• Output Power: 403.2 W (with 23CFM Fan) / 254.4 W (Convection)
• Output Voltage: 48 V DC
• Output Current: 8.4 A (with 23CFM Fan) / 5.3 A (Convection)
• Input Voltage Range: 80 – 264 V AC / 113 – 370 V DC, 47 – 63 Hz
• Efficiency: up to 95%
• Ripple & Noise: 200 mVp-p
• Inrush Current: 40 A @ 115 VAC / 80 A @ 230 VAC
• No-load Power Consumption: 0.5 W
• Operating Temperature: −40 °C to +80 °C
• Cooling: Free air convection or forced-cooled with external fan
• Protection Functions: Short circuit, Overload, Over voltage, Over temperature
• Over Voltage Category: OVC III
• Isolation Voltage: 4000 V AC between Input and Output
• Dimensions (L x W x H): 127 mm x 76.2 mm x 27.5 mm
• Weight: 0.39 Kg
• Safety & EMC Certificates: CB, TUV, UL, CCC, RCM, EAC, CE
• LED Indicator: Power On Indicator
• Manufacturer Warranty: 3 Years

Information about the MEAN WELL LOP-400-48

The MEAN WELL LOP-400-48 is a high-performance 400W low-profile open frame power supply delivering a stable 48V DC output, optimized for modern telecommunications and advanced industrial networking. Housed in a compact 5" x 3" footprint with an ultra-slim height of 27.5mm, it offers a superior power density of 24.6W/in³. This unit is uniquely engineered for high-voltage efficiency, supporting a universal 80-264VAC input and maintaining Over Voltage Category III (OVC III) compliance, which allows for direct and safe connection to the primary distribution panels in industrial environments.

A primary strength of the LOP-400-48 is its comprehensive multi-standard certification, covering Medical (2xMOPP), Industrial (61558-1), and Household (60335-1) safety standards. Its extremely low touch leakage current of less than 70µA makes it an ideal choice for BF-rated medical equipment requiring higher voltage rails. The device excels in thermal management, providing 254.4W under natural convection and reaching its full 403.2W potential with forced-air cooling. With a 150% peak load capacity for 3 seconds and a built-in 12V auxiliary fan output, it provides the reliability and surge capability necessary for professional Power over Ethernet (PoE) systems and sophisticated automation hardware.