NOCTUA NF-A4x10 24V PWM fan 40mm for industrial use

The Noctua NF-A4x10 24V PWM is a 40 mm fan with a compact 10 mm frame, designed for cooling in 24-volt systems. It suits industrial equipment, network devices, server cabinets and electronics enclosures where reliable and quiet airflow is required. The fan runs at up to 5000 rpm and is controlled through a 4-pin PWM connector, which adjusts its speed to the actual cooling demand. At a noise level of 19.6 dB(A), it remains largely unobtrusive even in quiet environments.

The model uses Advanced Acoustic Optimization, with integrated vibration buffers and Flow Acceleration Channels that reduce noise and vibration. The SSO2 bearing technology and Smooth Commutation Drive are designed to deliver an operating life of more than 150,000 hours. Built-in protection against reverse polarity, overvoltage, overcurrent and short circuits adds to operational safety.

Important: this fan is designed exclusively for 24 volts and cannot be operated at 12 V. It requires a start-up voltage of at least 17 V, so it is not intended for conventional PC applications such as case or CPU cooling.