EN
FB3G175-1ALH-7A
| Nominal Voltage | VAC | 115 |
| Current draw | A | 0.6 |
| Speed(RPM) | min-1 | 2850 |
| Power consumption | W | 35 |
| Max. Air Flow | CFM / m3 /H | 320/544 |
| Max. Static Pressure | In.wg /Pa | 1.61/402 |
50pcs
At just 59 dB(A), the FB3G175-1ALH-7A is quieter than a normal conversation—engineered for libraries, hospital wards, hotel HVAC, and premium office ventilation where acoustic comfort is non-negotiable. Its BLEC72 EC motor drives a 175mm backward curved impeller at 2850 RPM, moving 544 m³/h (320 CFM) at 402 Pa while consuming only 35W. The larger 175mm swept area moves more air at lower RPM than smaller fans, reducing both noise and energy consumption. Operating on standard 115VAC 50/60, it drops directly into North American and Japanese installations without transformers. 0-10VDC/PWM speed control with FG tach (3 pulse/rev). CE, RoHS, ISO9001, ErP2026 certified with 50,000-hour L10 bearing life.
The FB3G175-1ALH-7A pairs a BLEC72 external rotor EC motor with a 7-blade 175mm glass-fiber reinforced PP impeller that achieves high airflow at remarkably low rotational speed—the 2850 RPM sweet spot where aerodynamic efficiency meets acoustic performance. Drawing just 0.6A at 115VAC, it produces 35W to deliver 544 m³/h at 402 Pa. The 50/60 dual-frequency capability ensures consistent performance from 60Hz North American grids to 50Hz Japanese facilities. The 92~138 VAC input handles voltage fluctuations. The die-cast aluminum housing provides IP44 protection and effective heat dissipation. Ball bearings support any-angle mounting with 50,000+ hour L10 service life at 40°C. Protection suite: soft-start, current limitation, under/over voltage, thermal overload, locked-rotor, reverse polarity. CE, RoHS, ISO9001, ErP2026 and EN ISO 12100, EN 60204-1, EMC compliant.
| EC Backward Centrifugal Fan |  |
|
| Type | FB3G175-1ALH-7A | |
| Model | BLEC72 | |
| Phase | ~ | 1~ |
| Nominal Voltage | VAC | 115 |
| Frequency | Hz | 50/60 |
| Voltage range | VAC | 92~138 |
| Current draw | A | 0.6 |
| Speed(RPM) | min-1 | 2850 |
| Power consumption | W | 35 |
| Sound Pressure Level | dB(A) | 59 |
| Max. Air Flow | CFM / m3 /H | 320/544 |
| Max. Static Pressure | In.wg /Pa | 1.61/402 |
| 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. Whisper-Quiet 59dB: Quieter than normal conversation, the FB3G175-1ALH-7A is engineered for noise-critical environments—hospital wards, libraries, premium offices, hotel HVAC. The large 175mm impeller at low 2850 RPM achieves high airflow without the high-frequency whine of smaller, faster-spinning fans.
2. Larger Frame, Higher Flow: The 175mm impeller moves 544 m³/h at just 2850 RPM—more airflow than 133mm competitors while running slower and quieter. The 402 Pa static pressure handles ducted systems with moderate resistance.
3. US/Japan Grid Ready: 115VAC 50/60 with 92~138 VAC tolerance. Direct drop-in for North American and Japanese equipment without transformer or converter.
4. Ultra-Efficient 35W: EC motor technology delivers 544 m³/h for just 35W—replace legacy 115VAC PSC fans consuming 80-120W. 0.6A current draw leaves ample headroom on standard 15A circuits.
5. Certified & Reliable: CE, RoHS, ISO9001, ErP2026. Die-cast aluminum, IP44, ball bearings 50,000+ hr L10. OEM/ODM with custom voltage, connectors, cables. 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.
