Prima H3 & Prima H4: Shunting with an eco-friendly attitude

Leading the way to greener and smarter mobility, worldwide.
Our ambition is to accompany all transportation stakeholders in meeting tomorrow’s mobility challenges. We strive to provide them with the most efficient and digital mobility systems, while further improving the environmental friendliness of our solutions.
Smart innovation for sustainable mobilityAcquisition of Bombardier Transportation
Alstom has completed the acquisition of Bombardier Transportation, creating a global mobility leader committed to respond to the increasing need for greener transportation worldwide.
Find out moreHealthier Mobility™
We are working on a Healthier Mobility™ portfolio of ready-to-implement and in-development solutions organised in four domains, which preserve health, limit impact on the environment while maintaining equipment reliability.
Learn moreInnovation drives our growth
To lead in green and smart solutions, we innovate in six piority areas to respond to mid- and long term business drivers: green traction, road electromobility, eco-design and manufacturing, autonomous train, data driven rail mobility and multimodality and flow management.
Learn moreLeading the way to sustainable and smart mobility - naturally
Our strategic plan entitled "Alstom in Motion" has a clear ambition: be the leading global innovative player for a sustainable and smart mobility.
A comprehensive portfolio of mobility solutions
We offer a complete range of equipment and services, from high-speed trains, metros, trams and e-buses to integrated systems, customised services, infrastructure, signalling and digital mobility solutions.
Discover our solutionsState-of-the art and validated solutions
We offer extensive range of proven and modular components for all types of railway vehicles. Continuous research and development, combined with sound validation equipment and decades of return of experience on Alstom and non-Alstom trains, guarantee that our customers will receive both state-of-the art and validated solutions.
Learn moreInnovating along the track
We offer a complete range of sustainable solutions for tracklaying, electrification and the supply and installation of electromechanical material along the entire track, in stations and depots. These infrastructure solutions, whether they are for urban or mainline projects, facilitate the integration of products as part of turnkey solutions.
Learn moreReinventing mobility
Alstom draws on its technological expertise and innovative capabilities to meet the current and future needs of operators and passengers. Its solutions cover a whole range of services, including urban transit, mainline travel, regional transport, mining networks and freight.
Learn moreA custom support
We offer a complete range of customised services including maintenance, modernisation, parts & repairs and support. All of which ensure operators the highest level of availability for their fleets, infrastructure and signalling systems.
Learn moreImproving traffic flow
Our state-of-the-art signaling solutions allow operators to ensure the highest standards in safe, seamless travel with urban and mainline solutions that meet the specific needs of each operation environment.
Learn moreIncreasing efficiency
Drawing on our complementary business lines, we offer bundled and fully integrated systems that include rolling stock, signaling, infrastructure and services. This turnkey approach optimises project execution and transport system performance.
Learn moreBombardier’s solutions
Alstom has acquired Bombardier Transportation. Browse rail.bombardier.com to discover Bombardier Transportation's solutions.
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Browse jobsPrima H3 & H4 at a glance
Based on the Prima modular platform, the Prima H3 and Prima H4 locomotives offer optimal shunting performance coupled with world-class energy efficiency.
In addition to single and double diesel engine versions, Prima shunting locomotives offer alternative power sources: battery (Prima H3) for light and zero-emission shunting, hybrid (Prima H3 and Prima H4) for heavy-duty shunting, bi-mode (Prima H4) to switch between electrified and catenaryless lines, and bi-mode battery (Prima H4) which integrates the added benefits of battery power. This versatility makes for substantial reductions in noise and also carbon footprint – up to 6,000 tonnes/year at SBB Cargo. Even its diesel configuration offers high fuel efficiency: in its single engine configuration, the Prima H4, with an optional stop-start system, achieves 15% lower fuel consumption than a traditional shunting locomotive, while both Prima H3 and Prima H4 offer exceptional autonomy.
Prima shunting locomotives stand out through their higher operating speeds. The three-axle Prima H3 can run at up to 100 km/h and the four-axle Prima H4 at 120 km/h, compared with the 80 km/h of most shunters. This means that they can be integrated more easily into rail traffic for mainline services or transiting between sites. The tractive efforts of 240 kN and 300 kN respectively also provide better adhesion when moving off on a bend, as well as greater towing capacity.
Prima H3 and Prima H4 are supported by Alstom’s long-standing expertise in total cost of ownership. Equipped with Alstom’s condition-based maintenance solution TrainTracer, these locomotives offer savings of up to 14% on maintenance costs. Prima locomotives further benefit from a central service competence centre for first-rate client support at all times.