The ebm papst ACI 4420 MLR is a 230 Volt AC (VAC) 1.7 Watt GreenTech EC-Compact EC tubeaxial fan. It is a brushless DC (BLDC) motor, with a maximum speed of 13,500 RPM. The fan features a low power, low noise, and long service life. It is designed to provide precise speed control, high efficiency, and wide operating range, and high reliability. The fan is enclosed in a UL Recognized plastic housing with removable UL 94V-0 rated capacitor enclosure, and a DC leakage current of less than 3mA. The fan is a Class B insulation motor, rated for 10 million hours of operation, and is designed to be used in safe and hazardous locations. The fan also features a dynamic balance, customized bearing types, and various mounting options.