, which, renamed as SOB Re 446, have push-pulled coaches of the Voralpen Express, along with the SOB Re 456 until 2019 (since then Südostbahn uses Traverso EMUs).
The predecessors of the Regionalverkehr Mittelland (EBT, VHB and SMB) ordered a total of five Re 4/4$^{III}$, Re 436 111–113, 141 and 181. These locomotives were later renumbered (111–115) and worked for Crossrail AG until that company was dissolved in 2017. Engines numbered 111, 112, 114 and 115 were then sold to Widmer Rail Services AG (WRS) and renamed Re 430. Locomotive Re 436 113 was involved in an accident in 2010 and was scrapped in September 2017.

## Stock
### Re 4/4$^{II}$ (Re 420, Re 421)

The 267 Re 4/4$^{II}$ locomotives were delivered in seven series: 11101–11106 (prototypes), 11107–11155, 11156–11215, 11216–11254, 11255–11304, 11305–11349 and 11371–11397. In an effort to unify the numbering of their motive power and in UIC compliance, Swiss Federal Railways changed the class name of the Re 4/4$^{II}$ to Re 420 and, accordingly, also the numbering of their locomotives was adjusted.
On 1 September 1999, locomotives numbered Re 4/4$^{II}$ 11101–11155, 11181, 11191–11270 and 11299–11304 were assigned to the SBB passenger division, and 11156–11171, 11173–11180, 11182–11190, 11271–11298, 11305–11311, 11313–11349 and 11371–11397 to the freight division (becoming SBB Cargo afterwards). At the end of 2002, locomotive 11172$^{II}$ (ex-MThB) joined the passenger fleet. One year later, 11225–11264 changed to SBB Cargo. At the end of 2004, vehicle numbers 11225–11230 were changed to 11265–11270, and six locomotives were sold to BLS (see list). One year later, locomotives 11102–11107 followed. They were replaced in the passenger fleet by 11156–11159, 11161 and 11164 from SBB Cargo.
In total, 96 locomotives are owned by the passenger division, six by BLS (Re 420 501–506, ex SBB Re 4/4$^{II}$ 11110, 11117, 11119, 11123, 11137 and 11142) and all others by SBB Cargo. Several locomotives have been withdrawn from service and scrapped. The following is an inventory list of all Re 4/4$^{II}$ with further information:
List of Re 4/4$^{II}$ locomotives :
| Engine № | Colour | Withdrawn | Scrapped | Notes |
| 11101 | Red | May 2014 | April 2015 | SBB CFF FFS label on the side was placed lower than in the others |
| 11102 | Pine green | April 2010 | April 2010 | Sold to BLS in December 2005, renamed BLS Re 420 508-4, withdrawn in September 2009 as surplus |
| 11103 | Orange-gray | April 2010 | April 2010 | Ex-Swiss Express [de], sold to BLS in December 2005, renamed BLS Re 420 509-2, received BLS colour scheme, withdrawn in September 2009 as surplus |
| 11104 | Red | February 2010 | February 2010 | Sold to BLS in December 2005, renamed BLS Re 420 510-0, received BLS colour scheme, withdrawn in September 2009 as surplus |
| 11105 | Pine green | April 2010 | April 2010 | Sold to BLS in December 2005, renamed BLS Re 420 511-8, withdrawn in September 2009 as surplus |
| 11106 | Red | February 2010 | February 2010 | Ex-Swiss Express, sold to BLS in December 2005, renamed BLS Re 420 512-6, received BLS colour scheme, withdrawn in September 2009 as surplus |
| 11107 | Red | May 2014 | April 2015 | Sold to BLS in December 2005, renamed BLS Re 420 507-6, withdrawn in September 2009 as surplus |
| 11108 (420 108-3) | Orange-gray | — | — | Ex-Swiss Express |
| 11109 (420 109-1) | Orange-gray | — | — | Ex-Swiss Express |
| 11110 | Green-blue-silver | June 2022 | — | Sold to BLS in December 2004, renamed BLS Re 420 501-9, received BLS colour scheme. Sold to Extrazug.ch in June 2022, will receive original colour scheme |
| 11111 (420 111-7) | Red | — | — | |
| 11112 (420 112-5) | Red | — | — | |
| 11113 | Red | October 2003 | August 2004 | Accident in Zurich Oerlikon on 24 October 2003 |
| 11114 (420 114-1) | Red | — | — | |
| 11115 (420 115-8) | Red | — | — | |
| 11116 (420 116-6) | Red | — | — | |
| 11117 | Pine green | — | — | Sold to BLS in December 2004, renamed BLS Re 420 502-7, sold to Widmer Rail Services AG (WRS) in February 2022 |
| 11118 (420 118-2) | Red | — | — | |
| 11119 | Pine green | — | — | Sold to BLS in December 2004, renamed BLS Re 420 503-5, sold to Travys in January 2013 |
| 11120 | Red | June 2019 | June 2019 | |
| 11121 (420 121-6) | Red | November 2023 | November 2023 | |
| 11122 (420 122-4) | Red | October 2021 | October 2021 | |
| 11123 | Pine green | — | — | Sold to BLS in December 2004, renamed BLS Re 420 504-3, sold to Widmer Rail Services AG (WRS) in February 2022 |
| 11124 (420 124-0) | Red | April 2022 | April 2022 | |
| 11125 (420 125-7) | Red | November 2021 | November 2021 | |
| 11126 (420 126-5) | Red | — | — | |
| 11127 (420 127-3) | Red | — | — | |
| 11128 (420 128-1) | Red | August 2021 | August 2021 | |
| 11129 (420 129-9) | Red | November 2021 | November 2021 | |
| 11130 (420 130-7) | Red | — | — | |
| 11131 (420 131-5) | Red | April 2022 | April 2022 | |
| 11132 (420 132-3) | Red | December 2021 | December 2021 | |
| 11133 (420 133-1) | Red | — | — | ex-Swiss Express |
| 11134 (420 134-9) | Red | December 2021 | December 2021 | |
| 11135 (420 135-6) | Red | June 2021 | June 2021 | |
| 11136 (420 136-4) | Red | — | — | |
| 11137 | Pine green | January 2018 | June 2019 | Sold to BLS in December 2004, renamed BLS Re 420 505-5 |
| 11138 (420 138-0) | Red | October 2021 | October 2021 | |
| 11139 (420 139-8) | Red | — | — | |
| 11140 (420 140-6) | Red | March 2023 | March 2023 | |
| 11141 (420 141-4) | Orange-gray | December 2022 | — | Ex-Swiss Express, painted red in September 2009, sold to DSF Koblenz in December 2022, received original Swiss Express look including round headlights |
| 11142 | Pine green | — | — | Sold to BLS in December 2004, renamed BLS Re 420 506-8, sold to MBC in January 2013 |
| 11143 (420 143-0) | Red | — | — | |
| 11144 (420 144-8) | Red | — | — | |
| 11145 (420 145-5) | Red | November 2023 | — | |
| 11146 (420 146-3) | Red | — | — | |
| 11147 (420 147-7) | Red | April 2024 | April 2024 | |
| 11148 (420 148-9) | Red | 2022 | — | Sold to DSF Koblenz in 2022 |
| 11149 (420 149-7) | Red | — | — | |
| 11150 (420 150-5) | Red | April 2021 | April 2021 | |
| 11151 (420 151-3) | Red | April 2021 | April 2021 | |
| 11152 (420 152-1) | Red | — | — | |
| 11153 (420 153-9) | Red | — | — | |
| 11154 (420 154-7) | Red | — | — | |
| 11155 (420 155-4) | Red | June 2021 | June 2021 | |
| 11156 (420 156-2) | Red | — | — | Upgraded with ETCS level 2 |
| 11157 (420 157-0) | Red | — | — | Upgraded with ETCS level 2 |
| 11158 (420 158-8) | Red | — | — | Upgraded with ETCS level 2 |
| 11159 (420 159-6) | Red | — | — | Upgraded with ETCS level 2 |
| 11160 (420 160-4) | Red-blue | — | — | Assigned to SBB Cargo |
| 11161 (420 161-2) | Pine green | — | — | Upgraded with ETCS level 2 |
| 11162 (420 162-0) | Red | — | — | |
| 11163 (420 163-8) | Red | March 2023 | March 2023 | |
| 11164 (420 164-6) | Red | — | — | Upgraded with ETCS level 2 |
| 11165 (420 165-3) | Red-blue | February 2021 | February 2021 | Assigned to SBB Cargo, change of livery |
| 11166 | Red | September 2019 | September 2019 | |
| 11167 (420 167-9) | Red | — | — | |
| 11168 | Red | May 2018 | May 2018 | |
| 11169 (420 169-5) | Red-blue | January 2022 | January 2022 | Assigned to SBB Cargo |
| 11170 (420 170-3) | Red-blue | June 2018 | June 2018 | Assigned to SBB Cargo |
| 11171 | Red | June 2018 | June 2018 | |
| 11172$^I$ | Pine green | 09 December 1978 | 31 December 1978 | Accident in Vaumarcus on 09 December 1978 |
| 11172$^{II}$ (420 172-9) | Red | — | — | Bought from Mittelthurgaubahn (MThB) in February 2002. Painted red in December 2002, Swiss coat of arms painted. Upgraded with ETCS level 2 |
| 11173 (420 173-7) | Red | August 2020 | — | Sold to DSF Koblenz in 2022 |
| 11174 | Red | May 2018 | May 2018 | |
| 11175 | Red | February 2018 | February 2018 | |
| 11176 | Red | February 2018 | February 2018 | |
| 11177 | Red | December 2018 | December 2018 | |
| 11178 (420 178-6) | Red-blue | June 2021 | June 2021 | Assigned to SBB Cargo |
| 11179 | Red | September 2016 | September 2016 | Derailment in April 2016 at Stein-Säckingen |
| 11180 | Red | February 2018 | February 2018 | |
| 11181 (420 181-0) | Red | — | — | Upgraded with ETCS level 2. Zugkraft Aargau special livery |
| 11182 | Red | March 2018 | March 2018 | |
| 11183 | Red | December 2018 | December 2018 | |
| 11184 | Red | July 2015 | July 2015 | Accident in October 2011 in Olten |
| 11185 | Red | April 2018 | April 2018 | |
| 11186 (420 186-9) | Red-blue | June 2021 | June 2021 | Assigned to SBB Cargo |
| 11187 | Red | September 2018 | September 2018 | |
| 11188 | Red | May 2018 | May 2018 | |
| 11189 | Red | May 2018 | May 2018 | |
| 11190 | Red | April 2018 | April 2018 | |
| 11191 (420 191-9) | Red | — | — | Named 'Depot G'. Upgraded with ETCS level 2 |
| 11192 (420 192-7) | Red | — | — | Upgraded with ETCS level 2 |
| 11193 (420 193-5) | Red | — | — | Upgraded with ETCS level 2 |
| 11194 (420 194-3) | Red | — | — | Upgraded with ETCS level 2 |
| 11195 (420 195-0) | Red | — | — | Upgraded with ETCS level 2 |
| 11196 (420 196-8) | Red | — | — | Upgraded with ETCS level 2 |
| 11197 (420 197-6) | Red | — | — | Upgraded with ETCS level 2 |
| 11198 (420 198-4) | Red | — | — | Upgraded with ETCS level 2 |
| 11199 (420 199-2) | Red | — | — | Upgraded with ETCS level 2 |
| 11200 (420 200-8) | Red | — | — | Upgraded with ETCS level 2 |
| 11201 (420 201) | Dull red | — | — | LION upgrade for Zürich S-Bahn (September 2014) |
| 11202 (420 202) | Dull red | — | — | LION upgrade for Zürich S-Bahn (July 2011) |
| 11203 (420 203) | Dull red | — | — | LION upgrade for Zürich S-Bahn (November 2011) |
| 11204 (420 204) | Dull red | — | — | LION upgrade for Zürich S-Bahn (October 2015) |
| 11205 (420 205) | Dull red | — | — | LION upgrade for Zürich S-Bahn (September 2012) |
| 11206 (420 206) | Dull red | — | — | LION upgrade for Zürich S-Bahn (January 2015) |
| 11207 (420 207) | Dull red | — | — | LION upgrade for Zürich S-Bahn (September 2014) |
| 11208 (420 208) | Dull red | — | — | LION upgrade for Zürich S-Bahn (January 2014) |
| 11209 (420 209) | Dull red | — | — | LION upgrade for Zürich S-Bahn (August 2012) |
| 11210 (420 210) | Dull red | — | — | LION upgrade for Zürich S-Bahn (April 2015) |
| 11211 (420 211) | Dull red | — | — | LION upgrade for Zürich S-Bahn (September 2013) |
| 11212 (420 212) | Dull red | — | — | LION upgrade for Zürich S-Bahn (March 2016) |
| 11213 (420 213) | Dull red | — | — | LION upgrade for Zürich S-Bahn (May 2012) |
| 11214 (420 214) | Dull red | — | — | LION upgrade for Zürich S-Bahn (July 2015) |
| 11215 (420 215) | Dull red | — | — | LION upgrade for Zürich S-Bahn (June 2015) |
| 11216 (420 216) | Dull red | — | — | LION upgrade for Zürich S-Bahn (November 2011) |
| 11217 (420 217) | Dull red | — | — | LION upgrade for Zürich S-Bahn (July 2014) |
| 11218 (420 218) | Dull red | — | — | LION upgrade for Zürich S-Bahn (March 2014) |
| 11219 (420 219) | Dull red | — | — | LION upgrade for Zürich S-Bahn (November 2015) |
| 11220 (420 220) | Dull red | — | — | LION upgrade for Zürich S-Bahn (May 2014) |
| 11221 (420 221) | Dull red | — | — | LION upgrade for Zürich S-Bahn (June 2012) |
| 11222 (420 222) | Dull red | — | — | LION upgrade for Zürich S-Bahn (July 2013) |
| 11223 (420 223) | Dull red | — | — | LION upgrade for Zürich S-Bahn (November 2013) |
| 11224 (420 224) | Dull red | — | — | LION upgrade for Zürich S-Bahn (December 2012) |
| 11225 (420 225) | Dull red | — | — | LION upgrade for Zürich S-Bahn (March 2013) |
| 11226 (420 226) | Dull red | — | — | LION upgrade for Zürich S-Bahn (April 2013) |
| 11227 (420 227) | Dull red | — | — | LION upgrade for Zürich S-Bahn (April 2012) |
| 11228 (420 228) | Dull red | — | — | LION upgrade for Zürich S-Bahn (November 2014) |
| 11229 (420 229) | Dull red | — | — | LION upgrade for Zürich S-Bahn (January 2013) |
| 11230 (420 230) | Dull red | — | — | LION upgrade for Zürich S-Bahn (July 2011) |
| 11231 (420 231-3) | Red | September 2019 | September 2019 | |
| 11232 (420 232-1) | Red | — | — | |
| 11233 (420 233-9) | Red | June 2023 | June 2023 | |
| 11234 (420 234-7) | Red | — | — | |
| 11235 (420 235-4) | Red | — | — | |
| 11236 (420 236-2) | Red | January 2022 | January 2022 | |
| 11237 | Red | August 2018 | August 2018 | |
| 11238 (420 238-8) | Red | — | — | |
| 11239 (420 239-6) | Red | — | — | Named 'Porrentruy' |
| 11240 (420 240-4) | Red | — | — | Upgraded with ETCS level 2 |
| 11241 (420 241-2) | Red-blue | — | — | Assigned to SBB Cargo |
| 11242 (420 242-0) | Red | October 2022 | October 2022 | |
| 11243 (420 243-8) | Red | — | — | Upgraded with ETCS level 2. Special livery Wartung mit Durchblick |
| 11244 (420 244-6) | Red | — | — | Upgraded with ETCS level 2 |
| 11245 (420 245-3) | Red | — | — | Upgraded with ETCS level 2 |
| 11246 (420 246-1) | Red-blue | — | — | Assigned to SBB Cargo |
| 11247 (420 247-9) | Red-blue | — | — | Assigned to SBB Cargo. Upgraded with ETCS level 2 |
| 11248 (420 248-7) | Red | — | — | Upgraded with ETCS level 2 |
| 11249 (420 249-5) | Red | — | — | Previously had the Trans Europ Express livery. Upgraded with ETCS level 2 |
| 11250 (420 250-3) | Red | — | — | Upgraded with ETCS level 2. Special livery Wartung mit Durchblick |
| 11251 (420 251-9) | Red | — | — | Upgraded with ETCS level 2. Special livery 150 Jahre Schweizer Bahnen |
| 11252 (420 252-9) | Red | — | — | Upgraded with ETCS level 2. Special livery Wartung mit Durchblick |
| 11253 (420 253-7) | Red-blue | — | — | Previously had the Trans Europ Express livery. Later assigned to SBB Cargo |
| 11254 (420 254-5) | Red | — | — | Upgraded with ETCS level 2. Special livery Wartung mit Durchblick |
| 11255 (420 255-2) | Red | — | — | Upgraded with ETCS level 2 |
| 11256 (420 256-0) | Red | — | — | Upgraded with ETCS level 2. Special livery Wartung mit Durchblick |
| 11257 (420 257-8) | Red | — | — | Upgraded with ETCS level 2. Special livery Nachhaltige Entsorgung |
| 11258 (420 258-6) | Red | — | — | Upgraded with ETCS level 2 |
| 11259 (420 259-4) | Red | — | — | Upgraded with ETCS level 2 |
| 11260 (420 260-2) | Red | — | — | Upgraded with ETCS level 2 |
| 11261 (420 261-0) | Red | — | — | Upgraded with ETCS level 2 |
| 11262 (420 262-8) | Red-blue | — | — | Assigned to SBB Cargo. Upgraded with ETCS level 2 |
| 11263 (420 263-6) | Red | — | — | Upgraded with ETCS level 2 |
| 11264 (420 264-4) | Red | — | — | Upgraded with ETCS level 2 |
| 11265 (420 265-1) | Red | — | — | Upgraded with ETCS level 2 |
| 11266 (420 266-9) | Red | — | — | Upgraded with ETCS level 2 |
| 11267 (420 267-7) | Red | — | — | Upgraded with ETCS level 2 |
| 11268 (420 268-5) | Red-blue | — | — | Assigned to SBB Cargo. Upgraded with ETCS level 2. Sold to Sersa Group in December 2023 |
| 11269 (420 269-3) | Red | — | — | Upgraded with ETCS level 2 |
| 11270 (420 270-1) | Red-blue | — | — | Assigned to SBB Cargo |
| 11271 (420 271-9) | Red | — | — | Upgraded with ETCS level 2 |
| 11272 (420 272-7) | Red | November 2022 | November 2022 | Upgraded with ETCS level 2 |
| 11273 (420 273-5) | Red | — | — | Upgraded with ETCS level 2 |
| 11274 | Red | July 2015 | July 2015 | Accident on rail yard in Muttenz in February 2010 |
| 11275 (420 275-0) | Red-blue | — | — | Assigned to SBB Cargo. Upgraded with ETCS level 2 |
| 11276 (420 276-8) | Red-blue | October 2022 | October 2022 | Assigned to SBB Cargo. Upgraded with ETCS level 2 |
| 11277 (420 277-6) | Red | — | — | Upgraded with ETCS level 2 |
| 11278 (420 278-4) | Red | — | — | Upgraded with ETCS level 2. Named 'Cham' |
| 11279 (420 279-2) | Red | — | — | Upgraded with ETCS level 2 |
| 11280 (420 280-0) | Red-blue | — | — | Assigned to SBB Cargo. Upgraded with ETCS level 2. Special livery Vorwärts./Avanti tutta! |
| 11281 (420 281-8) | Red | — | — | Upgraded with ETCS level 2 |
| 11282 | Pine green | October 1975 | December 1975 | head-on collision with Ae 4/7 10906 near Landquart in October 1975 |
| 11283 (420 283-4) | Red | — | — | Upgraded with ETCS level 2 |
| 11284 (420 284-2) | Red | — | — | Upgraded with ETCS level 2 |
| 11285 (420 285-9) | Red | — | — | Upgraded with ETCS level 2 |
| 11286 (420 286-7) | Red | — | — | Upgraded with ETCS level 2 |
| 11287 (420 287-5) | Red | — | — | Upgraded with ETCS level 2 |
| 11288 (420 288-3) | Red-blue | — | — | Assigned to SBB Cargo. Upgraded with ETCS level 2. Special livery Vorwärts./Avanti tutta! |
| 11289 (420 289-1) | Red | — | — | Upgraded with ETCS level 2 |
| 11290 (420 290-9) | Red | November 2022 | November 2022 | Upgraded with ETCS level 2 |
| 11291 (420 291-7) | Red | — | — | Upgraded with ETCS level 2 |
| 11292 (420 292-5) | Red | December 2023 | December 2023 | Upgraded with ETCS level 2 |
| 11293 (420 293-3) | Red | October 2022 | October 2022 | Upgraded with ETCS level 2 |
| 11294 (420 294-1) | Red | — | — | Upgraded with ETCS level 2. Special livery 100 Jahre Circus Knie |
| 11295 (420 295-8) | Red | — | — | Upgraded with ETCS level 2 |
| 11296 (420 296-6) | Red | — | — | Upgraded with ETCS level 2 |
| 11297 (420 297-4) | Red | November 2021 | — | Upgraded with ETCS level 2. Accident in November 2021. Sold to railCare in September 2022 |
| 11298 (420 298-2) | Red | November 2022 | November 2022 | Upgraded with ETCS level 2 |
| 11299 (420 299-0) | Red | — | — | |
| 11300 (420 300-6) | Red | — | — | |
| 11301 (420 301-4) | Red | — | — | |
| 11302 (420 302-2) | Red | — | — | |
| 11303 (420 303-0) | Red | — | — | |
| 11304 (420 304-8) | Red | — | — | |
| 11305 (420 305-5) | Red | October 2022 | October 2022 | |
| 11306 (420 306-3) | Red | — | — | |
| 11307 (420 307-1) | Red-blue | — | — | Assigned to SBB Cargo |
| 11308 | Red | July 2018 | July 2018 | |
| 11309 | Pine green | August 2018 | August 2018 | |
| 11310 (420 310-5) | Red-blue | August 2023 | August 2023 | Assigned to SBB Cargo |
| 11311 | Red | June 2018 | June 2018 | |
| 11312 | Pine green | September 1985 | October 1985 | collision in Renens on 14 September 1985 with Ae 4/7 10940+11011 |
| 11313 (420 313-9) | Red | January 2022 | January 2022 | |
| 11314 (420 314-7) | Red-blue | August 2023 | August 2023 | Assigned to SBB Cargo |
| 11315 | Red | February 2019 | February 2019 | |
| 11316 (420 316-2) | Red | 2023 | 2023 | |
| 11317 (420 317-0) | Red | September 2018 | September 2018 | |
| 11318 (420 318-8) | Red | — | — | |
| 11319 (420 319-6) | Red | — | — | |
| 11320 (420 320-4) | Orange | November 2022 | November 2022 | Upgraded with ETCS level 2. Orange livery of InterregioCargo |
| 11321 (420 321-2) | Red | June 2023 | June 2023 | Upgraded with ETCS level 2 |
| 11322 (420 322-0) | Pine green (later red) | — | — | Upgraded with ETCS level 2 |
| 11323 | Red | March 2005 | June 2005 | fire damage between Arth-Goldau and Steinen on 23 March 2005 |
| 11324 (420 324-6) | Red | — | — | Upgraded with ETCS level 2 |
| 11325 (420 325-3) | Red | — | — | Upgraded with ETCS level 2 |
| 11326 (420 326-1) | Red | April 2023 | April 2023 | Upgraded with ETCS level 2 |
| 11327 (420 327-9) | Red | — | — | Upgraded with ETCS level 2 |
| 11328 (420 328-7) | Red | April 2023 | April 2023 | Upgraded with ETCS level 2 |
| 11329 (420 329-5) | Red | June 2023 | June 2023 | Upgraded with ETCS level 2 |
| 11330 (420 330-3) | Pine green | June 2023 | June 2023 | Upgraded with ETCS level 2 |
| 11331 (420 331-1) | Red | — | — | Upgraded with ETCS level 2 |
| 11332 (420 332-9) | Red | — | — | Upgraded with ETCS level 2 |
| 11333 | Red | October 2016 | October 2016 | Accident in Erstfeld in May 2015 |
| 11334 (420 334-5) | Red | — | — | Upgraded with ETCS level 2 |
| 11335 (420 335-2) | Pine green | — | — | Upgraded with ETCS level 2 |
| 11336 (420 336-6) | Red | — | — | Upgraded with ETCS level 2 |
| 11337 (420 337-8) | Red-blue | — | — | Assigned to SBB Cargo. Upgraded with ETCS level 2 |
| 11338 (420 338-6) | Red | — | — | Upgraded with ETCS level 2 |
| 11339 (420 339-4) | Red | — | — | Upgraded with ETCS level 2 |
| 11340 (420 340-2) | Red | — | — | Upgraded with ETCS level 2 |
| 11341 (420 341-0) | Red | — | — | Upgraded with ETCS level 2 |
| 11342 (420 342-8) | Red | — | — | Upgraded with ETCS level 2 |
| 11343 (420 343-6) | Red | October 2023 | October 2023 | Upgraded with ETCS level 2 |
| 11344 (420 344-4) | Red-blue | — | — | Assigned to SBB Cargo. Upgraded with ETCS level 2 |
| 11345 (420 345-1) | Red | — | — | Upgraded with ETCS level 2. Special livery Wartung mit Durchblick |
| 11346 (420 346-9) | Red-blue | — | — | Assigned to SBB Cargo. Upgraded with ETCS level 2 |
| 11347 (420 347-7) | Red-blue | — | — | Assigned to SBB Cargo. Upgraded with ETCS level 2 |
| 11348 (420 348-5) | Red | — | — | Upgraded with ETCS level 2 |
| 11349 (420 349-3) | Pine green | — | — | Upgraded with ETCS level 2 |
| 11371 (421 371-6) | Red-blue | — | — | Assigned to SBB Cargo. Upgraded to Re 421 for cross-border operations to Germany in December 2002. Later with special livery 6 x Zürich - München ab 2021. Sold to UTL in August 2022 |
| 11372 (421 372-4) | Red-blue | March 2021 | March 2021 | Assigned to SBB Cargo. Upgraded to Re 421 for cross-border operations to Germany in March 2003 |
| 11373 (421 373-2) | Red-blue | — | — | Assigned to SBB Cargo. Upgraded to Re 421 for cross-border operations to Germany in February 2003. Sold to Widmer Rail Service AG (WRS) in January 2018 |
| 11374 (421 374-0) | Red-blue | — | — | Assigned to SBB Cargo. Upgraded to Re 421 for cross-border operations to Germany in March 2003. Sold to Swiss Rail Traffic in September 2020 |
| 11375 (421 375-7) | Red-blue | December 2020 | December 2020 | Assigned to SBB Cargo. Upgraded to Re 421 for cross-border operations to Germany in March 2003 |
| 11376 (421 376-5) | Red-blue | December 2020 | December 2020 | Assigned to SBB Cargo. Upgraded to Re 421 for cross-border operations to Germany in October 2003 |
| 11377 (421 377-3) | Red-blue | June 2021 | June 2021 | Assigned to SBB Cargo. Upgraded to Re 421 for cross-border operations to Germany in October 2002 |
| 11378 (421 378-1) | Red-blue | June 2021 | June 2021 | Assigned to SBB Cargo. Upgraded to Re 421 for cross-border operations to Germany in March 2003 |
| 11379 (421 379-9) | Red-blue | — | — | Assigned to SBB Cargo. Upgraded to Re 421 for cross-border operations to Germany in January 2003. Later with special livery 6 x Zürich - München ab 2021. Sold to Dampflok-Depot Full in May 2021 |
| 11380 (421 380-7) | Red-blue | July 2021 | July 2021 | Assigned to SBB Cargo. Upgraded to Re 421 for cross-border operations to Germany in April 2003 |
| 11381 (421 381-5) | Red-blue | — | — | Assigned to SBB Cargo. Upgraded to Re 421 for cross-border operations to Germany in April 2003. Sold to Widmer Rail Service AG (WRS) in January 2018 |
| 11382 | Red | — | 02 July 2002 | fire damage on 31 January 2002 |
| 11383 (421 383-1) | Red-blue | — | — | Assigned to SBB Cargo. Upgraded to Re 421 for cross-border operations to Germany in April 2003. Later with special livery 6 x Zürich - München ab 2021. Sold to UTL in August 2022 |
| 11384 (421 380-7) | Red-blue | February 2021 | February 2021 | Assigned to SBB Cargo. Upgraded to Re 421 for cross-border operations to Germany in October 2003 |
| 11385 (421 385-6) | Red-blue | July 2021 | July 2021 | Assigned to SBB Cargo. Upgraded to Re 421 for cross-border operations to Germany in March 2004 |
| 11386 (421 386-4) | Red-blue | December 2020 | December 2020 | Assigned to SBB Cargo. Upgraded to Re 421 for cross-border operations to Germany in April 2004 |
| 11387 (421 387-2) | Red-blue | — | — | Assigned to SBB Cargo. Upgraded to Re 421 for cross-border operations to Germany in December 2004. Sold to IRSI in September 2019 |
| 11388 (421 388-0) | Red-blue | August 2023 | August 2023 | Assigned to SBB Cargo. Upgraded to Re 421 for cross-border operations to Germany in April 2004 |
| 11389 (421 389-8) | Red-blue | February 2023 | February 2023 | Assigned to SBB Cargo. Upgraded to Re 421 for cross-border operations to Germany in March 2004 |
| 11390 (421 390-6) | Red-blue | July 2021 | July 2021 | Assigned to SBB Cargo. Upgraded to Re 421 for cross-border operations to Germany in June 2004 |
| 11391 (421 391-4) | Red-blue | December 2020 | December 2020 | Assigned to SBB Cargo. Upgraded to Re 421 for cross-border operations to Germany in October 2004 |
| 11392 (421 392-2) | Red-blue | March 2021 | March 2021 | Assigned to SBB Cargo. Upgraded to Re 421 for cross-border operations to Germany in August 2004. Later with special livery 6 x Zürich - München ab 2021 |
| 11393 (421 393-0) | Red-blue | — | — | Assigned to SBB Cargo. Upgraded to Re 421 for cross-border operations to Germany in May 2004. Sold to IRSI in September 2019 |
| 11394 (421 394-8) | Red-blue | June 2021 | June 2021 | Assigned to SBB Cargo. Upgraded to Re 421 for cross-border operations to Germany in April 2004. Later with special livery 6 x Zürich - München ab 2021 |
| 11395 (421 395-5) | Red-blue | December 2017 | December 2017 | Assigned to SBB Cargo. Upgraded to Re 421 for cross-border operations to Germany in May 2004. Accident in Winterthur in February 2017 |
| 11396 (421 396-3) | Red-blue | July 2018 | July 2018 | Assigned to SBB Cargo. Upgraded to Re 421 for cross-border operations to Germany in June 2004 |
| 11397 (421 397-1) | Red-blue | February 2019 | February 2019 | Assigned to SBB Cargo. Upgraded to Re 421 for cross-border operations to Germany in January 2003 |

### Re 4/4$^{III}$ (Re 430, Re 436)

A total of 21 Re 4/4$^{III}$ were operated by SBB CFF FFS, numbered 11350–11370. They were later referred to as Re 430 and their numbering was shortened. An additional five engines were bought by the predecessors of Regionalverkehr Mittelland (RM), Re 4/4$^{III}$ 111–113, 141 and 181. These were later sold to Crossrail AG (renamed Re 436) and Widmer Rail Service AG (renamed Re 430), respectively. The following is a list of Re 4/4$^{III}$ engines.
List of Re 4/4$^{III}$ locomotives :
| Engine № | Colour | Withdrawn | Scrapped | Notes |
| 11350 (430 350-9) | Red | December 2021 | — | Bought from SOB (Re 4/4 41) in October 1995, sold to DSF Koblenz in December 2021 |
| 11351 (430 351-7) | Red | March 2021 | March 2021 | Sold to SOB in January 1985, renamed Re 4/4 44. Rebought from SOB in December 1994 |
| 11352 (430 352-5) | Red | June 2021 | June 2021 | Sold to SOB in July 1983, renamed Re 4/4 42. Rebought from SOB in April 1995 |
| 11353 (430 353-3) | Red | October 2022 | October 2022 | Sold to SOB in January 1984, renamed Re 4/4 43. Rebought from SOB in December 1994 |
| 11354 (430 354-1) | Red | August 2021 | August 2021 | |
| 11355 (430 355-8) | Red | February 2020 | February 2020 | |
| 11356 (430 356-6) | Red-blue | April 2023 | April 2023 | Assigned to SBB Cargo |
| 11357 (430 357-4) | Red | June 2021 | June 2021 | |
| 11358 (430 358-2) | Red | June 2021 | June 2021 | |
| 11359 (430 359-0) | Red | October 2022 | October 2022 | |
| 11360 (430 360-8) | Red | — | June 2019 | Accident in Langenthal in December 2018 |
| 11361 (430 361-6) | Red | November 2021 | November 2021 | |
| 11362 (430 362-4) | Red | December 2020 | December 2020 | |
| 11363 (430 363-2) | Red | December 2020 | December 2020 | |
| 11364 (430 364-0) | Pine green | July 2021 | July 2021 | |
| 11365 | Red | October 2013 | June 2014 | |
| 11366 (430 366-5) | Red | January 2022 | January 2022 | |
| 11367 (430 367-3) | Red | August 2021 | August 2021 | |
| 11368 (430 368-1) | Red | June 2021 | June 2021 | |
| 11369 (430 369-9) | Red | December 2020 | December 2020 | |
| 11370 (430 370-7) | Red | April 2023 | April 2023 | |
| 111 | — | — | — | Originally belonged to EBT, later RM. Sold to Crossrail AG and renamed Re 436 111-9. Currently in operation for Widmer Rail Service AG (WRS) as Re 430 111-5 |
| 112 | — | — | — | Originally belonged to EBT, later RM. Sold to Crossrail AG and renamed Re 436 112-7. Currently in operation for WRS as Re 430 112-3 |
| 113 | — | January 2010 | September 2017 | Originally belonged to EBT, later RM. Sold to Crossrail AG and renamed Re 436 113-5. Accident in Brig on 28 January 2010 |
| 141 | — | — | — | Originally belonged to VHB, later RM. Sold to Crossrail AG and renamed Re 436 114-3. Currently in operation for WRS as Re 430 114-9 |
| 181 | — | — | — | Originally belonged to SMB, later RM. Sold to Crossrail AG and renamed Re 436 115-0. Currently in operation for WRS as Re 430 115-6 |

### Named locomotives

Exceptionally, two Re 420 locomotives are named after communes, as indicated also by their respective coat of arms on the side of the engine. A third one is named 'Depot G', indicated below the driver's window:
* Re 4/4$^{II}$ 11239 (Re 420 239-6) «Porrentruy»
* Re 4/4$^{II}$ 11278 (Re 420 278-4) «Cham»
* Re 4/4$^{II}$ 11191 (Re 420 191-9) «Depot G»
Locomotive Re 4/4$^{II}$ 11239 inherited the name and coat of arms of Porrentruy from Ae 6/6 11483, which after the foundation of the canton of Jura in 1979 was renamed after that canton. Locomotive Re 4/4$^{II}$ 11278 received the name and coat of arms of Cham from Re 6/6 11673, which was involved in an accident in May 2015 in Erstfeld and was subsequently used for spare parts. Other Re 420 are not named, although in Switzerland it is common practice to name both locomotives (e.g. SBB Ae 6/6, Re 450, Re 460, Re 620) and EMUs (e.g. SBB RABDe 500 and RABe 501).

## Accidents

* On 24 October 2003, two passenger trains collided near Zurich Oerlikon station.
* On 10 January 2013, a Re 420 LION hauled trainset of the former S11 peak-hour service of Zurich S-Bahn collided with a Thurbo regional train (S33) near Neuhausen railway station.

## Gallery

* Pine green Re 4/4$^{II}$ before modernization in Geneva in 1985, with round headlights
* Fully modernized 11267: red color scheme, air conditioning, rectangular headlights, UIC plug, and steps
* Unit 11160 was the first locomotive to be equipped with air conditioning
* A freight train pulled by two Re 420 units
* Re 420 and Re 620 pull a freight train on the Gotthard route
* Re 420 310-5 with SBB Cargo livery
* Re 421 380-7: this subtype is adapted for service in Germany
* SBB Re 420 209-9 LION of Zurich S-Bahn