Residual current protection (RSD/RCCB/RCBO): Detects leakage current and cuts off power to reduce electric shock risk. Earthing connection: Ensures proper grounding to maintain safety and system. For procurement professionals, electrical contractors, and project managers, choosing the right Distribution Box (DB Box) is a critical decision that directly impacts system safety, reliability, and long-term operating costs. This ultimate guide explains what a distribution box does, its internal. Safely conduct, connect and distribute energy in hazardous areas with R. It sends electricity from the main supply to different circuits. This keeps your power neat and safe. The box uses circuit breakers or fuses to protect you. As a member of the ABB MNS family, this particular product is widely used in the lower-level power distribution facilities with MNS® low-voltage switchgear in the following. Inside, several key components work together to ensure safe and efficient power distribution: Circuit Breakers: These devices protect circuits by cutting off power during overloads or short circuits, preventing damage.