NMB PWM series high performance, 4 wire cooling fans with tachometer signal provide high torque, efficient motor technology and aerodynamic impeller design. Pulse Width Modulation (PWM) drive units provide benefits which include increased fan life expectancy, energy efficiency, lower vibration and noise, and current spike protection. Units are suitable for router, switch, fuel cell, battery charger, data center, medical, broadcast equipment and industrial power supply applications. 
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