MEAN WELL RSP-320-27 321.3W 1U Enclosed Power Supply with PFC, 27V 11.9A, Active PFC, Fan Cooled

When industrial equipment demands stable, high-density power in a slim 1U profile, the MEAN WELL RSP-320-27 delivers 321.3 watts of clean 27 VDC output. Its active power factor correction and universal AC input make it a reliable backbone for automation, test systems, and LED installations that cannot tolerate voltage sag or thermal shutdown.

Who is it for

System integrators, panel builders, and maintenance engineers who need a compact, fan-cooled power supply for 24/7 operation in control cabinets, machinery, or communication racks. It suits applications where space is limited but power demand is high, such as industrial PCs, motor drives, and large-format displays.

Main features

• High efficiency up to 89% reduces energy waste and cooling load.
• Active PFC (PF>0.95) meets EN61000-3-2 harmonic current requirements.
• Built-in DC fan with ON/OFF control for quiet operation at low loads.
• Comprehensive protections: short circuit, overload, over voltage, and over temperature.
• Remote ON/OFF and remote sense for flexible system integration.
• DC OK signal output for real-time status monitoring.
• Adjustable output voltage from 24.3 to 30 VDC via front-panel potentiometer.
• Wide operating temperature range: -30°C to +70°C (derating above 50°C).
• 3 kVAC isolation between input and output for safety.
• Certified to UL60950-1, TUV EN60950-1, and CE.

Specifications

• Output power: 321.3 W
• Output voltage: 27 VDC (adjustable 24.3–30 VDC)
• Output current: 11.9 A
• Ripple & noise: 150 mVp-p
• Input voltage: 88–264 VAC / 124–370 VDC
• Input frequency: 47–63 Hz
• Efficiency: 89%
• Form factor: 1U low profile enclosed (215 x 115 x 30 mm)
• Cooling: Built-in DC fan with ON/OFF control
• Protections: Short circuit, overload, over voltage, over temperature
• Operating temperature: -30°C to +70°C
• Isolation voltage: 3 kVAC (input to output)
• Certifications: UL60950-1, TUV EN60950-1, CE

Tips

For convection-cooled installations, derate the output by 2.5% per °C above 50°C. Use twisted pair wiring for remote sense to maintain voltage accuracy at the load. The DC OK signal can drive an LED or logic input for early warning of output failure. Mount with adequate clearance for fan airflow; avoid blocking the ventilation slots.