EN
FB3G175-24LH-7F
| Tension nominale | VDC | 24 |
| Consommation de courant | A | 4.0 |
| Vitesse (tr/min) | min -1 | 4250 |
| Consommation d'énergie | L | 96 |
| Débit d'air max. | CFM / m 3 /H | 939/1596 |
| Pression statique max | Po. c. d'eau /Pa | 3.0/750 |
50pcs
The FB3G175-24LH-7F lotus variant delivers an exceptional 1596 m³/h (939 CFM) at 750 Pa from a 24VDC supply—the highest airflow in the 175mm class. Its BLDC72 lotus-optimized motor produces 96W at 4250 RPM, designed specifically for high-flow 24VDC applications including telecom shelter ventilation, container cooling, solar-powered air handling, and DC microgrid HVAC. The lotus winding design maximizes power density from 24VDC supplies, drawing 4.0A to deliver 96W—equivalent performance to 230VAC fans in a compact DC form factor. 0-10VDC/PWM speed control with FG tach (2 pulse/rev). CE, RoHS, ISO9001, ErP2026 certified with 50,000-hour L10 bearing life.
The lotus-series FB3G175-24LH-7F features an optimized winding configuration in its BLDC72 external rotor motor that extracts 96W from 24VDC supplies at 4.0A—the highest power density in the 175mm DC fan lineup. The 7-blade glass-fiber reinforced PP impeller spins at 4250 RPM to generate 1596 m³/h at 750 Pa, making it suitable for high-resistance ducted systems, long distribution runs, and multi-outlet configurations. The wide 16~28 VDC input accommodates lead-acid battery charge cycles (21-28V) and regulated 24V supplies. Die-cast aluminum housing with IP44. Full protection: soft-start, current limitation, under/over voltage, thermal overload, locked-rotor, reverse polarity. Ball bearings 50,000+ hr L10. CE, RoHS, ISO9001, ErP2026 and EN ISO 12100, EN 60204-1, EMC compliant.
| DC Backward Centrifugal Fan |  |
|
| Type | FB3G175-24LH-7F | |
| Model | BLDC72 | |
| Tension nominale | VDC | 24 |
| Voltage range | VDC | 16~28 |
| Consommation de courant | A | 4.0 |
| Vitesse (tr/min) | min -1 | 4250 |
| Consommation d'énergie | L | 96 |
| Sound Pressure Level | dB(A) | 73 |
| Débit d'air max. | CFM / m 3 /H | 939/1596 |
| Pression statique max | Po. c. d'eau /Pa | 3.0/750 |
| Insulation class | ~ | Classe B |
| Degree of protection | ~ | IP44 |
| Control Input | ~ | 0~10VDC / PWM |
| Signal Output | ~ | FG (Tach output ) |
Remarks:
I. Standard cable length. Customizable.
II. 0-10V/PWM control. Modbus RTU RS485 optional.
Test condition:
I. Specified environment and installation mode.
II. Input Voltage---Operating voltage.
III. Temperature---Room 25°C.
IV. 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. 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
V. The fan needs to be operated and used under the guidance of professional personnel to prevent children from coming into touch this product
VI. 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
VII. As a part of the fan, it is not recommended to use the motor alone when there is no impeller or loading
1. Highest 175mm Airflow: The lotus-optimized FB3G175-24LH-7F delivers 1596 m³/h at 750 Pa—class-leading performance for battery-backed 24VDC systems. The BLDC72 motor extracts 96W at 4.0A, maximizing power density from standard 24V DC supplies for telecom shelters, container cooling, and DC microgrid ventilation.
2. Lotus Winding Technology: The purpose-designed lotus winding configuration achieves higher power density than standard BLDC windings—96W output from a 175mm frame at 4250 RPM. This enables DC-powered systems to match the airflow performance typically associated with AC-powered fans of similar size.
3. 750 Pa High Static Pressure: Engineered for systems with significant resistance: long duct runs, high-MERV filtration, and multi-outlet air distribution networks. The high-pressure capability eliminates the need for booster fans in demanding DC-powered ventilation systems.
4. 24VDC with Wide Input: 16~28 VDC range accommodates lead-acid charging voltages and regulated supplies. Full protection suite: soft-start, current limitation, under/over voltage, thermal overload, locked-rotor, reverse polarity. FG tach (2 pulse/rev).
5. Certified & Durable: CE, RoHS, ISO9001, ErP2026 with EN ISO 12100, EN 60204-1, EMC. Die-cast aluminum, IP44, ball bearings 50,000+ hr L10. OEM/ODM. 7-day samples, 14-21 day production.
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 7 days for standard models
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.
