EN
FB3G175-48LH-7F
| Nominal Voltage | VDC | 48 |
| Current draw | A | 2.0 |
| Speed(RPM) | min-1 | 4250 |
| Power consumption | W | 96 |
| Max. Air Flow | CFM / m3 /H | 939/1596 |
| Max. Static Pressure | In.wg /Pa | 3.0/750 |
50pcs
The FB3G175-48LH-7F lotus variant delivers 1596 m³/h (939 CFM) at 750 Pa from a 48VDC supply—the telecom industry standard voltage. Drawing just 2.0A (half the current of the 24V version), it minimizes I²R losses in cable runs and battery banks while delivering the same 96W output at 4250 RPM. The BLDC72 lotus-optimized motor achieves class-leading power density in the 175mm form factor, making it ideal for telecom shelter ventilation, DC microgrid air handling, and high-flow 48V applications where cable sizing and voltage drop are critical design constraints. 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 FB3G175-48LH-7F shares the same mechanical platform and 96W output as the 24LH variant but operates at 48VDC—halving the current draw from 4.0A to 2.0A. This makes a significant difference in cable sizing, I²R losses, and connector selection in large installations. The 36~57 VDC input accommodates 48V battery banks and telecom rectifier outputs with wide voltage tolerance. The 7-blade glass-fiber reinforced PP impeller at 4250 RPM generates 1596 m³/h at 750 Pa. 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 | FB3G175-48LH-7F | |
| Model | BLDC72 | |
| Nominal Voltage | VDC | 48 |
| Voltage range | VDC | 36~57 |
| Current draw | A | 2.0 |
| Speed(RPM) | min-1 | 4250 |
| Power consumption | W | 96 |
| Sound Pressure Level | dB(A) | 73 |
| Max. Air Flow | CFM / m3 /H | 939/1596 |
| Max. Static Pressure | In.wg /Pa | 3.0/750 |
| Insulation class | ~ | Class 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. 48V Telecom Standard: Compatible with -48V DC telecom plants, PoE-based DC distribution, and server rack DC power. The 36~57 VDC input handles rectifier output variations. At just 2.0A, the FB3G175-48LH-7F minimizes cable sizing requirements and I²R losses—a critical advantage in large installations with long cable runs.
2. Half Current, Same Power: Delivers the same 96W / 1596 m³/h / 750 Pa as the 24V lotus variant at half the current—2.0A vs 4.0A. Smaller conductors, less voltage drop, longer battery runtime for the same kWh capacity. The lotus winding optimizes power density specifically for 48V operation.
3. 750 Pa High Static Pressure: Handles long ducts, high-MERV filters, and multi-outlet configurations. The 1596 m³/h at 750 Pa makes it suitable for telecom shelter pressurization, container cooling, and DC microgrid air handling where system resistance is significant.
4. Comprehensive Protection: Soft-start, current limitation, under/over voltage, thermal overload, locked-rotor, reverse polarity. FG tach (2 pulse/rev). Die-cast aluminum, IP44, ball bearings 50,000+ hr L10.
5. Certified & Flexible: CE, RoHS, ISO9001, ErP2026 with EN ISO 12100, EN 60204-1, EMC. OEM/ODM. 7-day samples, 14-21 day production. Modbus RTU RS485 optional.
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.
