Mersen, a global leader in electrical power and advanced materials, is driving innovation in the power electronics sector by delivering critical components that enhance safety, reliability, and energy efficiency. Headquartered in France with a strong presence in the U.S. and over 30 countries, the company supports high-performance markets including electric vehicles (EV), renewable energy, semiconductors, and energy storage. Mersen’s specialized fuses and protection systems are foundational in powering a cleaner and electrified future.
Technology and Innovation
At the core of Mersen’s innovation is its expertise in circuit protection, thermal management, and electrical energy conversion. The company has developed high-voltage DC fuse technologies optimized for EV traction systems, battery energy storage, and photovoltaic (PV) applications. These solutions are engineered for harsh environments, high breaking capacity, and minimal power dissipation — helping manufacturers meet both regulatory and technical demands. Mersen's products also comply with global standards like UL2579, IEC 60269-6, and JASO D622, supporting global deployment of their technologies.
Products and Services
Mersen offers a broad portfolio of power electronic protection components, with a strong emphasis on fuses for electric mobility, energy storage, and solar applications.
Mersen’s EV fuses are purpose-built for high-voltage battery pack protection and on-board charging systems. One flagship product is the MEV100A175-4, a 1000 VDC fuse rated for 175 A with a 100 kA breaking capacity. It is designed for use in battery disconnect units, battery management systems (BMS), and on-board chargers. This screw-mount fuse supports fast circuit interruption with minimal energy loss, making it ideal for modern EV platforms that demand compact, high-reliability protection.
Beyond EV-specific solutions, Mersen’s general-purpose fuse portfolio covers a wide range of applications in industrial power conversion and protection. These fuses are designed with robust materials, low I²t values, and precise melting characteristics to prevent damage in sensitive circuits. They are widely used in motor drives, inverters, and rectifiers across industrial automation and transportation sectors.
For photovoltaic applications, Mersen’s HP10M10-V solar fuse is a standout solution. This 10 A, 1000 VDC fuse provides superior protection for PV strings and combiner boxes in utility-scale and commercial rooftop systems. With a 50 kA interrupting rating, it ensures safe circuit isolation even under low fault current conditions typical of PV arrays. Designed with a rugged structure and RoHS compliance, this PCB-mount fuse delivers reliable thermal performance and long-term durability.
In July 2025, Mersen reported solid mid-year financial results and reaffirmed its full-year guidance, signaling steady growth across its power electronics business. The company was also recognized at the 2025 Qingdao Forum on International Standardization for its contribution to Sino-German collaboration in DC100 applications. Additionally, Mersen secured strategic orders in the electricity conversion sector, highlighting increased demand for its EV and energy storage protection components. The company is also set to showcase its latest technologies at the Battery Show North America in October 2025, underscoring its expanding role in the EV ecosystem.
Mersen is expanding its influence in the electrification space by developing next-generation fuses and DC protection systems that support higher voltages, faster switching, and more compact formats. The company is investing in R&D to optimize materials for high thermal resistance and reduced power losses, particularly in 800 V and 1000 V EV architectures. Additionally, Mersen aims to enhance its solar protection line to meet the growing global demand for PV systems, with a focus on smart fuse integration and monitoring capabilities. Through these initiatives, Mersen continues to support safer, smarter, and more sustainable power electronics solutions.
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