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PRBX Transportation power supplies


A moving non-controlled environment is a challenge for any electronics。 Our power solutions for transportation are well prepared for this。

The transportation industry is enormous, encompassing everything from municipal bus, subway, and commuter-train systems that get people to and from work and school, container ships that transport goods from port to port all around the globe; from the rail and trucking networks that move those containers across states, countries, and continents and many more requiring efficient and reliable power solutions. Powerbox has more than 40 years’ experience in designing and delivering transportation power supplies for applications in railway, marine and automotive. From watt to multi kilowatts we are able to design and supply the most efficient power solution to your application.

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A moving non-controlled environment is a challenge for any electronics. Our power solutions for Railway are well prepared for this.

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Our power solutions for marine are designed to comply and to guarantee sustainable power to any of your applications。

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The industrial automotive industry comprises a large segment of diverse applications such as buses, trucks, industrial vehicles, mobile machinery etc.

Quality assurance and follow-up

Quality is an integrated part of everything we do. Our design process includes extensive testing, internal as well as external. Tests are also frequently run by our customers in their respective applications. In addition to the information we gain by tracking repairs and service requests, we also do regular quality follow up together with our customers, all to ensure a long and trouble-free life for our products.
Powerbox is also certified by DNV according to ISO-9001:2015.

Caring for the environment

At Powerbox we take an active role in protecting our
environment. Our contribution includes:
→ Streamlined solutions and lean design using fewer components reduces material used. RoHS, WEEE and REACH are among the standards governing choice of materials.
→ High efficiency reduces energy consumption both directly by reducing losses and indirectly by reducing the need for cooling.
Energy efficient transportation and well developed use of online meetings are important elements in our determination to meet or exceed international standards by sustaining ISO-14001 compliance or the equivalent.
Read more about how we work with sustainability

Get in contact with a power conversion specialist


We lean confidently on over 40 years of experience and subject matter expertise to identify the best means of solving every particular power conversion challenge. Please contact a power conversion specialist with your need today.

  • As of May 25, 2018, a European privacy regulation called The General Data Protection Regulation (GDPR) has effect. Powerbox cares about your privacy and personal data. To be able to contact you, we need your consent to holding your personal data.

DC/DC Quick Solution Guide


Download our finder tool which will help simplify your task to find a suitable DC/DC conversion solution for your application.
Download DC/DC Quick Solution Guide (PDF)

Product examples


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Bus fleets modernization and passenger comfort

The challenge: With the development of large cities and growing demand for inter-city exchanges, existing train networks are often insufficient on their own and require complimentary fleets of busses to enable passengers to reach destinations efficiently。 For passengers convenience and connectability while traveling, new vehicles are equipped with individual video systems, high speed internet access […]

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Powering internet through underwater cables

Underwater cables for internet traffic covers long distances and repeaters amplify to keep speed, this demands highly reliable power supplies.

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Scalable battery charging for rolling stock

A customer was updating a series of regional trains and needed battery charging and dc supply, that were to operate in a tropical climate with natural convection cooling.

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PRBX new extra wide input DC/DC shorten time to market for demanding and ruggedized applications

Powerbox announces the launch of three new series of extra-wide input voltage range, 40W to 100W board-mounted DC/DC converters for the railway, transportation and defense industries.

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COSEL announces high power density 300W and 1000W power supplies with extended communications bus for demanding medical and industrial applications

Cosel Co, Ltd (6905: Tokyo) today announced the release of two new models of high power density, 300W and 1000W power supplies with extended communications I/O for demanding medical and industrial applications。

Powerbox announces 105 models of DC/DC converters featuring 2xMOPP medical approvals
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Powerbox announces 105 models of DC/DC converters featuring 2xMOPP medical approvals

Powerbox announces the introduction of three new series of 15W, 20W and 30W board mount DC/DC converters for demanding medical applications, totaling 105 models.

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