Air Circuit Breakers (ACBs): Used in main LV distribution boards for high fault interrupting capacity. Outdoor low-voltage power distribution boxes (hereinafter referred to as "distribution boxes") are low-voltage distribution equipment used in 380/220V power supply systems to receive and distribute electrical energy. Today, electrical systems are essential for homes and industries. But what exactly is a power distribution box, and why is it so essential in our daily lives? The DB panel board controls the flow of electricity. The lifelines of highly automated industrial production for electrical distribution and for the control and safety technology of manufacturing plants come together in control cabinets and electrical distribution boxes right down to the micro distribution boards.