The primary distribution box refers to the main distribution box, typically located in the distribution room. Today, electrical systems are essential for homes and industries. Panasonic Distribution Boxes unique features are Reversible door for flexible installation, dust guard to prevent entry of dust and other particles, front door aesthetics, Pan assembly for easy internal wiring installations, Door. 💡 Quick Answer: An electrical distribution box is a metal enclosure that houses circuit breakers or fuses, distributing incoming electrical power to individual circuits while providing overcurrent protection and a safe disconnection point for maintenance.