The modular APD system offers flexible solutions for busing common power to various electrical components, simplifying wiring and troubleshooting. It allows multiple connections per phase for various applications, such as providing separate voltages to auxiliary circuits and control circuits for relays, contactors, timers, and circuit breakers. The system houses two conductors within a rigid plastic insulation housing, suitable for voltages up to 600VAC, with current ratings of 25A, 63A, or 80A. The entire system is touch-proof (IP20) and provides a cost-effective solution for installation and maintenance.