• Output Power: 300 W (with Fan) / 180 W (Convection)
• Output Voltage: 12 V DC (adj. range 11.4 – 12.6 V)
• Output Current: 25 A (with Fan) / 15 A (Convection)
• Input Voltage Range: 80 – 264 V AC / 113 – 370 V DC, 47 – 63 Hz
• Efficiency: up to 92.5%
• Ripple & Noise: ≤ 120 mVp-p
• Inrush Current: max. 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-air (10.98 CFM)
• Protections: 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): 101.6 mm x 50.8 mm x 25.4 mm
• Weight: approx. 210 g
• Safety & EMC Certificates: CB, UL, TUV, EAC, CE (62368-1, 60601-1, 60335-1, 61558-1)
• LED Indicator: Power On Indicator
• Manufacturer Warranty: 3 Years

Information about the MEAN WELL LOP-300-12

The MEAN WELL LOP-300-12 is a high-performance, 300W low-profile open frame power supply designed to meet the rigorous demands of modern electronics. Featuring an ultra-compact 4" x 2" footprint and a height of only 1 inch (25.4mm), it delivers a remarkable power density of 37.5W/in³. This series stands out due to its versatile multi-field certifications, complying with safety standards for ITE, medical (2xMOPP), household appliances, and industrial installations. With an Over Voltage Category III (OVC III) rating, the LOP-300-12 is exceptionally robust, allowing for direct integration into power distribution panels while ensuring superior protection against voltage surges in demanding environments.

Engineered for maximum reliability, this power supply provides 180W under natural convection and can be boosted to 300W with forced-air cooling, supported by a built-in 12V auxiliary fan output. It is highly efficient, reaching up to 92.5% efficiency, which minimizes heat generation and supports a wide operating temperature range from -40 °C to +80 °C. Its unique ability to handle 150% peak loads for 3 seconds makes it perfect for applications with high inductive or capacitive start-up currents, such as motorized medical devices, industrial automation systems, and high-speed telecom equipment. The extremely low touch leakage current (<70 µA) further ensures its suitability for BF-rated medical apparatus, providing a safe and cost-effective solution for global power requirements.