DC Inline Fuse Solutions | 1000V, 30kA Breaking Capacity

The foundation of every ZHNYU DC inline fuse is precision engineering, which ensures accurate current sensing and rapid response to overcurrent events. Our state-of-the-art production lines utilize automated laser calibration to achieve a tolerance of ±2% in fusing time. This level of accuracy prevents nuisance tripping while providing dependable protection for sensitive electronic components. In recent independent tests, our fuses successfully interrupted fault currents within 2 milliseconds at 1000V DC, outperforming industry standards. We back this performance with a temperature-compensated design that maintains operating characteristics across -40°C to +125°C. In terms of application, our fuses have been deployed in offshore wind turbines in the North Sea, transmitting over 18 MW of power per turbine, and have maintained zero failures over three years. This operational reliability is why major energy developers include our fuses in their global standards.

Our DC inline fuses feature a breaking capacity of up to 30kA, ensuring safe interruption of severe fault currents without compromising the integrity of the entire system. This capability is critical in energy storage systems where battery banks can supply massive short-circuit currents. A documented case in a 100 MWh BESS installation in California witnessed a rare fault condition; the inline fuse cleared in 2.5ms, isolating the faulty module while allowing the rest of the plant to continue operating. This minimized loss of revenue and avoided a total system shutdown. For utilities and industrial facilities where downtime can cost up to $5,000 per minute, our fuses are an economical investment. They reduce the need for extensive safety coordination studies, thanks to their standardized melting curves. Additionally, our fuses are designed with current-limiting technology, which lowers the thermal and magnetic stresses on downstream components, prolonging cable and switchgear lifespan.