Mersen launches AC/DC combined fuses up to 1,000 V/1,000 A for EV charging and energy storage

Mersen has unveiled a new line of high-performance fuses designed to operate across both AC and DC currents within a single compact unit. This innovation aims to streamline the design and manufacturing process for equipment makers working on inverters, solid-state transformers, EV charging stations, and energy storage systems by removing the need for separate fuses for alternating and direct current stages. The new fuse range includes standard AC, aR, and fast-acting variants, with two additional sizes specifically tailored for DC applications up to 1,000 volts and 1,000 amps, meeting the demands of higher-voltage DC bus architectures prevalent in modern EV charging infrastructure and grid-scale storage solutions. The fuses are produced using automated manufacturing processes and comply with a range of international standards, including IEC, UL, CCC, RoHS, REACH, and WEEE, ensuring safety and environmental responsibility. Mersen conducts rigorous testing both in its own UL-recognised laboratory and through external specialist institutes, underscoring the reliability and performance of the new products. The company highlights that the development process involved close collaboration with key customers in the energy storage, electric vehicle charging, and data centre sectors, reflecting a tailored approach to market needs. To assist customers in integrating these fuses into their systems, Mersen provides simulation data that allows engineers to model fuse behaviour under specific operating conditions before finalising product selection. This proactive support helps reduce design risks and optimises system protection strategies. The introduction of these combined AC/DC fuses is poised to simplify component procurement and reduce space requirements in complex power systems, potentially accelerating the deployment of advanced EV charging and energy storage infrastructure.