FB3G310-2APK-90 Backward Curved Centrifugal Fan, 230VAC, 310mm, 2880 m3/h

When ventilation demands exceed what conventional single fans can deliver, the FB3G310-2APK-90 backward centrifugal fan from FANOVA redefines airflow expectations. Engineered with a 310 mm glass-fiber reinforced polypropylene impeller, this unit pushes a maximum airflow of 2880 m³/h, enabling one fan to replace multiple smaller units in high-volume applications. The integrated BLDCEC92 motor operates on a wide 230VAC input range of 184 to 277V, providing hassle-free plug-and-play installation for AC replacement projects. With a power consumption of only 180W at 1800 RPM, it delivers exceptional energy efficiency while maintaining a quiet 66 dB(A) noise level—suitable for environments where background sound matters. The fan achieves a maximum static pressure of 453 Pa (1.8 in.wg), making it capable of overcoming moderate duct resistance and filter loads. Its low-speed, large-impeller design contributes to reduced operational noise and extended mechanical lifespan. The die-cast aluminum housing ensures robust durability and effective heat dissipation, while the 20AWG cable (179mm) offers straightforward electrical integration. Certified for reliability, the FB3G310-2APK-90 is ideal for HVAC systems, ventilation units, and cleanroom equipment, delivering consistent performance in commercial and industrial settings. FANOVA's commitment to OEM/ODM quality ensures this fan meets rigorous international standards for performance and safety.

The FB3G310-2APK-90 is a backward-curved centrifugal fan that leverages a large-diameter impeller to achieve superior aerodynamic efficiency with minimal noise. The impeller, measuring 310 mm in diameter, is injection-molded from polypropylene reinforced with glass fiber, offering an excellent strength-to-weight ratio, chemical resistance, and dimensional stability under varying temperatures. This material choice contributes to reduced rotational inertia, allowing rapid speed changes and lower starting torque requirements. The fan's housing and endcaps are precision die-cast from aluminum alloy, providing a rigid structure that minimizes vibration and ensures long-term alignment of the rotating assembly. The heart of the system is the BLDCEC92 motor, a brushless DC motor with integrated EC (electronically commutated) control electronics. Operating on a nominal 230VAC supply with a wide input range of 184 to 277VAC, the motor delivers variable speed control via a 0-10V analog input or PWM signal, enabling precise airflow modulation to match system demand. The motor draws a maximum current of 1.4A and consumes 180W at full speed (1800 RPM), achieving an efficiency that surpasses traditional AC motors, especially under partial load conditions. This EC technology also provides soft-start functionality, reducing inrush current and mechanical stress. The fan is capable of delivering up to 2880 m³/h (1694.9 CFM) of airflow and a maximum static pressure of 453 Pa (1.8 in.wg), making it suitable for ducted systems with moderate resistance. For electrical protection, the motor includes overcurrent, overvoltage, undervoltage, and thermal overload safeguards, with the winding insulated to Class F (155°C) to withstand harsh operating conditions. The rotor, with a diameter of 92 mm, is dynamically balanced and coupled to sealed ball bearings that offer a rated life of 50,000 hours at a maximum ambient temperature of 60°C, ensuring maintenance-free operation in demanding HVAC environments. The electrical interface consists of a 20AWG cable with a length of 179mm, terminated with a standard Molex or equivalent connector for easy wiring. The fan is designed to comply with CE and RoHS directives, and FANOVA's ISO9001 quality management system guarantees consistent manufacturing tolerances. This model's low-speed operation at 1800 RPM, combined with its backward-curved blades, results in a broad operating range with stable performance, making it an excellent choice for energy-conscious OEMs and end-users seeking reliable air movement with minimal acoustic footprint.

DC Backward Curved Centrifugal Fan
Type	FB3G310-2APK-90
Model	BLDCEC92

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 FB3G310-2APK-90 delivers 2880 m3/h at 453 Pa while drawing only 180W, achieving 30-40% energy savings over equivalent AC fans through FANOVA's BLDC motor technology.

2. Industrial-Grade Impeller: The 310mm 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 310mm 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.