FB3G280-110AB-67 Backward Curved Centrifugal Fan, 110VDC, 280mm, 3656.1 m3/h

This powerful 280 mm backward centrifugal fan delivers an exceptional maximum airflow of 3656.1 m³/h without sacrificing pressure capability, making it a true workhorse for demanding ventilation and HVAC applications. The FB3G280-110AB-67 operates on a 110 VDC high-voltage DC bus, which enables low-current distribution over long cable runs—perfect for industrial DC microgrids and new energy installations. With a maximum static pressure of 1158 Pa, this fan easily overcomes high-resistance ductwork, HEPA filters, and multi-outlet manifolds, ensuring consistent performance in critical environments. The integrated BLDCDC102 brushless DC motor provides high efficiency and a long service life, while the die-cast aluminum impeller and housing guarantee robustness and corrosion resistance for continuous industrial duty. This model is designed for easy speed control via 0-10 V analog input or PWM, and it features overcurrent, overvoltage, and thermal protection for reliable operation. The fan's large 280 mm impeller allows lower rotational speeds for a given airflow, contributing to quieter operation despite its high output. Built for 110 VDC systems, it eliminates the need for transformers in certain installations, simplifying integration into battery-backed or solar-powered setups. Typical applications include industrial ventilation, HVAC air handling units, cleanroom filtration, and energy storage cooling, where high static pressure and airflow are non-negotiable. Backed by CE, UL, and RoHS certifications, this fan delivers a professional-grade solution for OEMs and system integrators seeking a dependable high-performance airflow component.

The FB3G280-110AB-67 is a high-performance backward centrifugal fan engineered for severe-duty environments that demand both high volumetric flow and elevated static pressure. The impeller has a 280 mm diameter and is precision die-cast from aluminum alloy, featuring a backward-curved blade design that maximizes aerodynamic efficiency and reduces turbulence. This blade configuration generates a steep pressure curve, enabling stable operation even when system resistance fluctuates, which is critical for applications with variable filter loading or long duct runs. The fan housing and end cap are also die-cast aluminum, providing excellent structural rigidity and heat dissipation while resisting corrosion in humid or mildly aggressive industrial atmospheres. At the core of this unit sits a BLDCDC102 brushless DC motor with a 102 mm rotor diameter, delivering up to 700 W of shaft power at a rated speed of 3270 RPM. The motor uses a sensorless vector control algorithm to achieve high torque density and smooth operation across the entire speed range. Speed regulation is implemented via an external 0-10 V analog signal or PWM input, both of which are standard interfaces on the provided control cable, allowing seamless integration with building management systems or custom controllers. Electrical ratings include a nominal input of 110 VDC with a ±15% tolerance, drawing a maximum current of 6.4 A, which keeps power distribution efficient and minimizes conductor losses in multi-fan arrays. The fan is protected against overvoltage, undervoltage, overcurrent, and over-temperature conditions, with automatic restart after fault recovery. Insulation class H and a ruggedized motor design ensure reliable operation in ambient temperatures from -20 °C to +60 °C. The bearing system utilizes dual ball bearings with a rated L10 life in excess of 40,000 hours at the maximum rated temperature, reducing maintenance intervals and total lifecycle costs. Electrical connection is made via a 226 mm lead wire of 18 AWG, terminated with a standard connector that simplifies field wiring. In terms of performance, the fan delivers a maximum airflow of 3656.1 m³/h (2151.6 CFM) at free air and a maximum static pressure of 1158 Pa (4.63 in.wg) at zero flow, with a combined performance curve suitable for high-resistance systems such as HEPA-filtered exhaust, industrial ovens, and clean benches. The unit meets CE, UL, and RoHS compliance standards and is manufactured under ISO 9001 quality management systems, ensuring consistent output and traceability. Every unit is fully tested for performance and safety before shipment, guaranteeing that the FB3G280-110AB-67 delivers the reliability and performance expected from a FANOVA OEM/ODM product.

DC Backward Curved Centrifugal Fan
Type	FB3G280-110AB-67
Model	BLDCDC102

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 FB3G280-110AB-67 delivers 3656.1 m3/h at 1158 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 280mm 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 280mm 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.