The HUAJIDIAN Porcelain Motorized Drop-out Fuse is an outdoor high-voltage dedicated protection device adapted to 10kV distribution network systems, mainly used for core protection of pole-mounted distribution transformers, high-voltage line terminals, and branches. When an overload or short-circuit fault occurs on the line, the device's built-in high-precision copper-silver alloy fuse melts quickly. Relying on the dual action of gravity and the built-in spring, the fuse tube automatically drops, forming a clear and intuitive visible break point.