MEAN WELL RSP-320-48 320W 48V 1U Enclosed Power Supply with PFC

The MEAN WELL RSP-320-48 stands out as a high-density 320W single-output power supply in a slim 1U low-profile form factor, ideal for space-constrained industrial and networking installations. Unlike many competitors in this power class, it combines active power factor correction, a wide input voltage range, and a built-in fan with intelligent ON/OFF control to deliver reliable, efficient performance under demanding conditions.

Highlights

• 320W output power at 48V DC with adjustable voltage range 43.2–52.8V
• Active PFC (>0.95 at 230VAC) for improved energy efficiency and compliance
• Wide input range: 88–264VAC or 124–370VDC, suitable for global use
• 1U low-profile metal enclosure with built-in DC fan for optimal thermal management
• Comprehensive protections: short circuit, overload, over voltage, over temperature
• High reliability: MTBF >200,000 hours per MIL-HDBK-217F

In daily use

Engineered for continuous operation, the RSP-320-48 maintains stable output even in fluctuating mains conditions. Its active PFC reduces harmonic distortion, lowering energy costs and meeting international power quality standards. The fan's ON/OFF control extends fan life and reduces audible noise during low-load operation, making it suitable for office and light-industrial environments. The adjustable output voltage allows fine-tuning for specific load requirements, while the rugged metal case ensures durability in rack-mounted or standalone applications.

Full specifications

• Output power: 320W
• Output voltage: 48V DC (adjustable 43.2–52.8V)
• Output current: 6.7A
• Input voltage: 88–264VAC / 124–370VDC
• Input frequency: 47–63Hz
• Efficiency: 89%
• Ripple & noise: 150mVp-p
• Isolation voltage: I/P-O/P 3kVAC, I/P-FG 2kVAC, O/P-FG 0.5kVAC
• Operating temperature: -30°C to +70°C
• Safety standards: UL60950-1, TUV EN60950-1, CB, CE
• Leakage current: <2mA / 240VAC
• Setup, rise time: 1500ms, 50ms / 230VAC at full load

Final note

For system integrators and OEMs seeking a dependable, high-efficiency power solution in a compact 1U format, the MEAN WELL RSP-320-48 delivers proven performance and long-term reliability.