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 […]

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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.

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Rugged Power Redefined. Powerbox is expanding its Defense Line with a new mission‑ready platform. Watch the teaser and follow our pre‑launch updates.

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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.

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Discover how power decisions shape system success. Learn why a system-level approach to power architecture reduces risk and strengthens long-term performance.

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Modern defense, industrial automation and transportation systems often operate where traditional power supplies fall short, requiring silent, reliable, fan-free solutions that withstand dust, shock, vibration, temperature swings and 24/7 operation.

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Diamond is showing potential to outperform both silicon and wide band gap semiconductors in power electronics.

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Wide band gap (WBG) semiconductors like gallium nitride (GaN) advance power electronics with higher efficiency, faster switching, and greater power density, though adoption faces challenges.

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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.

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COSEL has just unveiled the full-brick DCS1400B, an incredibly robust, high-efficiency, high-voltage DC/DC converter (HVDC converter) delivering up to 1400W, that is perfect for harsh environments and rugged applications.

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

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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.”

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

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Radio communications play a critical role in modern defense systems, enabling real-time coordination, situational awareness, and command-and-control capabilities across a wide spectrum of operations.

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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.

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Laser equipment in medical applications require highly reliable and safe power supplies that can deliver very high peak energy levels to the laser or discharge tubes.

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Modernization of railways is done basically with an objective to run existing and new trains at faster speeds safely and to give better customer service to rail users.

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

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COSEL Co, Ltd (6905: Tokyo) today announced the launch of the HFA3500TF, a low-profile 3-phase, 3-wire 3500W AC/DC enclosed power supply design optimized for industrial equipment such as semiconductor manufacturing, laser processing machines and robotics.

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Powerbox has announced the release of its new ruggedized series, the ECD1000A for ground-based defense applications and harsh industrial environments.

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COSEL Co, Ltd (6905: Tokyo) has announced the launch of the PDA series of AC/DC power supplies with further enhanced reliability for industrial applications.

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COSEL Co, Ltd (6905: Tokyo) today announced the launch of a wide range of low profile power supplies for medical applications.

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COSEL Co, Ltd (6905: Tokyo) today announced the launch of a new generation of highly compact power supplies for industrial applications, the TE series.

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Powerbox, one of Europe’s largest power supply companies and a leading force for four decades in optimizing power solutions for demanding applications, has announced the release of its new ruggedized 1200W AC/DC power supply for ground based defense applications and harsh industrial environments.

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COSEL Co, Ltd (6905: Tokyo) today announced its open-frame high power density, 700W, 3×5 inch power supply optimized for efficient cooling for use in demanding medical and industrial applications has been shortlisted at the prestigious Elektra Awards.

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Cosel Co, Ltd (6905: Tokyo) today announced the addition of a 3000W AC/DC enclosed power supply with an adjustable output voltage from 100VDC to 350VDC for industrial applications requiring a fast output voltage response.

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COSEL Co, Ltd (6905: Tokyo) today announced the launch of the HCA3500TF, a fanless 3-phase / 3-wire 3500W AC/DC enclosed power supply, design optimized for industrial equipment such as high-frequency amplifiers, laser processing machines and robotics.

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COSEL Co, Ltd (6905: Tokyo) today announced the expansion of its medical power offering with the addition of the new UMA series, the first two models being the 30W UMA30F and the 60W UMA60F.

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COSEL Co, Ltd (6905: Tokyo) today announced the introduction of its new open-frame high power density, 700W, 3×5 inch power supply optimized for efficient cooling for use in demanding medical and industrial applications.

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COSEL Co, Ltd (6905: Tokyo) today announced the expansion of its medical power offering with the addition of a 1500W version to its PJMA series.

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