A distribution box, or DB box, is a circuit breaker enclosure. It is a vital part and central hub of any electrical system. The hub distributes electrical power from a single input source to various circuits throughout a building. High-quality materials and robust product designs ensure a reliable connection, signal transmission and power. 150. 2 million children under the age of five suffer from chronic malnutrition worldwide – this must stop. SMART DISTRIBUTION BOXES FOR FLEXIBLE BUILDINGS. The D box is a junction point where the effluent is divided and directed to different parts of the. Distribution blocks are used in various industries Heating/cooling for operating heaters, cooling systems and ventilation equipment. For DIN rail or chassis mounting with screws.