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2 photos from Wikimedia Commons · credits & licences
- 1. De2-2 locomotive P1250739: JuergenG· CC BY-SA 3.0
- 2. BTB No 2, Class E2E - 20100131-DSC 2255 (4872081809): Yannick Bammert· CC BY 2.0
what is it?
The BTB E2E, also known as F 2/2 and De 2/2, were a pair of Swiss electric locomotives operated by Burgdorf Thun Bahn (BTB) in the early twentieth century. They are the oldest three phase locomotives designed for full service operation that have been preserved. The locomotives were built by Brown, Boveri & Cie (BBC) and Schweizerische Lokomotiv- und Maschinenfabrik (SLM) and entered service in 1899.
base stats
Bars compare against all trains: 600 km/h (maglev), 1,700 seats; power, weight and number built on a log scale up to 20 MW, 1,000 t and 20,000 built.
fun facts
- First built 127 years ago, in 1899.
- Weighs about as much as 5 African elephants (~6 t each).
- Served for 31 years (1899–1930).
electric locomotive: Draws power from overhead wires or a third rail and pulls separate carriages.
spec sheet
- built
- 1899
- in service from
- 1899
- retired
- 1930
- status
- retired
- number built
- 2
- kind
- Electric
- traction
- electric
- origin
- 🇨🇭 Switzerland
- builders
- Brown, Boveri & Cie, Swiss Locomotive and Machine Works
- top speed
- 50 km/h
- power
- 220 kW
- gauge
- 1,435 mm standard gauge
- electric system
- 750V AC Catenary
- wheel arrangement
- B
- length
- 7.8 m
- weight
- 29.6 t
From the Wikipedia infobox and Wikidata. Blank means the sources don't say.
Sources: Wikidata Q55604633, Wikipedia: BTB E2E (CC BY-SA 4.0).Updated 2026-10-25.