FB3G310-2AAB-67 Backward Curved Centrifugal Fan, 230VAC, 310mm, 4056.5 m3/h

When an air-moving challenge requires both high flow and high pressure, the FB3G310-2AAB-67 backward curved centrifugal fan from FANOVA delivers a rare combination that eliminates the need for multiple fans in series or parallel. This 230VAC EC model pushes up to 4056.5 m3/h of airflow while generating a static pressure of 1101 Pa, making it ideal for demanding industrial ventilation, HVAC systems, and high-resistance filtration setups. Thanks to its 310 mm die-cast aluminum impeller and 102 mm rotor, the fan achieves a powerful 700 W output at 2960 RPM, yet maintains a reasonable noise level of 85 dB(A) for its class. The built-in BLDC EC motor with a wide voltage range of 184 to 270 VAC ensures stable operation even in fluctuating grid conditions, and the plug-and-play design directly replaces traditional AC fans without external converters. With an IP55-rated housing, this unit is protected against dust and water jets, suitable for outdoor or washdown environments. The fan is equipped with an 18AWG, 1000mm cable for simple wiring, and the motor includes overcurrent, overvoltage, and thermal protection for reliable long-term service. Backed by CE and RoHS certifications, the FB3G310-2AAB-67 is a robust, energy-efficient solution for OEMs and end-users seeking a single, high-performance fan. Choose FANOVA for a custom-engineered centrifugal fan that meets your specific airflow and pressure requirements with ease.

The FB3G310-2AAB-67 is a premium backward curved centrifugal fan designed for high-performance air movement in demanding applications. At its core is a 310 mm diameter impeller cast from high-strength aluminum alloy, featuring backward-curved blades that optimize aerodynamic efficiency and reduce turbulence. This impeller design enables the fan to achieve a maximum airflow of 4056.5 m3/h and a maximum static pressure of 1101 Pa, making it suitable for systems with long duct runs, multiple outlets, or high-resistance filters such as HEPA. The impeller and end caps are both constructed from die-cast aluminum, providing excellent structural rigidity, corrosion resistance, and thermal conductivity, which extends the fan's service life in harsh environments. Driving the impeller is a 102 mm rotor BLDC EC motor that operates on 230VAC with a wide input range of 184-270VAC, ensuring consistent performance despite grid fluctuations. The EC motor technology integrates a permanent magnet synchronous motor and an onboard inverter, offering efficiency levels that exceed traditional AC induction motors by up to 30%, reducing energy consumption and operational costs. The motor delivers 700 W of power at a rated speed of 2960 RPM, with a current draw of 3.1 A, and incorporates closed-loop control for precise speed regulation. Control interfaces include analog 0-10V/4-20mA inputs and a PWM input, allowing seamless integration with building management systems (BMS) or external controllers for variable air volume (VAV) applications. Additionally, the motor features a built-in tachometer output for real-time speed monitoring and fault diagnostics. For safety and reliability, the fan is equipped with overcurrent, overvoltage, undervoltage, and thermal overload protection, as well as a locked-rotor protection function. The motor windings are insulated to Class F, and the housing has an IP55 protection rating, guarding against dust ingress and low-pressure water jets, which makes the fan suitable for outdoor installations, washdown areas, and dusty industrial settings. The fan is fitted with dual high-quality ball bearings that have an L10 life of over 40,000 hours at rated conditions, ensuring long-term trouble-free operation. Electrical connection is via a 1000 mm long 18AWG cable, which includes power, control, and signal wires, terminated with tinned ends for easy and secure wiring. The fan's construction complies with CE and RoHS directives, and the production process is ISO9001 certified, guaranteeing consistent quality and traceability. With its robust mechanical design, advanced EC motor, and high airflow/pressure capability, the FB3G310-2AAB-67 is an ideal choice for OEMs in the HVAC, cleanroom, agriculture, and industrial ventilation sectors, offering a drop-in replacement for less efficient AC fans while providing superior performance and controllability.

DC Backward Curved Centrifugal Fan
Type	FB3G310-2AAB-67
Model	BLDCEC102

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 FB3G310-2AAB-67 delivers 4056.5 m3/h at 1101 Pa while drawing only 700W, 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.