NMB Cooling Fan 04020VA-24P-BL 24V

NMB Cooling Fan 04020VA-24P-BL 24V is a compact Brushless DC (BLDC) axial fan manufactured by NMB Technologies Corporation. This fan is designed to cool electronic devices, power modules, and tight spaces where a powerful and reliable airflow is required.

Specifications of NMB Cooling Fan 04020VA-24P-BL 24V:
Voltage: 24V DC
Current: 0.13A
Dimensions: 40 x 40 x 20 mm
Speed: 9500 ± 10%
Lifespan: 50000 hours
Noise Level: 34.6 dB
Weight: 33 grams

Highlights

1. Reputable Brand NMB: NMB is one of the world's leading cooling fan manufacturers, renowned for product reliability, performance, and longevity. NMB fans are trusted in high-quality demanding applications.
2. Compact Size, High Performance: With dimensions of only 40x40x20 mm, a rotational speed up to 9500 RPM, and significant airflow (11.3 CFM), this fan is ideal for cooling electronics, power modules, and restricted space areas.
3. Long Lifespan (Ball Bearing): Uses Ball Bearings ensuring a very long operating life, suitable for continuous and stable long-term applications.
4. Integrated Tachometer Signal (3-wire): A major operational advantage. The third wire provides rotational speed feedback. This allows the host system to monitor fan status, detect fan failures (e.g., stopped, lower than rated speed), and issue alerts or adjustments, increasing system reliability.
5. Low Noise Relative to Performance: At high speeds, the noise level is only about 34.6 dB, achieving a good balance between cooling performance and noise.
6. Stable Operation at 24 VDC: 24 VDC is standard in many industrial and electronic systems, allowing easy integration into existing control circuits and power supplies.
7. Material Durability: Frame and blades made of high-quality plastic, flame retardant, and heat resistant, ensuring durability in operating environments.

Effective Usage Guide

1. Ensure Proper Power Supply: Only connect to a 24 VDC power source with sufficient current (0.13 A or more) and stability. Incorrect polarity or voltage can damage the fan. Red wire is typically positive (+), black is negative (-). The third wire (yellow or white) is the Tachometer signal.
2. Connect Tachometer Signal Wire: If your system requires speed monitoring, connect the 3rd wire to a compatible microcontroller or monitoring circuit. This signal is usually a square wave.
3. Check Airflow Direction: Ensure correct installation (suction or blow) as required. Arrows on the frame indicate airflow and rotation direction.
4. Installation Position: Install in a position with enough clearance for intake and exhaust. Avoid overly dusty or humid environments unless properly rated.
5. Periodic Cleaning: Regularly inspect and clean dust on blades and guards to maintain airflow and cooling performance.
6. Use Fan Guards: Recommended to prevent fingers or foreign objects from entering the blades, especially for high-speed fans.

Notes on Use

1. Power Control: Operating outside recommended voltage ranges can damage the fan or shorten lifespan.
2. Ventilation Space: Ensure unhindered airflow around the fan for optimal cooling.
3. Avoid Dust and Moisture: Without a high IP rating, avoid excessively dusty or damp environments.
4. Monitor Tachometer Signal: Ensure proper connection and reading if speed monitoring is relied upon.
5. Avoid Heavy Impact: Can damage bearings or blades, causing noise or performance loss.

NMB Cooling Fan 04020VA-24P-BL 24V is a compact, powerful, and reliable cooling solution. With 40x40x20 mm dimensions, standard 24 VDC voltage, durable ball bearings, and Tachometer signal capability, it is ideal for electronic and industrial systems requiring high reliability and monitoring in restricted spaces.