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.
Please follow us on LinkedIN:
PRBX Videos
Press office
For press related inquiries, please go to the press office.
EPLAX
Learn more about EPLAX (German).
Job openings
Check out the opportunities.
Job openings
We currently don’t have any job openings.
Contact us
Our offices
Please find your nearest Powerbox office.
Show all offices.
Head office
Powerbox
Västberga Allé 36A, 5tr
Hägersten, Sweden
Map and more info
Subscribe to Newsletter
Subscribe to our newsletter and keep updated.
Suppliers
News
Powerbox Announces Ownership Transition to Hypax
Powerbox announces an agreement to transfer ownership to Hypax, marking the next step in the company’s long-term growth while ensuring full continuity for customers and partners.
Powerbox launches ECDD DC/DC series for defense and harsh environments
Powerbox introduces the ECDD DC/DC series for defense and harsh environments, delivering stable performance even under unstable power conditions.
Inside MIL-STD-1275: What Your Power System Must Survive
MIL-STD-1275 defines the electrical conditions power systems must withstand in 28V vehicle environments. This article explains the real-world challenges of unstable input power and what reliable system design requires.
COSEL Expands HFA3500TF Power Supply Series
New higher‑voltage variants of COSEL’s HFA3500TF series extend output up to 300 VDC, giving designers greater flexibility to build compact, scalable high‑voltage systems with up to 1000 VDC using series configurations.
