Shell: The shell of the power distribution box is usually made of steel plate or plastic material, which has the characteristics of waterproof, dustproof and anti-corrosion, and protects the internal electrical components from the external environment. Today, electrical systems are essential for homes and industries. But what exactly is a power distribution box, and why is it so essential in our daily lives? The DB panel board controls the flow of electricity. A distribution box uses MCBs, RCDs, and busbars to protect circuits, prevent shocks, and ensure safe power distribution in homes and buildings. If you know. Mounting plate: Powder coated similar to RAL2000 or galvanized 6. With 20 years' experience in electrical industry, is the leading manufacturers of. trial applications.