In a world increasingly shaped by the urgent need for climate action and social responsibility, PRBX (Powerbox) is a shining example of how industrial technology companies can lead with purpose. From the very beginning, PRBX has embedded sustainability into its core mission—not just as a corporate responsibility, but as a foundational pillar of its innovation and long-term strategy.

Read more →

For over five decades, our company has specialized in designing power supplies for challenging applications, honing our expertise through this extensive experience.

Read more →

On April 30, 2024, COSEL Co. (COSEL), Ltd. entered into a capital and business alliance agreement with LITE-ON TECHNOLOGY CORPORATION (LITEON) and has been promoting business collaboration under the joint vision of COSEL and LITEON to “Become a Worldwide Leading Brand in Standard Power Solution.”

Read more →

Subsea power electronics design demands extreme reliability making it one of the most technically challenging and rapidly evolving fields in power systems engineering.

Read more →

For the power designer, any new technology that improves performance while making products smaller and more energy efficient is a very exciting concept — we’re talking holy grail territory.

Read more →

PRBX latest White Paper: “Ecodesign, Reuse, Repair, Prolonging Lifetime and New Technology – Is it the new paradox?”

Read more →

Curiosity and the sharing of knowledge regarding new technologies is part of Powerbox’s DNA, with the ultimate goal of providing you with the most efficient power solutions for your demanding applications.

Read more →

As presented by Powerbox (PRBX) at the 2020 Electronica Power Electronics Forum, the history of the power industry is fascinating and one full of amazing, genius-level engineers who have made power solutions more efficient, lighter, smarter and much more.

Read more →

Powerbox has announced the release of a new dual channel power supply for Marine engine control.

Read more →

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.

Read more →

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.

Read more →

Powerbox announces the introduction of its ENI250A series designed to deliver peak power to motor start or/and high capacitive loads in factory automation applications.

Read more →

COSEL’s very high reliability 40W DC/DC converter for demanding applications offers 10 year warranty

Read more →

Powerbox proudly announces that its new S-CAP BOOST platform has been selected by EDN magazine as one of the most significant products of the year.

Read more →

Cosel market first portable Product Selector App developed to operate across all mobile devices and computers, even without internet connection.

Read more →

Cosel Co, Ltd (6905: Tokyo) announced today that it has acquired The Powerbox Group. The Powerbox Group and its subsidiaries employ 120 people, with a consolidated turnover of more than €40m throughout 15 countries. With design centers in Sweden (HQ), Germany & Netherlands as well as offices throughout Europe, USA, China and Australia, they specialize in the design & manufacturing of Standard, Semi-Standard and Full Custom power supplies throughout the Industrial, Medical, Transportation & Defense sectors.

Read more →

Powerbox has announced the launch of its second generation of power supplies dedicated for Marine applications and demanding industrial systems.

Read more →

Powerbox has announced a new technology platform to power industrial applications requiring high reliability and resilience in extreme environments. Designed to power subsea equipment such as gas and oil monitoring and control systems situated on the seafloor, fed from an AC or DC high voltage line feeder the PRBX VB410-380 power solution delivers 48V DC with very high reliability and resilience.

Read more →

Powerbox introduces four new products within its Marine Line, PT570, PT571, PT576 and PT577, complying with the major classifications and approved by Det Norske Veritas (DNV), Germanischer Lloyd (GL) and major marine approval organizations. Designed for demanding applications requiring peak power, the new series can deliver 50% extra peak current for 10 seconds and exhibits high efficiency, up to 92%.

Read more →