4550N ebm-papst 4000 N Series Axial Fan, 230 V ac, AC Operation, 145m³/h, 16.5W, 119 x 119 x 38mm. The ebm-papst AC sleeve bearing axial fan is a high-tech cooling solution. The fan has 2550rpm motor speed. It has an extended ball bearing life that ensures fault-free use for a significant period of time (57,500 hours at 40°C). The ebm-papst AC fans provide a flexible and dependable cooling solution for applications that lets you mount it in any axial position. The fan has a power consumption rating of 16.5W and a supply voltage rating of 230VAC.