Stadler Euro

The Stadler Euro (known as the Vossloh Euro until 2015) is a class of diesel-electric locomotives built by Stadler Rail for the European market. It is available in two basic variants, the four-axle Euro 3000, and the six-axle Euro 4000. These locomotives are powered by EMD 710 prime movers. A six-axle electric-only variant is marketed as Euro 6000; it is also built for the Iberian gauge.

At the beginning of the 2000s, numerous private train operators emerged in mainland Europe, as open-access freight operation was already granted in some European countries before complete liberalization in 2012. These mainly used second-hand diesel locomotives formerly in use with the state railways of the respective country, or new medium-powered diesel locomotives like the EMD Class 66 or Vossloh G2000. With the success of these operators rising and trains getting heavier, the need of a complete new high-powered diesel locomotive series was becoming high, especially for cross-border freight traffic where absence of, or changes in electrification voltage made electric traction impossible or problematic.^{[citation needed]}

Primarily due to environmental issues and high costs, developments for such a new locomotive series were pushed back whenever possible. In the mid-2000s development of a new series finally seemed economically viable; becoming part of Alstom's Prima locomotive programme. Development of the programme was started under Alstom supervision, but as the Alstom Valencia plant was bought by Vossloh this series got the Vossloh name: Vossloh Euro.

The family can be traced back to the Electro-Motive Diesel engined, Valencia built JT 42BW, JT 42CW and JT 42HW-HS family which were built in various configurations (including 4 and 6 axle variants) for both Israel Railways and English, Welsh and Scottish Railway (as the Class 67); these locomotives used the same GM-EMD engines and traction motors and had similar body shells to the products later built at the Valencia plant under Vossloh's ownership.^{[citation needed]}

In 2004, the Valencia plant left Alstom ownership and was bought by Vossloh; because of this change of ownership, there are many similarities between the Vossloh Euro locomotives, the Alsthom/GM-EMD JT42 locomotives.^{[citation needed]}

After the change of ownership, the next product to roll off the lines at Valencia was the RENFE Class 334 locomotives which are (excluding minor differences) Iberian gauge versions of the later Vossloh Euro locomotives.^{[citation needed]}

The common factor between this class of locomotives and its predecessors is the General Motors Electro-motive (now Electro-Motive Diesel, since 2010 a subsidiary of Caterpillar) EMD 710 engine and EMD D43 electric motors with associated electronic controls (except for the Euro 3000 AC introduced in 2011, which uses EMD AC electric motors). Thus EMD supplies the entire engine (see also prime mover) and power transmission system for these locomotives including the generator.^{[citation needed]}

The rigid bodyshell show technical similarities with the predecessors (RENFE Class 334 and EWS class 67). The design is modular allowing easy access and change of internal components.