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.
- ImpellerØ400 mm
- Max airflow5,476 m³/h
- Max static pressure600 Pa
- Voltage230 V
- Speed1,520 rpm
- Input power500 W
- Noise68 dB(A)
LWBE3G400-102NS-15 EC Backward Curved Centrifugal Fan Ø400 mm
Ø400 mm | EC | Max airflow 5,476 m³/h | Max static pressure 600 Pa | 68 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.
Need a non-standard size or another format? Ask an engineer or search the download center.
LWBE3G400-102NS-15 is a LONGWELL EC Backward Curved Centrifugal Fan from the Backward Curved Centrifugal Fans range, impeller Ø400 mm, rated 230 V EC, maximum airflow 5,476 m³/h, maximum static pressure 600 Pa, noise 68 dB(A), input power 500 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 | LWBE3G400-102NS-15 |
|---|---|
| Series | LWBE3G400 |
| Motor type | EC |
| Phase | 1-phase |
| Rated voltage | 230 V |
| Frequency | 50 Hz |
| Current | 3.6 A |
| Input power | 500 W |
| Speed | 1,520 rpm |
| Max. airflow | 5,476 m³/h |
| Max. airflow (CFM) | 3,303 CFM |
| Max. static pressure | 600 Pa |
| Noise | 68 dB(A) |
| Ambient temperature | -25 ~ 60 °C |
| Storage temperature | -25 ~ 70℃ |
| Humidity | 0 ~ 85% RH |
| Altitude | < 1000m |
| Impeller diameter | Ø400 mm |
| Rotor diameter | 102 |
| Impeller material | Aluminum Alloy (Impeller) |
| Protection class | IP54 |
| Insulation class | F |
| 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 |
| Speed control | Control input 0~10VDC |
| Control signal | Control signal VSP voltage range 1.5±0.1VDC~9.5±0.2VDC(During normal operation, when the VSP voltage is below 0.9±0.1VDC, the motor switches from operating mode to standby mode) |
| Speed feedback | Tach output: 5 Pulse/R; FG internal open circuit output, external pull-up resistor 10K, pull-up voltage V+ |
| Auxiliary output | Output 12±0.3VDC, Max Current: 10mA |
| Protection functions | Current limiting protection, Over-temperature protection, Over-current protectionLocked-rotor protection, Input power supply lacks phase protection |
| Soft start | Delay time <35 seconds to full speed |
| 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 LWBE3G400: 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 (Ø400 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 | |
|---|---|---|---|---|---|---|---|
| LWBE3G400-102NS-15 this model | 5,476 m³/h | 600 Pa | 1,520 rpm | 500 W | 68 dB(A) | 230 V | |
| LWBE3G400-102PS-11 | 3,554 m³/h | 546 Pa | 1,460 rpm | 300 W | 76 dB(A) | 230 V | View |
| LWBE3G400-102NS-16 | 3,554 m³/h | 546 Pa | 1,460 rpm | 300 W | 76 dB(A) | 230 V | View |
| LWBE3G400-102PS-01 | 3,914 m³/h | 556 Pa | 1,430 rpm | 330 W | 70 dB(A) | 230 V | View |
| LWDE-400 (16")U-MWN-01 | 4,032 m³/h | see curve | 2,800 rpm | 1,200 W | 81 dB(A) | 110-120 V | View |
| LWDE-400 (16")U-MWN-03 | 4,032 m³/h | see curve | 2,800 rpm | 1,200 W | 70 dB(A) | 110-120 V | View |
| LWBE3G400-102PS-09 | 4,463 m³/h | 420 Pa | 1,250 rpm | 297 W | — | 230 V | View |
| LWBE3G400-102PS-10 | 5,615 m³/h | 622 Pa | 1,520 rpm | 500 W | — | 230 V | View |
| LWFE3G400-102PS-02 | 6,489 m³/h | 978.5 Pa | 1,800 rpm | 700 W | 85 dB(A) | 230 V | View |
| LWDE-400 (16")S-MWN-02 | 6,850 m³/h | see curve | 2,800 rpm | 1,200 W | 81 dB(A) | 220-240 V | View |
| LWDE-400 (16")S-MWN-04 | 6,850 m³/h | see curve | 2,800 rpm | 1,200 W | 70 dB(A) | 220-240 V | View |
| LWBE3G400-138PT-04 | 7,459 m³/h | 840 Pa | 2,060 rpm | 1,100 W | 77 dB(A) | 400 V | View |
| LWBE3G400-138NT-12 | 7,459 m³/h | 840 Pa | 1,100 rpm | 1,480 W | 71 dB(A) | 400 V | View |
| LWBE3G400-188PT-07 | 9,682 m³/h | 1,627 Pa | 2,650 rpm | 2,060 W | 84 dB(A) | 400 V | View |
| LWBE3G400-188NT-17 | 9,682 m³/h | 1,627 Pa | 2,650 rpm | 2,060 W | 84 dB(A) | 400 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 LWBE3G400 seriesSame impeller, different speed grade or wiring
LWBE3G400-102NS-11Ø400 mm · 6,489 m³/h · 978.5 Pa · ECsame series
LWBE3G400-102NS-02Ø400 mm · 3,914 m³/h · 556.2 Pa · ECsame series
LWBE3G400-102NS-14Ø400 mm · 4,463 m³/h · 420 Pa · ECsame series
LWBE3G400-102NS-16Ø400 mm · 3,554 m³/h · 546 Pa · ECsame series
LWBE3G400-138NT-12Ø400 mm · 7,459 m³/h · 840 Pa · ECsame series
LWBE3G400-188NT-17Ø400 mm · 9,682 m³/h · 1,627 Pa · ECsame seriesAdjacent sizesOne size up when airflow is short, one size down when it is too much
LWBD3G355-102NH-04Ø355 mm · 2,421 m³/h · 499 Pa · DCadjacent size
LWBE3G355-092PS-15Ø355 mm · 2,472 m³/h · 350 Pa · ECadjacent size
LWBE3G355-092NS-19Ø355 mm · 2,472 m³/h · 350.2 Pa · ECadjacent size
LWBE3G355-102NS-20Ø355 mm · 3,554 m³/h · 618 Pa · ECadjacent size
LWBE3G355-102PS-16Ø355 mm · 3,554 m³/h · 618 Pa · ECadjacent size
LWBA4E355-102NS-01Ø355 mm · 2,524 m³/h · 381 Pa · ACadjacent sizeAlternatives at a similar dutySimilar airflow, different construction or motor platform
LWAA4D420S-5MEB-03Ø420 mm · 5,459 m³/h · ACsimilar duty
LWAA4E420S-5MEB-01Ø420 mm · 5,459 m³/h · ACsimilar duty
LWAA4E450S-5MKB-18Ø450 mm · 5,459 m³/h · ACsimilar duty
LWAA4D450S-5MKB-20Ø450 mm · 5,459 m³/h · ACsimilar duty
LWA-350(14")U(S)M-04Ø350 mm · 5,500 m³/h · 250 Pa · ACsimilar duty
LWMFAF400-02Ø400 mm · 5,400 m³/h · 1,700 Pa · ACsimilar dutySee all Backward Curved Centrifugal Fans · select by duty point