Industrial cabinets rarely offer the space designers wish they had. As more sensing, control and communication hardware moves onto the same rail, power supplies often become the limiting factor in how tightly everything can be packed. RECOM’s new RACPRO1-S120 series is built around this problem. The unit delivers one hundred and twenty watts in a form factor that fits into a twenty eight millimeter slot, reaching a power density of five hundred watts per liter while keeping full convection cooling and a broad operating range.
High Output In A Tight Mechanical Envelope
DIN rail supplies usually scale predictably in size as output power rises, which often forces system designers to compromise on spacing, airflow, or cable routing. The RACPRO1-S120 attempts to address this by holding its height to one hundred millimeters and its depth to one hundred and twelve millimeters while still covering ambient temperatures from minus forty degrees Celsius to sixty degrees Celsius without forced airflow. In practice this opens options for narrow cabinets and retrofits where thermal headroom is limited. The supply can also deliver up to one hundred and forty four watts at forty five degrees Celsius for baseline operation, with a brief surge capability that reaches one hundred and fifty percent for five seconds to absorb short lived load spikes.
Electrical Behavior Shaped For Industrial Loads
One detail worth noting is the return voltage capability at higher output settings. Inductive loads and motor driven circuits can push energy back into the supply during deceleration or fault recovery. RECOM specifies more than thirty five volts return tolerance for the twenty four volt configuration and more than sixty three volts for the forty eight volt version. This helps prevent nuisance trips or stress during back feed events. Universal single phase input or a wide DC input window from eighty eight volts to three hundred and seventy volts gives flexibility when systems run from rectified sources or DC buses. Active inrush limiting helps avoid large startup currents that can challenge upstream breakers in tightly specified installations.
Design Integration And Reliability Considerations
A DC OK signal is included for monitoring, which can be useful when coordinating supply sequencing across multiple rails or when tying health information into a supervisory controller. Radiated and conducted emissions fall within EN 61000-6-4 and the unit meetsEN IEC 61000-6-2 immunity requirements, which simplifies compliance checks for equipment intended to operate in noisy electrical environments. Safety certifications cover global standards including IEC, EN, UL and CSA for both 61010-1 and 61010-2-201. This combination supports long deployment cycles where regulatory alignment is critical.
Mechanical Handling And Lifetime Expectations
Installation is intended to be straightforward with tool less mounting and twenty five degree push in connectors that reduce wiring time during panel assembly. The supply weighs around three hundred and thirty grams and carries a lifetime expectancy of one hundred and eleven thousand hours at forty degrees Celsius. For engineers building automation racks, distribution cabinets or test benches with shifting load profiles, these margins allow the supply to operate inside predictable thermal and electrical limits without requiring additional airflow or external protection hardware.
Learn more and read the original announcement at www.recom-power.com
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