This guide explores control panels, electrical boxes, breaker panels, bus bars, junction boxes, and custom enclosures to help you understand their sizes, types, and common applications. Used in industrial automation and process control. Houses PLCs, relays . Electrical control panels and distribution boxes are the backbone of modern electrical systems. Check out this quick guide: Think about how many devices you need, where you will install the box, and the environment. 5mm Galvanized mainframe â—Ź Electrostatic Powder Painted. From power and signal distribution to I&C applications and complete room. Large Enclosure for both indoor and outdoor.