Siemens Fusesaver

The world’s fastest MV vacuum circuit breaker clears faults in 10 ms to reduce fire risk and outage impact. Self‑powered operation supports overhead networks. Fusesaver BROCHURE Why Fusesaver™? Overhead medium voltage networks must deliver reliable supply while controlling operating costs and managing safety risks. Faults on lateral lines are a major cause of outages and field interventions. Fusesaver™ addresses these challenges directly. As the world’s fastest MV vacuum circuit breaker, Fusesaver clears faults in as little as half a cycle (10 ms), reducing the impact of transient faults and shortening outage durations. In fire risk areas, minimizing arc duration helps reduce the likelihood of fault related ignition. Its compact, lightweight design enables fast installation and commissioning. The unique device is self-powered from line current and supports multi-phase fault clearing for both transient and permanent faults. Multiple operating modes (fuse saving, reclosing, sectionalizing and switching) allow utilities to deploy a single device consistently across different network applications. Key benefits Fast fault clearing for improved network reliability Fusesaver clears faults in half a cycle (10 ms), reducing the impact of transient faults, shortening outage durations and limiting stress on network assets. Shorter arc duration also helps lower ignition risk in fire prone areas. One device for multiple overhead network functions Multiple operating modes (fuse saving, reclosing, sectionalizing, switching) allow utilities to use one device across diverse network scenarios, supporting standardization and adaptable protection strategies. Less installation effort and ongoing operating costs Compact, lightweight design enables fast installation, even remotely. Self-powered operation and optional remote access reduce site visits, enhancing asset management and lowering operating costs.