FD3G146-24GL-92 Dual Inlet Centrifugal Blower, 24VDC, 146mm, 1220.6 m3/h

The FD3G146-24GL-92 is a dual inlet centrifugal blower engineered to redefine quiet operation without compromising airflow, delivering a maximum flow of 1220.6 m3/h while maintaining a sound level of just 63 dB(A)—quieter than a normal conversation. This 24VDC blower operates across a wide 16 to 28V input range, making it an ideal low-voltage solution for solar-powered systems, off-grid ventilation, and new energy applications where safety and efficiency are paramount. At its core, the FD3G146-24GL-92 features a 146mm galvanized steel sheet impeller, chosen for industrial-grade durability, corrosion resistance, and long service life in demanding environments. The robust brushless DC motor (BLDCDC92) delivers 110.4W of power at 1350 RPM, producing a static pressure of up to 544 Pa to overcome duct resistance and filter loading. This dual inlet design doubles the intake area, ensuring balanced, high-volume airflow for HVAC units, medical equipment, and laboratory enclosures where consistent performance and low noise are critical. The blower is equipped with a 20AWG cable (209mm length) for straightforward integration, and the die-cast aluminum housing provides excellent thermal dissipation and structural integrity. With protections including reverse polarity and locked-rotor safeguards, the FD3G146-24GL-92 ensures reliable operation in continuous-duty cycles. Certified for global markets, this blower meets CE and RoHS standards, and its high-quality ball bearings are rated for 50,000 hours at 40°C. Whether used in telecom cabinets, battery storage systems, or clean-air equipment, the FD3G146-24GL-92 combines whisper-quiet acoustics with rugged steel construction, offering OEMs a dependable dual inlet solution that stands apart from standard plastic-impeller fans. Choose FANOVA for a blower that prioritizes both noise reduction and industrial longevity in every specification.

The FD3G146-24GL-92 is a high-performance dual inlet centrifugal blower designed for applications requiring a unique balance of low acoustic output and robust mechanical resilience. The impeller, constructed from galvanized steel sheet with a diameter of 146mm, is a deliberate engineering choice that provides superior resistance to corrosion, wear, and thermal stress compared to plastic alternatives. The steel blades are precision-formed and dynamically balanced to minimize vibration and acoustic resonance, enabling the blower to achieve a noise rating of 63 dB(A) at the rated operating point, which is below the threshold of typical office or laboratory ambient noise. The blower is driven by a brushless DC motor (BLDCDC92) featuring a rotor diameter of 92mm, which utilizes high-energy permanent magnets and a sensorless commutation algorithm to deliver efficient, maintenance-free operation. The motor's electrical design accommodates an input voltage range of 16 to 28VDC, with a nominal rating of 24VDC, allowing seamless integration into battery-backed or renewable energy systems where voltage fluctuation is common. At the nominal voltage, the blower draws 4.6A and consumes 110.4W, generating a maximum airflow of 1220.6 m3/h (718.3 CFM) in free air and a maximum static pressure of 544 Pa (2.18 in.wg) at zero flow. The performance curve is optimized for systems with moderate static resistance, such as HEPA-filtered enclosures or long duct runs, where the dual inlet configuration ensures balanced intake from both sides, reducing turbulence and improving volumetric efficiency. Speed control is achieved via PWM input or variable DC voltage, providing users with flexible modulation of airflow from 0 to 1350 RPM; the motor driver includes soft-start functionality to limit inrush current, which is critical in DC-powered systems with limited power budgets. For electrical safety, the motor incorporates reverse polarity protection, overcurrent limiting, and locked-rotor auto-restart, while the insulation system is rated Class B (130°C), ensuring stable performance under elevated ambient temperatures. The die-cast aluminum endcaps and housing not only protect the internal components from dust and mechanical impact but also act as a heat sink, dissipating motor losses and extending component life. The shaft is supported by dual ball bearings that are pre-lubricated and sealed, rated for a service life of 50,000 hours at 40°C ambient, making the FD3G146-24GL-92 suitable for continuous 24/7 operation in critical infrastructure. Electrical connection is simplified via a 209mm lead wire using 20AWG conductors, which is robust enough for secure crimping and resistant to flex fatigue. The blower's overall dimensions and mounting footprint are optimized for drop-in replacement in existing HVAC systems, with a compact profile that eases integration into space-constrained equipment. Quality assurance follows ISO9001 procedures, and the unit is CE and RoHS certified, ensuring compliance with European Directives. FANOVA's FD3G146-24GL-92 is thus a compelling choice for engineers seeking a dual inlet blower that offers the longevity of steel construction, the safety of 24VDC operation, and the acoustic finesse required for noise-sensitive environments.

DC Dual Inlet Centrifugal Blower
Type	FD3G146-24GL-92
Model	BLDCDC92

Ⅰ.When taking out the fan, do not directly lift the fan lead wire. If the lead wire is excessively stressed, the internal welding part may fall off

Ⅱ.Do not plug or unplug the fan lead plug when the fan is running

Ⅲ.If the fan does not work after starting, do not touch the impeller, rotor, or other parts, professional technical personnel are required to inspect the fan to prevent sudden start of the fan from causing hand or other personal injury

Ⅳ.The power line and control line of the fan cannot be connected in reverse, otherwise it will burn out

Ⅴ.Because of the soft start characteristics of the fan, to prevent personal injury, do not touch the impeller or other parts of the fan during powered on or running at low speeds

Ⅵ.The fan needs to be operated and used under the guidance of professional personnel to prevent children from coming into touch this product

Ⅶ.If the power line is worn or damaged, it needs to be returned to the manufacturer for repair or be replaced under the guidance of the manufacturer

Ⅷ.As a part of the fan, it is not recommended to use the motor alone when there is no impeller or loading

1. High Efficiency: The FD3G146-24GL-92 delivers 1220.6 m3/h at 544 Pa while drawing only 110.4W, achieving 30-40% energy savings over equivalent AC fans through FANOVA's BLDC motor technology.

2. Industrial-Grade Impeller: The 146mm galvanized steel sheet impeller resists corrosion, wear and high temperatures, making the fan suitable for harsh industrial environments and corrosive gas streams.

3. Wide Application Range: Suitable for industrial ventilation, dust extraction, HVAC units, agricultural ventilation and new-energy equipment, offering flexible customized solutions (OEM/ODM).

4. Sustainable Development: Low-voltage DC operation enables direct solar and battery integration; recyclable steel impeller and optimized BLDC drive meet eco-friendly requirements with long-term reliability.

5. Easy Installation and Maintenance: Compact 146mm footprint, 0-10VDC/PWM speed control, FG tach output and standard cable make the fan simple to wire, control and service.

Q1:What kind of payments do you support?

A1: For sample order, 100% payment in advance; For batch order, 30% in advance and 70% will be paid before shipping

Q2.Will you provide samples?

A2: Sample is available and can be delivered within 10days

Q3:How can I choose a more suitable model?

A3: We need the information like fan type, quantity, size, material, voltage, air flow and static pressure.

Q4:How can I place the order?

A4:  Usually quote you within 24 hours  after  we get your inquiry. First sign the PI,pay deposit,then we will arrange the production.After finished production need you pay balance. Finally we will ship the Goods.

Q5:About transportation

A5: All available shipping ways could be applied, express shipping, air or sea. Appointed shipping company or our own forwarders all could be used in shipment. Full-way tracking the cargos for you before the goods arrive. 

Q6:How long is the warranty period?

A6: We currently offer 3-year quality guarantee for our own products, and in response to current product problems, our company provides line support, and some customers have been able to improve their products.