• Output Power: 502.2 W (with 23CFM Fan) / 321.3 W (Convection)
• Output Voltage: 27 V DC
• Output Current: 27.8 A (Peak) / 18.6 A (with Fan) / 11.9 A (Convection)
• Input Voltage Range: 80 – 264 V AC / 113 – 370 V DC, 47 – 63 Hz
• Efficiency: up to 94.5%
• Ripple & Noise: ≤ 150 mVp-p
• Inrush Current: 40 A @ 115 VAC / 80 A @ 230 VAC (Cold Start)
• No-load Power Consumption: < 0.5 W
• Operating Temperature: −40 °C to +80 °C
• Cooling: 320W free air convection, 500W with 23CFM forced air
• Protection Functions: Short Circuit, Overload, Over Voltage, Over Temperature
• Overvoltage 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 30.5 mm
• Weight: approx. 420 g
• Safety & EMC Certificates: CB, TUV, UL, CCC, RCM, EAC (62368-1, 60601-1, 60335-1, 61558-1)
• LED Indicator: Power On Indicator
• Manufacturer Warranty: 3 years

Information about the MEAN WELL LOP-500-27

The MEAN WELL LOP-500-27 is a high-efficiency 500W open frame power supply designed to deliver superior performance in a ultra-compact 5" x 3" footprint. With a remarkably slim profile of only 30.5mm, this unit provides a 27V output tailored for specialized industrial and communication systems that require a precise voltage level between standard 24V and 36V rails. It features an advanced thermal design that allows for 321.3W of power via natural convection, while reaching its full 502.2W potential with forced air cooling, ensuring maximum power density of 27.8W/in³ for space-constrained 1U applications.

Safety is a primary characteristic of the LOP-500-27, as it complies with multi-field global certificates including medical (2xMOPP), industrial, and household standards. Its Overvoltage Category III (OVC III) rating makes it suitable for direct connection to the main distribution panel, reducing the need for additional surge protection in many industrial automation and building control environments. The unit is also engineered for extreme reliability, capable of operating at altitudes up to 5000 meters and within a wide temperature range of -40 to +80 °C, all while being backed by a comprehensive 3-year manufacturer warranty.