AFB1224HHE High-Performance Imported Fan for Efficient Cooling

Delta AFB1224HHE 120x120x38mm DC Brushless Axial Fan

The AFB1224HHE is a high-performance DC brushless axial fan manufactured by Delta Electronics, Inc. , a major Taiwanese multinational specializing in power electronics and thermal management solutions. Delta is one of the world's largest manufacturers of DC brushless fans and thermal management products, supplying OEM and ODM fans to major manufacturers of servers, telecommunications equipment, industrial automation systems, and power electronics globally. The AFB1224HHE is part of Delta's AFB series of industrial-grade DC axial fans, designed for continuous operation in demanding thermal management applications.

About Delta Electronics, Inc.

Delta Electronics, Inc.  was founded in 1971 in Taipei, Taiwan, and has grown into a global leader in power electronics and energy management solutions. Delta's core businesses include: switching power supplies, UPS systems, data center infrastructure, renewable energy solutions (solar inverters), and thermal management products including DC brushless fans. Delta is the world's largest manufacturer of DC brushless cooling fans by volume, supplying fans to major server, networking, telecom, and industrial equipment manufacturers worldwide. Delta's fan product line (branded as Delta Fans or Delta Thermal Management) covers a wide range of form factors, voltages, and performance levels for applications from consumer electronics to industrial equipment. Delta is publicly traded on the Taiwan Stock Exchange (TWSE: 2308) and operates global manufacturing and R&D facilities across Taiwan, China, Thailand, India, and Europe.

Fan Technology: DC Brushless Axial Fan

The AFB1224HHE is a DC brushless axial fan. Key characteristics:

• DC Brushless Motor: Unlike brushed DC fans which use physical carbon brushes to commutate the motor, the AFB1224HHE uses electronic commutation via Hall-effect sensors. This eliminates brush wear (a major failure mode in older fans), reduces electrical noise, and enables longer operational life. Brushless fans are the standard for modern industrial electronics cooling.

• Axial Flow Design: The AFB1224HHE is an axial fan — air flows parallel to the motor shaft, moving through the fan in a straight-line path. This design maximizes airflow volume (CFM) at low-to-moderate static pressure, making it ideal for cooling enclosures, heat sinks, and equipment bays where airflow is relatively unobstructed.

• Ball Bearing System: The AFB1224HHE uses a dual ball bearing system, which offers several advantages over sleeve bearings: higher speed capability (up to 3500 RPM for this model), better performance under shock and vibration, and significantly longer life in continuous operation, especially at elevated temperatures.

• Locked Rotor Protection: Built-in electronics detect when the rotor is mechanically blocked (locked) and automatically shut down current to the motor windings, preventing burnout and damage to the fan electronics and wiring.

• Polarity (Reverse Connection) Protection: The fan electronics are protected against accidental reverse polarity connection — a critical safety feature in industrial environments where wiring errors occur.

Technical Specifications

Weight Data Integrity Note

The invshop listing shows a weight of 2.000 kg (2kg) for this product. However, the official Delta AFB1224HHE datasheet and multiple distributor datasheets list the weight as approximately 256g–320g. This is a discrepancy of approximately 7x. The actual fan weight is under 0.3kg. The 2.000kg figure may be a data entry error — possibly the weight of an entire product package or a bulk quantity. The correct weight for a single AFB1224HHE fan is approximately 256–320g.

AFB1224HHE vs. AFB1224HHE-R00 — Speed Variant Clarification

The Delta AFB series has multiple speed variants for the same frame size. The two common variants are:

• AFB1224HHE (base): 3,500 RPM, 130.8 CFM, 47 dB-A — the higher-speed version suitable for higher heat loads or where maximum airflow is required.

• AFB1224HHE-R00: 2,900 RPM, 120.07 CFM, 44 dB-A — the lower-speed (and quieter) version for applications where noise is more important than maximum airflow, or where the thermal load is lower.

The invshop listing uses "AFB1224HHE" (without suffix), indicating the base high-speed variant. Both share the same 120x120x38mm form factor, voltage rating, and mechanical mounting dimensions, so they are drop-in interchangeable in most applications. The R00 variant is often used in noise-sensitive environments such as telecom shelters or indoor equipment rooms.

Applications

• Industrial Automation and Control Panels: Cooling PLCs, variable frequency drives (VFDs), servo amplifiers, and industrial power supplies. The 120x120x38mm form factor is an industry-standard size that fits most industrial enclosures and control cabinet designs.

• Server and Data Center Equipment: Cooling servers, storage arrays, network switches, and rack-mount power distribution units. Delta is a major OEM supplier to the server industry.

• Telecommunications Equipment: Cooling base station equipment, fiber optic transmission systems, microwave links, and telecom power modules. The wide operating temperature range (-10°C to +60°C) supports outdoor telecom cabinet installations.

• Power Electronics and UPS Systems: Cooling inverters, rectifiers, DC-DC converters, and uninterruptible power supplies. The 24VDC rating aligns with standard telecom and industrial power system bus voltages.

• Medical Equipment: Thermal management for diagnostic instruments, patient monitoring equipment, and laboratory analyzers. Delta's UL/CSA/VDE certifications facilitate medical equipment qualification.

• Renewable Energy Systems: Cooling solar inverter electronics, wind turbine control systems, and battery management system (BMS) electronics.

• Commercial Kitchen and HVAC Equipment: The AFB series is used in commercial cooking appliances, refrigeration equipment, and HVAC control systems where reliable 24/7 operation is required.

Installation Notes

• Airflow Direction: Confirm airflow direction is correct for your application. The AFB1224HHE rotates clockwise when viewed from the nameplate side, pushing air "away" from the nameplate. The air exhausts on the opposite side of the motor. Inlet is the nameplate side.

• Polarity: Connect red wire to +24VDC and black wire to 0V (ground). The fan has reverse-polarity protection but correct polarity ensures proper rotation direction and speed sensing if using tachometer output.

• Locked Rotor Current: When the rotor is blocked, the fan automatically shuts down. When the blockage is cleared, it restarts automatically. Note that during the locked-rotor condition, the fan may draw limited current.

• Parallel Mounting (Capacitor): For applications mounting multiple fans in parallel on the same power supply circuit, Delta recommends adding a ≥4.7µF bypass capacitor across the power supply to prevent interaction between fan speed control circuits.

• Acoustic Noise: At 47 dB-A, this fan is audible in quiet environments. For noise-critical applications, consider the AFB1224HHE-R00 variant (44 dB-A) or install the fan remotely with ducting to isolate the noise source.

Frequently Asked Questions