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 mm
- Max airflow2,500 m³/h
- Max static pressure380 Pa
- Noise70 dB(A)
LWFA-E-250-01 LWFA Series Direct Drive Centrifugal Blower Ø250 mm
Ø250 mm | AC | Max airflow 2,500 m³/h | Max static pressure 380 Pa | 70 dB(A)
- Factory direct
- OEM / ODM
- Samples in 1–3 days
- Production 15–30 days
- 18-month warranty
- CE · ETL · RoHS
Downloads for LWFA-E-250-01
PDFDatasheet · 959 KBSeries catalogue
PDFLWFA LWFA Series Direct Driven centrifugal blower · 1.4 MBCovers the whole series, not only this model.
Need a non-standard size or another format? Ask an engineer or search the download center.
LWFA-E-250-01 is a LONGWELL LWFA Series Direct Drive Centrifugal Blower from the Impeller Ø178–254 mm range, impeller Ø250 mm, maximum airflow 2,500 m³/h, maximum static pressure 380 Pa, noise 70 dB(A). The fixed-speed AC external-rotor motor is simple, robust and cost-effective for constant-duty applications.
Technical data
| Model | LWFA-E-250-01 |
|---|---|
| Motor type | AC |
| Max. airflow | 2,500 m³/h |
| Max. static pressure | 380 Pa |
| Noise | 70 dB(A) |
| Storage temperature | -40 ~ 80℃ |
| Humidity | 0 ~ 90 % RH |
| Altitude | < 1000m |
| Impeller diameter | Ø250 mm |
| Blade diameter | 250mm |
| Impeller material | Galvanized sheet ( Impeller ) |
| Balance grade | G6.3 |
| Vibration standard | JB/T 8689 |
| Service life | 30,000Hours(L10), At 40 °Croom, humidity 15%~65%RH |
Typical applications
- Commercial kitchen extraction
- Ventilation units and AHUs
- Process and fume extraction
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 | |
|---|---|---|---|---|---|---|---|
| LWFA-E-250-01 this model | 2,500 m³/h | 380 Pa | — | — | 70 dB(A) | — | |
| 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 |
| LWFA4E250-138NS-02 | 2,575 m³/h | 401.7 Pa | 1,330 rpm | 900 W | 72 dB(A) | 220 V | View |
Not sure which one? Send us the duty point (airflow / static pressure / noise limit) — use the selector or ask an engineer.
Related products
Adjacent sizesOne size up when airflow is short, one size down when it is too much
LWDD10-10-ECØ254 mm · 2,923 m³/h · 608 Pa · ECadjacent size
LWDD10-8-ECØ254 mm · 785 m³/h · 528 Pa · ECadjacent size
LWDD9-9-ECØ229 mm · 139 m³/h · 587 Pa · ECadjacent size
LWDD9-7-ECØ229 mm · 363 m³/h · 486 Pa · ECadjacent size
LWFA-E-225-01Ø225 mm · 2,300 m³/h · 325 Pa · ACadjacent size
LWFA-E-280-02Ø280 mm · 2,100 m³/h · 220 Pa · ACadjacent sizeAlternatives at a similar dutySimilar airflow, different construction or motor platform
LWCA-150700SN-06Ø150 mm · 2,500 m³/h · 85 Pa · ACsimilar duty
LWCD-150700MN-06Ø150 mm · 2,500 m³/h · 83 Pa · DCsimilar duty
LWDA-400 (16")U-MWN-03Ø400 mm · 2,500 m³/h · ACsimilar duty
LWDA-400 (16")U-MWN-01Ø400 mm · 2,500 m³/h · ACsimilar duty
LWDA-315(12.6'')S-PWN-05Ø315 mm · 2,500 m³/h · 450 Pa · ACsimilar dutyLW-G200T2,500 m³/hsimilar dutySee all Commercial Centrifugal Blowers · select by duty point