Digitised from the catalogue curve at standard air (20 °C, 101.3 kPa, 1.2 kg/m³); one curve per voltage / speed grade. The system resistance curve depends on the actual ductwork — confirm the operating point on site. Need an engineer to verify the duty point? Contact us or add the model to your RFQ and note the duty point.
- ImpellerØ250 mm9.8 in
- Max airflow1,470 m³/h865 CFM
- Max static pressure714 Pa2.87 in. wg
- Voltage230 V
- Speed2,700 rpm
- Input power151 W
- Noise72.7 dB(A)
LWBA2E250-092NS-07 AC Backward Curved Centrifugal Fan Ø250 mm
Ø250 mm | AC | Max airflow 1,470 m³/h | Max static pressure 714 Pa | 72.7 dB(A)
- Factory direct
- OEM / ODM
- Samples in 1–3 days
- Production 15–30 days
- 18-month warranty
- CE · ETL · RoHS
Engineering files (on request)
CAD files exist for this model and can be released for assembly checks in SolidWorks / CATIA / Creo / Inventor.
CAD models contain the blade geometry and are not downloadable. Tell us the project; an engineer sends the file after a short check, normally within 1 business day.
LWBA2E250-092NS-07 — construction, airflow path and running condition.
LWBA2E250-092NS-07 AC Backward Curved Centrifugal Fan | Product Overview · open in video library
Downloads for LWBA2E250-092NS-07
PDFDatasheetNeed a non-standard size or another format? Ask an engineer or search the download center.
LWBA2E250-092NS-07 is a LONGWELL AC Backward Curved Centrifugal Fan from the Backward Curved Centrifugal Fans range, impeller Ø250 mm, rated 230 V AC, maximum airflow 1,470 m³/h, maximum static pressure 714 Pa, noise 72.7 dB(A), input power 151 W. The fixed-speed AC external-rotor motor is simple, robust and cost-effective for constant-duty applications.
Technical data
| Model | LWBA2E250-092NS-07 |
|---|---|
| Series | LWBA2E250 |
| Motor type | AC |
| Phase | 1-phase |
| Rated voltage | 230 V |
| Frequency | 50 Hz |
| Current | 0.66 A |
| Input power | 151 W |
| Speed | 2,700 rpm |
| Max. airflow | 1,470 m³/h |
| Max. static pressure | 714 Pa |
| Noise | 72.7 dB(A) |
| Ambient temperature | -40 ~ 65 °C |
| Storage temperature | -25 ~ 70℃ |
| Humidity | 0 ~ 85 % RH |
| Altitude | < 1000m |
| Impeller diameter | Ø250 mm |
| Rotor diameter | 92 |
| Impeller material | Plastic PA66 ( Impeller ) |
| Protection class | IP44 |
| Insulation class | F |
| Bearing | Maintenance-free ball bearings |
| Duty | S1 |
| Balance grade | G6.3 |
| Vibration standard | JB/T8689 |
| Service life | 40,000Hours(L10), At 40 °Croom, humidity 15%~65%RH |
| Rotation | Clockwise,seen on rotor |
Typical applications
- Air handling units (AHU) and rooftop units (RTU)
- Data-center CRAH / CRAC units and fan walls
- Dust extraction and process ventilation
- Fan filter units and air purifiers
Series LWBA2E250: models in the same series share the impeller and motor platform and differ in speed grade, voltage or lead-out / terminal-box configuration — compare them in the table below or ask for the best fit at your duty point.
Nameplate values: maximum airflow is measured at zero static pressure and maximum static pressure at zero airflow; the two never occur together. Confirm the operating point on the performance curve. Final selection is subject to the duty point (airflow / static pressure / voltage / control mode) and project verification.
Alternatives with the same impeller (Ø250 mm · AC)
Same impeller, different speed grade, power or wiring. Step up for more airflow, step down for lower noise.
| Model | Max airflow | Max static pressure | Speed | Power | Noise | Voltage | |
|---|---|---|---|---|---|---|---|
| LWBA2E250-092NS-07 this model | 1,470 m³/h | 714 Pa | 2,700 rpm | 151 W | 72.7 dB(A) | 230 V | |
| LWA-250(10")U(S)M-01 | 28 m³/h | see curve | 1,350 rpm | 80 W | — | 110-120 V | View |
| LWA-250(10")U(S)M-02 | 48 m³/h | see curve | 2,800 rpm | 230 W | — | 110-120 V | View |
| LWDA-250S-MBN-10 | 1,034 m³/h | 515 Pa | 2,615 rpm | 165 W | 71 dB(A) | 230 V | View |
| LWDA-250 (10")U-MWN-01 | 1,219 m³/h | see curve | 3,000 rpm | 228 W | 69 dB(A) | 110-120 V | View |
| LWDA-250 (10")U-MWN-03 | 1,219 m³/h | see curve | 3,000 rpm | 228 W | 62 dB(A) | 110-120 V | View |
| LWDA-250(8'')S-PWN-05 | 1,600 m³/h | 420 Pa | 2,500 rpm | 175 W | 50 dB(A) | 230 V | View |
| LWFA6E250-102NS-04 | 1,751 m³/h | 164.8 Pa | 900 rpm | 320 W | 62 dB(A) | 220 V | View |
| LWFA6D250-102NT-03 | 1,751 m³/h | 164.8 Pa | 910 rpm | 320 W | 62 dB(A) | 380 V | View |
| LWDA-250 (10")S-MWN-02 | 1,900 m³/h | see curve | 2,750 rpm | 162 W | 68 dB(A) | 220-240 V | View |
| LWDA-250 (10")S-MWN-04 | 1,900 m³/h | see curve | 2,750 rpm | 162 W | 60 dB(A) | 220-240 V | View |
| LWFA-E-250-02 | 2,100 m³/h | 215 Pa | — | — | 64 dB(A) | — | View |
| LWA-250(10")U(S)M-03 | 2,100 m³/h | 215 Pa | 2,800 rpm | 250 W | — | 110-120 V | View |
| LWDA-250(10")S-MWN-06 | 2,100 m³/h | 215 Pa | 2,800 rpm | 100 W | 65 dB(A) | 220 V | View |
| LWFA-E-250-01 | 2,500 m³/h | 380 Pa | — | — | 70 dB(A) | — | View |
Not sure which one? Send us the duty point (airflow / static pressure / noise limit) — use the selector or ask an engineer.
Related products
Other models in the LWBA2E250 seriesSame impeller, different speed grade or wiring
LWBA2E250-092NS-05Ø250 mm · 1,751 m³/h · 721 Pa · ACsame series
LWBA2E250-092NS-08Ø250 mm · 1,288 m³/h · 597 Pa · ACsame series
LWBA2E250-092NS-09Ø250 mm · 1,185 m³/h · 773 Pa · ACsame series
LWBA2E250-092NS-12Ø250 mm · 1,185 m³/h · 567 Pa · ACsame series
LWBA2E250-092NS-13Ø250 mm · 1,421 m³/h · 618 Pa · ACsame series
LWBA2E250-092NS-14Ø250 mm · 1,499 m³/h · 773 Pa · ACsame seriesAdjacent sizesOne size up when airflow is short, one size down when it is too much
LWBE3G270-092NS-02Ø270 mm · 1,545 m³/h · 332 Pa · ECadjacent size
LWBE3G270-092NU-01Ø270 mm · 1,545 m³/h · 332 Pa · ECadjacent size
LWBA2E225-092NS-01Ø225 mm · 618 m³/h · 165 Pa · ACadjacent size
LWFA4D225-138ST-02Ø225 mm · 1,442 m³/h · 288.4 Pa · ACadjacent size
LWBA4E225-092NS-02Ø225 mm · 690 m³/h · 216 Pa · ACadjacent size
LWFA4D225-138NT-01Ø225 mm · 1,648 m³/h · 288.4 Pa · ACadjacent sizeAlternatives at a similar dutySimilar airflow, different construction or motor platform
LWBE3G250-072NS-09Ø250 mm · 1,478.05 m³/h · 927 Pa · ECsimilar duty
LWBE3G250-072NU-34Ø250 mm · 1,478.05 m³/h · 927 Pa · ECsimilar duty
LWFE3G250-072PS-04Ø250 mm · 1,478.05 m³/h · 927 Pa · ECsimilar duty
LWBD3G250-072NZ-07Ø250 mm · 1,483 m³/h · 597 Pa · DCsimilar duty
LWDE3G200-IS-01Ø198 mm · 1,453 m³/h · ECsimilar duty
LWDE3G200-IS-03Ø198 mm · 1,453 m³/h · 721 Pa · ECsimilar dutySee all Backward Curved Centrifugal Fans · select by duty point