Core Features Three-Phase AC-DC Design for High-Power 24V DC Loads: Functions as a next-gen heavy-duty industrial power supply (QUINT20 series) that converts 400V AC three-phase input (common in high-power industrial grids) to stable 24V DC output. It delivers 20A rated output current (480W power rating) with ultra-low output ripple (<50mVpp), ensuring reliable power for heavy-duty equipment like multiple mid-size motors, large PLC systems, or dense sensor/actuator arrays that require continuous high current. Ultra-High Efficiency & Energy Savings: Equipped with QUINT20 series’ advanced switch-mode technology and synchronous rectification to achieve ≥95% efficiency (at full load)—the highest in its class. This minimizes energy waste and heat generation, critical for enclosed control cabinets or high-density power setups. The low no-load power consumption (<1.5W) further reduces standby energy use, aligning with strict global efficiency standards (e.g., EN 61000-3-2) and cutting long-term operational costs. Comprehensive Heavy-Duty Protection & Reliability: Integrates QUINT20 series’ enhanced protection mechanisms to safeguard high-value equipment and ensure 24/7 operation: Overload protection: Limits current to 110–150% of rated value, with latching shutdown (resettable via power cycle or remote command) to prevent component burnout. Short-circuit protection: Current-limited shutdown with automatic recovery, avoiding permanent damage to heavy-duty devices (e.g., motor drivers). Overvoltage protection: Clamps output to ≤28V DC to shield sensitive 24V DC components (e.g., PLC modules) from voltage spikes. Phase-loss protection: Detects single-phase failure in three-phase input, triggers an alarm, and maintains stable output to prevent production downtime. Over-temperature protection: Thermal shutdown at >90°C, with automatic recovery—preventing overheating in high-load or high-temperature industrial environments. Wide Input Tolerance & Industrial Durability: Designed for global three-phase grids, supporting an input range of 3×320–480V AC (compatible with 400V AC European/Asian grids and 480V AC North American industrial grids). It operates reliably in temperatures from -25°C to +70°C, suitable for cold warehouses, warm production floors, or outdoor enclosures (with proper housing). The IP20 protection rating (IEC 60529) shields internal components from dust and accidental contact, while vibration resistance (10–500Hz, 50m/s²) ensures performance in high-vibration setups (e.g., manufacturing lines with heavy machinery). Modular Design & Smart Installation: Features a rugged, DIN-rail mountable form factor (35mm standard DIN rail) with a width of 80mm—optimized for high current while saving cabinet space. Tool-free heavy-duty screw terminals accept 10–25mm² cables for secure high-current wiring. It includes QUINT20 series’ smart monitoring: a multi-color LED (green: normal; red: fault; yellow: overload/phase loss) and compatibility with remote I/O modules (e.g., QUINT-DIO) for real-time status tracking—simplifying maintenance and troubleshooting for large-scale systems. Typical Applications The Phoenix Contact QUINT20 PS-400AC-24DC-20-2939467 is engineered for QUINT20-series high-current 24V DC power delivery in three-phase industrial systems—ideal for critical heavy-duty scenarios where efficiency, reliability, and power density are essential—with core use cases including: Multi-Motor Power Supply: Powers 5–8 mid-size 24V DC motors (e.g., CKD AX series heavy-duty BLDC motors) and their drivers in large automation lines (e.g., automotive assembly conveyors, material handling systems). The 20A output supports parallel operation, while ultra-low ripple ensures smooth, synchronized motion—complying with IEC 60034-1 standards for rotating electrical machines. Large PLC & Control System Power: Supplies power to large-scale PLC systems (e.g., Siemens S7-1500, Allen-Bradley ControlLogix) and their peripheral racks (e.g., digital/analog I/O, communication processors, HMI panels) in industrial control rooms. The phase-loss protection prevents PLC shutdown due to input instability, and high efficiency reduces heat in control cabinets—complying with IEC 61131-2 standards for programmable controllers. Dense Sensor & Actuator Arrays: Powers hundreds of 24V DC industrial sensors (e.g., proximity sensors, vision cameras) and actuators (e.g., solenoid valves, pneumatic cylinders) in large manufacturing facilities (e.g., electronics production, packaging plants). The high current supports dense deployment, while low ripple avoids signal interference—complying with IEC 60947-5-2 standards for industrial control devices. Heavy-Duty Backup & Emergency Systems: Serves as a primary power source for 24V DC emergency systems (e.g., emergency stop circuits, backup lighting, safety interlocks) in critical infrastructure (e.g., power plants, water treatment facilities). The latching overload protection ensures fault isolation, and wide temperature resistance guarantees performance in emergency scenarios—complying with IEC 60335-1 standards for electrical safety.