
About us
Founded in 1974, with headquarters in Sweden and operations in 15 countries across four continents, Powerbox serves customers all around the globe. The company focuses on four major markets – industrial, medical, transportation/railway and defense – for which it designs and markets premium quality power conversion systems for demanding applications. Powerbox’s mission is to use its expertise to increase customers’ competitiveness by meeting all of their power needs. Every aspect of the company’s business is focused on that goal, from the design of advanced components that go into products, through to high levels of customer service. Powerbox is recognized for technical innovations that reduce energy consumption and its ability to manage full product lifecycles while minimizing environmental impact. Powerbox is a Cosel Group Company.
About COSEL
Established in Japan 1969, COSEL is one of the world’s leading designers and manufacturers of high performance AC-DC Power Supplies, DC-DC Converters and EMI Filters. With quality, reliability & flexibility as our main focus, we pride ourselves on developing some of the highest quality and most reliable products seen anywhere in the world today. COSEL is a $284m global company employing some 790 staff with sales offices throughout Japan, Asia, Europe and North America.
Our products are at the heart of what makes delicate and complex systems tick. We take from volts to kilovolts, and from watts to kilowatts. We’re the people you turn to when you need to keep a high-speed train in motion, when power must be maintained safely underwater or at 36,000 feet, or when someone’s life depends on a steady power supply to a critical medical device.
We are masters of power.
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Job openings
POWERBOX Germany
PRBX R&D is expanding and looking for Power Designers
Read more here: Power supply designer (m/f/d)
POWERBOX Sweden
Senior developer power converters – New carrier opportunity at Powerbox Sweden
Read more here: Senior developer power converters
POWERBOX Sweden
Senior software developer Digital power – New carrier opportunity at Powerbox Sweden
Read more here: Senior software developer Digital power
News

COSEL announces 6W high isolation DC/DC converters for medical, industrial and ICT applications
COSEL Co, Ltd (6905: Tokyo) today announced the addition of a new series of high isolation 6W DC/DC converters for medical, industrial and ICT applications.

Powerbox’s 1200W power supply has adjustable ‘near to zero’ output voltage and current for conduction cooling applications
Powerbox has announced the release of the 1200W rated OFI1200A AC/DC power supply for industrial applications.

COSEL announces the addition of 10W and 15W units to its low profile open frame power supplies for demanding industrial applications
Cosel Co, Ltd (6905: Tokyo) today announced the addition of two open frame compact power supplies for demanding industrial applications to its LHA series.

COSEL’s adds a 300W to its robust and reliable PJMA series of power supplies for demanding medical applications
COSEL Co, Ltd (6905: Tokyo) today announced the expansion of its medical power offering with the addition of a 300W version to its PJMA series.