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.
- ImpellerØ225 mm
- Max airflow3,502 m³/h
- Max static pressure371 Pa
- Voltage230 V
- Speed1,250 rpm
- Input power750 W
- Noise77 dB(A)
LWFE3G225-138DS-03 EC Dual Inlet Forward Centrifugal Blower Ø225 mm
Ø225 mm | EC | Max airflow 3,502 m³/h | Max static pressure 371 Pa | 77 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.
Downloads for LWFE3G225-138DS-03
PDFDatasheetNeed a non-standard size or another format? Ask an engineer or search the download center.
LWFE3G225-138DS-03 is a LONGWELL EC Dual Inlet Forward Centrifugal Blower from the Dual Inlet Forward Curved Blowers range, impeller Ø225 mm, rated 230 V EC, maximum airflow 3,502 m³/h, maximum static pressure 371 Pa, noise 77 dB(A), input power 750 W. The EC motor integrates the drive electronics: stepless speed control by 0–10 V or PWM signal, speed feedback and high efficiency at part load.
Technical data
| Model | LWFE3G225-138DS-03 |
|---|---|
| Series | LWFE3G225 |
| Motor type | EC |
| Phase | 1-phase |
| Rated voltage | 230 V |
| Frequency | 50 Hz |
| Current | 3.5 A |
| Input power | 750 W |
| Speed | 1,250 rpm |
| Max. airflow | 3,502 m³/h |
| Max. airflow (CFM) | 2,061 CFM |
| Max. static pressure | 371 Pa |
| Noise | 77 dB(A) |
| Ambient temperature | -30 ~ 60 °C |
| Storage temperature | -25 ~ 70℃ |
| Humidity | 0 ~ 85% RH |
| Altitude | < 1000m |
| Impeller diameter | Ø225 mm |
| Rotor diameter | 138 |
| Impeller material | Galvanised sheet steel (Impeller) |
| Protection class | IP44 |
| Insulation class | B |
| Bearing | Maintenance-free deep groove ball bearings |
| Duty | S1 |
| Balance grade | G6.3 |
| Vibration standard | JB/T 8689 |
| Service life | 40,000Hours(L10). At 40℃room, humidity 15%~65%RH |
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 LWFE3G225: 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 (Ø225 mm · EC)
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 | |
|---|---|---|---|---|---|---|---|
| LWFE3G225-138DS-03 this model | 3,502 m³/h | 371 Pa | 1,250 rpm | 750 W | 77 dB(A) | 230 V | |
| LWFE3G225-072PS-01 | 1,009.4 m³/h | 618 Pa | 2,300 rpm | 85 W | 65 dB(A) | 230 V | View |
| LWBE3G225-072PS-11 | 1,112 m³/h | 433 Pa | 2,500 rpm | 80 W | 69 dB(A) | 230 V | View |
| LWBE3G225-072NS-10 | 1,112 m³/h | 433 Pa | 2,500 rpm | 80 W | 69 dB(A) | 230 V | View |
| LWFE3G225-072PS-02 | 1,184.5 m³/h | 669.5 Pa | 2,600 rpm | 115 W | 67 dB(A) | 230 V | View |
| LWFE3G225-072PS-03 | 1,313.25 m³/h | 1,030 Pa | 3,100 rpm | 170 W | 70 dB(A) | 230 V | View |
| LWFE3G225-092PS-04 | 1,359.6 m³/h | 906.4 Pa | 3,600 rpm | 230 W | 71 dB(A) | 230 V | View |
| LWBE3G225-092NS-10 | 1,359.6 m³/h | 906.4 Pa | 3,600 rpm | 230 W | 71 dB(A) | 230 V | View |
| LWBE3G225-092NU-17 | 1,359.6 m³/h | 906.4 Pa | 3,600 rpm | 230 W | 71 dB(A) | 115 V | View |
| LWBE3G225-092PS-12 | 1,528 m³/h | 683 Pa | 3,060 rpm | 170 W | 71.1 dB(A) | 230 V | View |
| LWBE3G225-092NS-11 | 1,528 m³/h | 683 Pa | 3,060 rpm | 170 W | 71 dB(A) | 230 V | View |
| LWBE3G225-092PS-13 | 1,545 m³/h | 731 Pa | 3,000 rpm | 160 W | 71 dB(A) | 230 V | View |
| LWBE3G225-092NS-12 | 1,545 m³/h | 731 Pa | 3,000 rpm | 160 W | 71 dB(A) | 230 V | View |
| LWBE3G225-092PS-07 | 1,630 m³/h | 839 Pa | 3,500 rpm | 315 W | 71 dB(A) | 230 V | View |
| LWBE3G225-092NS-13 | 1,630 m³/h | 839 Pa | 3,500 rpm | 315 W | 71 dB(A) | 230 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
Other models in the LWFE3G225 seriesSame impeller, different speed grade or wiring
LWFE3G225-138DS-01Ø225 mm · 3,605 m³/h · 577 Pa · ECsame series
LWFE3G225-102DS-02Ø225 mm · 3,039 m³/h · 484 Pa · ECsame series
LWFE3G225-102SS-01Ø225 mm · 1,648 m³/h · 711 Pa · ECsame series
LWFE3G225-072PS-01Ø225 mm · 1,009.4 m³/h · 618 Pa · ECsame series
LWFE3G225-072PS-02Ø225 mm · 1,184.5 m³/h · 669.5 Pa · ECsame series
LWFE3G225-072PS-03Ø225 mm · 1,313.25 m³/h · 1,030 Pa · ECsame seriesAdjacent sizesOne size up when airflow is short, one size down when it is too much
LWBA2E220-092NS-02Ø220 mm · 945 m³/h · 515 Pa · ACadjacent size
LWBA2E220-092NS-05Ø220 mm · 999 m³/h · 515 Pa · ACadjacent size
LWBA2E220-092NS-04Ø220 mm · 937 m³/h · 484 Pa · ACadjacent size
LWBA4E220-092NS-03Ø220 mm · 767 m³/h · 399 Pa · ACadjacent size
LWFE3G220-072PS-01Ø220 mm · 937.3 m³/h · 721 Pa · ECadjacent size
LWFE3G220-072PS-02Ø220 mm · 1,019.7 m³/h · 597.4 Pa · ECadjacent sizeAlternatives at a similar dutySimilar airflow, different construction or motor platform
LWAA2E300S-5MBW-08Ø300 mm · 3,502 m³/h · ACsimilar duty
LWAA6D450S-5MEB-08Ø450 mm · 3,502 m³/h · ACsimilar duty
LWAA2E300S-5MEW-08Ø300 mm · 3,502 m³/h · ACsimilar duty
LWFA4D280-188NT-01Ø280 mm · 3,502 m³/h · 463.5 Pa · ACsimilar duty
LWDE-300 (12")S-MWN-04Ø300 mm · 3,500 m³/h · ECsimilar duty
LWDE-300 (12")S-MWN-02Ø300 mm · 3,500 m³/h · ECsimilar dutySee all Centrifugal Fans · select by duty point