The role of high-voltage DC fuses in energy storage systems is to protect the system from the effects of overcurrent and short circuits. Energy storage systems typically include battery packs, chargers, inverters, and electrical loads. The current transferred between these components must be controlled and protected, otherwise it may cause fires, explosions, or electrical failures. High-voltage DC fuses are a safety device that can quickly cut off the circuit in case of overcurrent or short circuit, preventing fires or equipment damage. They are used together with other power protection devices such as circuit breakers, fuses, or relays to ensure the long-term reliability and safety of the system.