This includes double-layer EPDM rubber sealing strips and silicone waterproof glue. Waterproof glands and dustproof grooves further block contaminants. (1) Waterproof distribution box engineered for harsh outdoor and industrial environments, providing IP65–IP68 sealing against dust, rain, and UV. Modern designs focus on balancing. Distribution boxes are a component of your electrical supply system dividing electrical power feeds into subsidiary circuits while offering a protective fuse or circuit breaker for every circuit in a common enclosure. You find them on construction sites, irrigation systems, outdoor lighting, and marine docks. If water gets inside a standard box, it causes short circuits. However, the outdoor environment is complex and changeable, and extreme weather, sandstorms and other phenomena often occur, which requires metal distribution boxes to have good waterproof and dustproof performance to ensure the stable operation of the power system.