Core Features 24V DC-to-24V DC UPS Backup for Critical Loads: Functions as a compact industrial-grade UPS module designed to provide uninterrupted 24V DC power to critical equipment (e.g., PLCs, safety relays, IoT gateways) during primary power failures. It operates in a 24V DC system, drawing power from a primary 24V DC supply and switching to a connected backup battery (not included) within milliseconds—ensuring zero downtime for load devices that cannot tolerate power interruptions. High Efficiency & Battery Charge Management: Equipped with advanced switch-mode technology to achieve ≥92% efficiency (at full load), minimizing energy waste and heat generation in control cabinets. It integrates a built-in battery charger that supports 24V DC lead-acid (VRLA/AGM) or lithium-ion batteries, with smart charging algorithms (constant voltage/current) to extend battery life and prevent overcharging—complying with IEC 61056 standards for battery chargers. Comprehensive Protection for Loads & Battery: Integrates multi-layered protection mechanisms to safeguard both connected equipment and the backup battery: Overload protection: Limits output current to 120% of rated value (10A max) to prevent damage to critical loads during surges. Short-circuit protection: Instantly shuts down output during short circuits, with automatic recovery once the fault is resolved. Battery reverse-polarity protection: Blocks current flow if the backup battery is connected incorrectly, avoiding permanent damage to the UPS module. Over-temperature protection: Thermal shutdown at >85°C to prevent component burnout in high-temperature environments. Compact Design & Easy Integration: Features a slim, DIN-rail mountable form factor (35mm standard rail) with a width of only 45mm—ideal for space-constrained control cabinets. It supports tool-free screw terminal wiring (accepts 1.5–4mm² cables for power/load, 4–10mm² for battery) and includes a Phoenix Contact “PN” (Push-in) terminal option for faster, tool-less connections—reducing installation time. Status Monitoring & Remote Diagnostics: Integrates a multi-color LED indicator (green: normal; yellow: battery charging; red: fault/low battery) for real-time visual status. It also supports remote monitoring via optional communication modules (e.g., Modbus RTU), enabling centralized tracking of UPS status (battery level, load current) and fault alerts—simplifying maintenance for distributed industrial systems. Typical Applications The Phoenix Contact QUINTT4-UPS-24DC-24DC-PN-2907068 is engineered for 24V DC system uninterruptible power—ideal for scenarios where critical 24V DC loads require zero-downtime power—with core use cases including: PLC & Safety Relay UPS Backup: Provides backup power to 24V DC PLCs (e.g., Siemens S7-1200) and safety relays in manufacturing lines. During primary power failures, it switches to battery power to preserve PLC programs and maintain safety circuit functionality—complying with IEC 61131-2 standards for programmable controllers. Industrial IoT Gateway Power Protection: Supplies uninterrupted power to 24V DC IoT gateways in remote automation networks (e.g., pipeline monitoring, smart factories). The fast switchover ensures no data loss during power outages, while smart battery management extends backup runtime—complying with IEEE 802.15.4 standards for low-power IoT. Process Control Instrument Backup: Powers 24V DC process instruments (e.g., flow meters, pressure transmitters) in chemical or oil refinery systems. The UPS module maintains instrument operation during power dips, ensuring continuous process data collection and preventing costly shutdowns—complying with IEC 61508 SIL 2 standards for functional safety. Transportation Control System UPS: Supports 24V DC control systems in rail or automotive manufacturing (e.g., conveyor control, robotic workcell logic). The compact design fits in mobile equipment cabinets, while wide temperature tolerance (-25°C to +70°C) ensures reliability in harsh production environments—complying with EN 50155 standards for railway electronics.