RACPRO1: AC/DC DIN Rail Power Supply for Mission-Critical Industrial Automation Applications

Today’s automated assembly and production lines increasingly employ smart control systems, artificial intelligence (AI), and advanced robotics to push productivity to previously unattainable levels. Taking advantage of these technologies demands a steady flow of power to keep operations running smoothly and reliably.

The RACPRO1 family of DIN rail power supplies is designed to address the unique requirements of today’s advanced industrial automation applications, many of which operate in extreme environments. These include outdoor industrial installations such as traffic control systems, security systems, and parking garages where equipment is exposed to rain, dust, extreme temperatures, and humidity. Also included are factory environments, such as steel mills, foundries, and glass manufacturing plants with high ambient temperatures and airborne particulates, as well as food and beverage processing facilities requiring washdowns and chemical resistance for enhanced durability.


The RACPRO1-T240, -T480, and -T960 deliver 240, 480, and 960 watts, respectively. All three supplies support a universal three-phase AC input voltage range of 3 x 320VAC to 3 x 576VAC (the T240 also supports two-phase AC operation without derating, ensuring continuous operation if any one phase fails). Furthermore, all three supplies support a universal DC input voltage range of 430VDC to 850VDC, making them ideal for DC microgrid-based factory automation applications. This broad DC input capability also supports renewable energy solutions, including biogas, photovoltaics, and wind energy applications.

To ensure safety and compatibility across multiple industries, the RACPRO1 power supplies meet a wide array of international regulatory requirements. Certified according to the global safety standards IEC/EN/UL 62368-1, IEC/EN/UL 61010-1, and IEC/EN/UL/CSA 61010-2- 201, this product line demonstrates compliance with essential benchmarks for industrial automation equipment (also information technology equipment, laboratory equipment, and control devices).


In addition, these power supplies adhere to stringent electromagnetic emission standards (EN 61000-6-4 Class B) and immunity standards (EN 61000-6-2), which are essential for use in heavy industrial environments. These certifications simplify regulatory compliance, enabling end users to integrate RACPRO1 into their systems without additional certification challenges. As safety standards evolve, the RACPRO1 family is designed to remain compliant, providing peace of mind to developers, integrators, and end users alike.

The RACPRO1 series is engineered for maximum performance and reliability, addressing key metrics such as thermal behavior, Mean Time Between Failures (MTBF), and built-in protective features. Designed for high efficiency with minimal power loss, this series reduces heat buildup and lowers component stress, extending the lifespan to approximately 80kh at 40°C under full load.

Integrated protective features, including overvoltage protection, short-circuit protection, and thermal shutdown, enhance overall durability and ensure continued operation in harsh industrial environments. To validate long-term reliability, RECOM subjects each model to rigorous lifetime reliability testing, including extended stress simulations, shock and vibration tests, and high-temperature endurance assessments. These measures confirm the RACPRO1 series’ ability to operate reliably under extreme conditions while delivering consistent and stable power.


The RACPRO1-T240 series supports two-phase AC input from 2x350V to 2x575V, enabling continued operation without derating in the event of a single-phase failure.

For higher reliability in mission-critical and safety-critical applications, the RACPRO1-T480 and T960 models allow parallel connection of two units. This setup enables redundancy—where one power supply continues operating if the other fails—and supports load sharing, with both supplies distributing power evenly. These features help prevent system downtime and maintain stable power in industrial automation environments and other operations where interruptions can impact productivity or safety.

The RACPRO1 series reflects a meticulous approach to design, balancing ergonomics, efficiency, size, weight, and durability. Key design objectives include optimizing power conversion efficiency, extending operational lifetime, and minimizing no-load power consumption. Operating within an extended temperature range of -40°C to +70°C – with full power available up to 60°C and 120% peak power up to 45°C – the RACPRO1 series is built for demanding industrial and automation environments.


Thermal simulation and power path design are fine-tuned using advanced 3D CAD software to achieve optimal airflow and cooling. Design features include the integration of a microcontroller to control timing with precision, enhancing overall efficiency. The transformer design is also refined through CAD simulation to ensure optimal performance. While balancing high efficiency and cost, RECOM engineers use reliable commodity semiconductors combined with advanced switching topologies to meet stringent performance requirements at a competitive price point.

The RACPRO1 series stands out in the marketplace due to its real-world performance and ease of integration. In comparison with 15 competing products, the RACPRO1 series achieved best-in-class efficiency in 10 out of 15 tests and ranked among the top three in the other five.