• Output Power: 405 W (with 23CFM Fan) / 253.8 W (Convection)
• Output Voltage: 54 V DC
• Output Current: 7.5 A (with 23CFM Fan) / 4.7 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-400-54

The MEAN WELL LOP-400-54 is a precision-engineered 400W low-profile open frame power supply specifically optimized for high-voltage DC applications such as PoE (Power over Ethernet) and advanced telecommunication infrastructure. Occupying a compact 5" x 3" footprint with an ultra-slim 27.5mm height, it provides an exceptional power density of 24.6W/in³. This model is designed for seamless integration into 1U chassis and is fully compliant with Over Voltage Category III (OVC III), allowing for a more direct and reliable connection to the building’s primary electrical distribution system while reducing installation complexity.

A standout characteristic of the LOP-400-54 is its multi-field safety certification, which includes Medical (2xMOPP), Industrial, and Household standards. With an extremely low leakage current of less than 70µA, it is perfectly suited for BF-rated medical devices that require a 54V rail. The unit offers superior thermal flexibility, delivering 253.8W under natural convection and achieving its full 405W output with forced-air cooling. Backed by a 150% peak load capacity for 3 seconds and a built-in 12V auxiliary fan output, it ensures maximum stability and surge protection for high-performance security systems and industrial automation networks.