The low voltage integrated distribution box is a distribution device suitable for three-phase AC 50HZ, rated voltage 0. SMART DISTRIBUTION BOXES FOR FLEXIBLE BUILDINGS. High-quality materials and robust product designs ensure a reliable connection, signal transmission and power. 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.