FB3G190-24PL-91 Backward Curved Centrifugal Fan, 24VDC, 190mm, 624.4 m3/h

When your application demands dependable airflow in remote or off-grid locations, the FANOVA FB3G190-24PL-91 back-curved centrifugal fan delivers uncompromising performance on a safe 24 VDC platform. Engineered with a glass-fiber-reinforced polypropylene impeller, this model combines lightweight durability with excellent chemical resistance, making it ideal for environments where corrosion and weight are concerns. The FB3G190-24PL-91 operates at a rated 24 VDC (16-28 V range), drawing just 3.6 A and consuming only 86.4 W—a standout for energy-sensitive designs powered by batteries or solar arrays. Despite its modest power footprint, it generates a maximum airflow of 367.5 CFM (624.4 m³/h) and a static pressure of 2.12 in.wg (530 Pa) at 3300 RPM, proving that low power does not mean low output. The integrated brushless DC motor (BLDCDC92) ensures high efficiency, long service life, and quiet operation at 71 dB(A), while the die-cast aluminum housing adds structural rigidity and effective heat dissipation. Speed control is flexible via PWM or 0-10V signals, allowing precise airflow modulation to match system demands. Protection features include reverse polarity and locked-rotor safeguards, with Class B insulation and IP42-rated construction for reliable operation in demanding conditions. Backed by dual ball bearings rated for 50,000 hours at 40°C, this fan is perfect for telecom enclosures, medical devices, battery cooling, and renewable energy systems. Count on FANOVA's ISO9001-certified manufacturing and CE/UL compliance to deliver a component you can integrate with confidence.

The FANOVA FB3G190-24PL-91 represents a strategic choice for engineers seeking a 24 VDC centrifugal fan that balances energy economy with robust air-moving capability. At the heart of the unit is a 190 mm diameter impeller constructed from polypropylene reinforced with glass fibers, yielding a blade structure that resists deformation under centrifugal stress while remaining up to 40% lighter than metal equivalents. This material selection not only reduces rotational inertia for faster response and lower starting current, but also provides inherent resistance to moisture, mild acids, and alkaline vapors, extending service life in harsh ventilation streams. The impeller features a backward-curved blade profile with a precisely calculated blade count that optimizes the pressure-to-flow curve, delivering a steep performance characteristic suitable for systems with variable static resistance. Around this impeller, a die-cast aluminum housing provides a rigid volute that minimizes turbulence losses and ensures accurate blade tip clearance, contributing to the fan's peak static pressure of 530 Pa and free-air flow of 624.4 m³/h. Powering the assembly is the BLDCDC92 brushless DC motor, a sensorless design that eliminates brush wear and commutation arcing, featuring a high-energy-density rotor (92 mm diameter) with neodymium magnets. The motor's electronic commutation is managed by an integrated control board that accepts a 24 VDC input (16-28 V operational window) and draws 3.6 A maximum, translating to 86.4 W at full speed. Users can modulate airflow through either a PWM input (frequency range 1 kHz to 30 kHz) or an analog 0-10 V control signal, with a soft-start function that limits inrush current to protect power supplies. The fan also incorporates a tachometer output (open-collector, 3 pulses per revolution) for real-time speed monitoring, enabling closed-loop control in precision HVAC or thermal management systems. Electrically, the unit is protected against reverse polarity, over-current, and locked-rotor conditions, while the motor windings are insulated to Class B (130°C), ensuring thermal resilience up to the maximum operating temperature of 70°C. For mechanical reliability, dual ball bearings (chrome steel, lubricated for life) support the rotor, rated for 50,000 hours of operation at 40°C ambient, with a L10 life of 30,000 hours at 60°C—sufficient for continuous-duty applications. The cable assembly consists of 20 AWG leads with a length of 500 mm, stripped and tinned for secure connection to terminal blocks or connectors, and the housing is sealed to IP42, guarding against vertical water drips and solid particles larger than 1 mm. Acoustic output is measured at 71 dB(A) at 1 meter, a reasonable level for industrial equipment, and the fan's balanced rotor (ISO 1940 G2.5) ensures vibration-free operation. The FB3G190-24PL-91 is manufactured under FANOVA's ISO9001:2015 certified processes, and each unit is 100% tested for airflow, current, and noise before shipment. It carries CE (LVD and EMC directives) and RoHS compliance, with UL certification available upon request for North American deployments. Whether integrated into battery energy storage systems, solar-powered ventilation, marine electronics, or medical diagnostic equipment, this fan offers a compelling blend of low power draw, material resilience, and precise control, backed by FANOVA's commitment to OEM/ODM customization and two-year warranty.

DC Backward Curved Centrifugal Fan
Type	FB3G190-24PL-91
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 FB3G190-24PL-91 delivers 624.4 m3/h at 530 Pa while drawing only 86.4W, achieving 30-40% energy savings over equivalent AC fans through FANOVA's BLDC motor technology.

2. Industrial-Grade Impeller: The 190mm 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 190mm 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.