Distribution boxes are built with durable materials, typically metal or high-grade plastic, designed to endure environmental stresses. They consist of a rigid enclosure housing busbars, circuit breakers, fuses, and wiring terminals. In practical. The DB panel board controls the flow of electricity. Residual Current Circuit Breaker (RCCB): RCCBs detect small imbalances in electrical current to enhance safety. In this comprehensive guide, we will explore. Power distribution boxes, also known as Power Distribution Units (PDUs) or distros, play a vital role in safely distributing electricity from a power source to multiple devices within a circuit. With one input and several outputs, these boxes allow multiple devices to connect through the distro. The main function of a Distribution Box is to act as a central hub.