MEAN WELL RS-15-48 Fuente de alimentación cerrada de 15W 48V DC con protección contra sobrecarga, sobretensión y cortocircuito, carcasa metálica, entrada 85-264V AC

The RS-15-48 stands out in the compact power supply class by delivering a full 15 watts from a rugged metal enclosure that shrugs off industrial environments. Unlike open-frame boards that demand extra mounting hardware and airflow management, this unit is fully enclosed and relies on free air convection—no fan, no noise, no maintenance. Its 48 V DC output is tightly regulated for sensors, controllers, and small automation loads, while the universal AC input range means it can be deployed anywhere from a 115 V North American panel to a 230 V European cabinet without a selector switch.

Highlights

• Universal input: 85–264 V AC (47–63 Hz) or 120–370 V DC
• Single isolated 48 V DC output, 0.31 A continuous
• Comprehensive protection: short circuit, overload, over voltage
• Metal case with free air convection cooling—no fan required
• Wide operating temperature range: -20 °C to +70 °C
• High efficiency up to 85% reduces heat and energy costs
• Compact footprint fits tight DIN-rail and panel installations
• Certified to UL60950-1, TUV EN60950-1, CB, CE

In daily use

Installation is straightforward: connect the AC line to the screw terminals, wire the 48 V DC output to your load, and the RS-15-48 is ready. The metal housing provides mechanical protection and acts as a heat sink, so no derating is needed up to 50 °C ambient. At higher temperatures the output power derates linearly, but the unit remains stable. The built-in protections prevent damage from accidental short circuits or load surges, and the 3000 V AC isolation between input and output ensures safe operation in mixed-voltage systems. Ripple and noise are kept to 200 mVp-p, making the RS-15-48 suitable for sensitive analog circuits and digital logic.

Full specifications

• Output power: 15 W
• Output voltage: 48 V DC
• Output current: 0.31 A
• Input voltage (AC): 85–264 V AC
• Input voltage (DC): 120–370 V DC
• Input frequency: 47–63 Hz
• Input current: 0.35 A at 115 V AC, 0.25 A at 230 V AC
• Efficiency: 85%
• Protection: short circuit, overload, over voltage
• Operating temperature: -20 °C to +70 °C
• Storage temperature: -40 °C to +85 °C
• Enclosure material: metal
• Cooling: free air convection
• Number of outputs: 1
• Ripple & noise: 200 mVp-p
• Isolation voltage (input to output): 3000 V AC
• Certifications: UL60950-1, TUV EN60950-1, CB, CE

Final note

The RS-15-48 is a workhorse power supply that balances cost, size, and reliability. Its metal case and conservative design make it a favorite for industrial control panels, LED lighting drivers, and test equipment where a quiet, fanless 48 V rail is essential.