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50 Years of Powering Innovation — Cosel Leads the Way
For over half a century, Cosel has been a trusted name in power supply technology. As one of the industry's top manufacturers, we deliver precision-engineered solutions that keep critical systems running — reliably and efficiently.
What We Manufacture are AC-DC Power Supplies, DC-DC Converters, Power Modules, and EMI Filters.
From factory floors to medical devices, Cosel products power the backbone of innovation across industries.

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Dec 20, 2024: COSEL Announces New UMA Series for medical applications. (UMA120F)
Dec 20, 2023: COSEL Announces New WMA Series for medical and industrial applications.
Mar 22, 2023: COSEL Announces New UMA Series for medical applications.
Oct 11, 2022: COSEL Announces New PJMA Series for medical applications (PJMA1500F)
Sep 13, 2022: COSEL Announces New DIN-rail power supply WDA Series for industrial applications.
Dec 14, 2021: COSEL Announces New PJMA Series for medical applications (PJMA300F)
Aug 16, 2021: COSEL Announces New WBA Series for 277VAC Input and industrial applications.
Mar 08, 2021: COSEL Announces New PJMA Series for medical applications (PJMA1000F).
Nov 20, 2020: COSEL Announces New WMA Series for medical and industrial applications (WMA35F and WMA75F).
Jul 31, 2020: COSEL Announces New PJMA Series for medical applications (PJMA600F).

※For the press releases of other new products, please visit https://en.cosel.co.jp/index.html.