A 24V DC 50mm Sunon Maglev/Vapo Bearing Cooling Fan (#MF50152VX-1000U-A99) with thermoplastic frame. Designed for long-life and minimal noise operation. Sunon® fans are manufactured to a very high standard and hold CSA and UL listings. Altronics has been a Sunon distributor for many years and have found them to be of excellent overall quality and reliability. Specifications Mechanical Characteristics Motor Design: Single phase, 4 poles brushless DC motor Bearing System: Vapo bearing system Frame Material: Thermoplastic PBT of UL94V-0 Blade Material: Thermoplastic PBT of UL94V-0 Direction of Rotation: Counter clockwise viewed from the front of the fan blade Mounting Holes: 4x 4.3mm holes Weight: 33g Dimensions: 50 x 50 x 15mm Electrical Characteristics Rated Voltage: 24V DC Rated Current: 55mA (64mA max) Rated Power Consumption: 1.32W (1.54W max) Safety Power Consumption: 1.40W Operating Voltage Range: 8~27.6V DC Starting Voltage: 8V DC (25°C Power On/Off) Operating Temperature: -10°C ~ +70°C Storage Temperature: -40°C ~ +70°C Performance Characteristics Rated Speed: 7200 RPM ±15% at rated voltage Air Flow: 18.6 CFM Static Pressure: 0.31 Inch-H2O Noise Level: 38.1dB(A) Insulation Class: UL Class A Insulation Resistance: 10MΩ at 500V DC between internal stator and lead wire (+) Dielectric Strength: 500V AC for one minute or 600V AC for 2 seconds between housing and lead wire (+) Life Expectancy: 60,000 hours at 40°C, 65% RH, 90% CL Protection: Automatic restart, polarity protection