EN
FB3G355-2AAS-30
| Nominal Voltage | VAC | 230 |
| Current draw | A | 4.57±10% |
| Speed(RPM) | min-1 | 2330±5% |
| Power consumption | W | 1050±10% |
| Max. Air Flow | CFM / m3 /H | 3417.4/5807 |
| Max. Static Pressure | In.wg /Pa | 3.66/914 |
10pcs
The FB3G355-2AAS-30 is a powerhouse backward centrifugal fan engineered to replace multiple smaller fans with a single, high-capacity unit, delivering a maximum airflow of 3417.4 CFM (5807 m³/h) to meet the demands of heavy-duty ventilation and HVAC systems. Operating on a 230VAC EC motor with a wide input range of 184 to 270 volts, this fan offers plug-and-play compatibility for retrofit AC applications while maintaining superior efficiency. At 2330 RPM and 1050W power, it generates a robust static pressure of 3.66 In.wg (914 Pa), making it ideal for long duct runs, high-resistance filters, and multi-outlet distribution networks. The 355mm die-cast aluminum impeller and endcap ensure exceptional durability and corrosion resistance, suitable for continuous industrial operation. Equipped with a BLDCEC137 motor, the fan provides precise speed control and low noise at 84.5 dB(A), balancing performance with acoustic comfort. The 18AWG cable (1000mm) simplifies installation, while the unit meets rigorous quality standards for global OEM and ODM projects. Applications include cleanrooms, commercial kitchen exhaust, agricultural ventilation, and process cooling, where high airflow and pressure are critical. Choose FANOVA for a reliable, energy-saving single-fan solution that cuts system complexity and operational costs.
The FB3G355-2AAS-30 backward centrifugal fan is built for high-capacity air movement, featuring a 355mm die-cast aluminum impeller with backward-curved blades that optimize aerodynamic efficiency and reduce turbulence-induced noise. The impeller and endcap housing are both crafted from aluminum alloy, offering a lightweight yet robust structure that resists corrosion and mechanical stress, ensuring a long service life in harsh industrial environments. The integrated BLDCEC137 motor is a brushless DC electronically commutated design, operating on 230VAC (184–270V range) to deliver 1050W of shaft power at a rated speed of 2330 RPM. This EC technology provides high efficiency across the operating envelope, significantly reducing energy consumption compared to traditional AC induction motors, and offers 0–10V PWM or analog speed control interfaces for seamless integration with building management systems. The fan's performance envelope includes a maximum airflow of 3417.4 CFM (5807 m³/h) and a maximum static pressure of 3.66 In.wg (914 Pa), enabling it to overcome system resistance from long ductwork, HEPA filters, or multiple branch outlets. Electrical ratings include a nominal current of 4.57A, and the motor is protected with thermal overload and locked-rotor safeguards, along with Class F insulation to withstand high operating temperatures. Bearings are high-precision sealed ball bearings with a rated life of over 40,000 hours at 70°C ambient, ensuring maintenance-free operation for years. The electrical interface uses an 18AWG cable with a length of 1000mm, pre-wired for quick connect, and the fan assembly is balanced to G2.5 per ISO 1940 to minimize vibration. Certifications include CE, UL, and RoHS compliance, making it suitable for global OEM projects across HVAC, refrigeration, and clean technology sectors. Rigorous quality control ensures each unit meets FANOVA's standards for performance and reliability, backed by a comprehensive warranty.
| DC Backward Curved Centrifugal Fan |  |
|
| Type | FB3G355-2AAS-30 | |
| Model | BLDCEC137 | |
| Nominal Voltage | VAC | 230 |
| Voltage range | VAC | 184~270 |
| Current draw | A | 4.57±10% |
| Speed(RPM) | min-1 | 2330±5% |
| Power consumption | W | 1050±10% |
| Sound Pressure Level | dB(A） | 84.5±5% |
| Max. Air Flow | CFM / m3 /H | 3417.4/5807 |
| Max. Static Pressure | In.wg /Pa | 3.66/914 |
| Insulation class | ~ | Class B |
| Degree of protection | ~ | IP44 |
| Control Input | ~ | 0~10VDC / PWM |
| Signal Output | ~ | FG (Tach output ) |
Remarks：
Ⅰ. Standard cable length Refer to the figure below. The length of cable can be customized
Ⅱ. Conventional mode is 0-10V/PWM control, can optionally replace the communication protocol, detailed communication protocol, please contact technical personnel
Test condition：
Ⅰ.The test data is obtained under the specified environment conditions and installation mode
Ⅱ.Input Voltage---Operating voltage
Ⅲ.Temperature---Room temperature 25℃
Ⅴ.Humidity---65%RH
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 FB3G355-2AAS-30 delivers 5807 m3/h at 914 Pa while drawing only 1050W, achieving 30-40% energy savings over equivalent AC fans through FANOVA's BLDC motor technology.
2. Industrial-Grade Impeller: The 355mm 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 355mm 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.
