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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Head office
Powerbox
Västberga Allé 36A, 5tr
Hägersten, Sweden
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News
COSEL Expands HFA3500TF Power Supply Series
Building on the established HFA3500TF platform, COSEL has expanded its range of 3‑phase AC‑input, low‑profile power supplies with new higher output voltage variants, extending the series to 90 VDC, 130 VDC, 200 VDC, and 300 VDC. This expansion significantly broadens the application scope of the HFA3500TF family, addressing the growing demand for compact, high‑power solutions capable of supporting elevated […]
Unmanned Systems: Power as the Pillar of Operational Reliability
Operational success in unmanned systems is decided long before takeoff. While intelligence and processing get the headlines, reliability in the field is a function of power infrastructure. We explore why the ‘supporting layer’—from charging stations to control nodes—is the true pillar of mission success at the tactical edge.
RUGGED POWER. REDEFINED.
Rugged Power Redefined. Powerbox is expanding its Defense Line with a new mission‑ready platform. Watch the teaser and follow our pre‑launch updates.
Powering a More Sustainable Future
Powerbox is committed to powering a more sustainable future by reducing environmental impact across our entire value chain. Grounded in a five-pillar framework, we are engineering smarter, more compact power solutions to achieve a 20% reduction in emissions by 2030.
