Description: For circuit breakers, switches or sockets installed in racks. Opening for up to 22 modules (18 mm). Box is equipped with two earthing rails 10 x 8 mm. Length is 120 mm with 15x M5 connections each. A distribution box is a low-voltage electrical enclosure that receives incoming power and distributes it safely to multiple outgoing circuits through protective and switching devices such as MCBs, RCDs, RCBOs, fuses, isolators, busbars, neutral bars, earth bars, and surge protective devices. Browse our collection of 22 power distribution boxes and buy now! The industrial plugs, sockets, and connectors produced by have good electrical insulation performance, excellent impact resistance. What is a Distribution Box? A distribution box, or DB box, is a circuit breaker enclosure. The hub distributes electrical power from a single input source to various circuits throughout a building. Whether it's a home, office, or factory. Get free shipping on qualified 22-Circuit Breaker Boxes products or Buy Online Pick Up in Store today in the Electrical Department. Firstly, it. Surge Protection Devices (SPDs): These step in during voltage spikes, like lightning strikes or grid surges, and help shield your appliances from sudden damage.