Representative image of the series — dimensions and configuration of this model are given in the drawing and data table below.
- ImpellerØ400 mm15.7 in
- Max airflow5,476 m³/h3,303 CFM
- Max static pressure600 Pa2.41 in. wg
- 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)
- Direct from LONGWELL
- OEM / ODM
- Samples in 1–3 days
- Production 15–30 days
- 12-month warranty
- CE · ETL · RoHS
CAD models (STEP / DWG) are released on request — see “Engineering files” below. Another format or a non-standard variant? Ask an engineer · download center
Cross-reference: same impeller size class as ebm-papst K3G400, ebm-papst R3G400, ebm-papst RadiPac 400, Ziehl-Abegg RH40C — side-by-side comparison on longwellfans.com. Mounting is confirmed against the LONGWELL drawing before ordering.
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 publicly downloadable. Tell us the project; an engineer sends the file after a short check, normally within 1 business day.
Performance curve (P-Q) LWBE3G400-102NS-15
Digitised from the catalogue curve at standard air (20 °C, 101.3 kPa, 1.2 kg/m³); one curve per voltage / speed grade (1 here, rated 230 V). Data version: catalogue curve re-digitised 2026-09-20 (axis-calibrated, cross-checked). 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.
Video LWBE3G400-102NS-15
LONGWELL 400mm EC Backward Curved Centrifugal Fan for AHU & HVAC Systems | LWBE3G400 · open in video library
Longwell Centrifugal Fans: Efficient and Quiet, Leading New Industry Trends | LWBE3G400-102NS-22 · open in video library
Drawing, Curve & Wiring LWBE3G400-102NS-15
Files for LWBE3G400-102NS-15: datasheet, catalogue and drawing PDFs are listed above ↑ · CAD (STEP / DWG) on request — ask an engineer.
Technical description LWBE3G400-102NS-15
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 mm |
| 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.
Product-line certificates
Scans of original documents held by Ningbo Longwell Electric Technology Co., Ltd.: the company ISO management-system certificate and the certificates whose model list covers this model. Click a scan to open the original.
ISO 9001 / 14001 / 45001Management systems of Ningbo Longwell Electric Technology Co., Ltd. (company certificate).
PDFISO 9001 / 14001 / 45001 management system certificateCE-LVDVoluntary certificates of conformity issued by KTS; the covered models are listed on each certificate.
PDFCE-LVD certificate of conformity KB2206066L01 · LWBE3GETLIntertek Authorization to Mark, control no. 5022563; the covered model ranges are stated on the document.
PDFETL Authorization to Mark · report 220400508HAN-001 · LWBE3G / LWDE3G / LWFE3GRoHSVoluntary certificate of conformity issued by KTS; the covered models are listed on the certificate.
PDFRoHS certificate of conformity KB2206068R01 · LWBE3GNeed a Declaration of Conformity for this model and your destination market? Ask us — we arrange additional certification on request.
How to order LWBE3G400-102NS-15
Most first orders follow the same eight steps. Quantities, terms and lead times are confirmed in your quotation.
- 1SelectFind models by duty point in the selector or by model number, compare on the curve and add them to your RFQ list.
- 2Engineering checkWithin 1 business day you receive the duty-point check on the curve, price and lead time.
- 3SamplesStock models ship in 1–3 days.
- 4Validation supportDatasheets, drawings, wiring diagrams and DoC per model; test reports, CAD and register maps after a short project check or NDA.
- 5Order & paymentProforma invoice; first orders on T/T 30 / 70.
- 6Production & release15–30 days at the partner factory that builds your model, then inspected and released to LONGWELL standards with outgoing sampling to AQL 2.5.
- 7ShippingFOB / CIF / DDP by sea from Ningbo or Shanghai; express and air on EXW / FCA / DAP.
- 8After-sales12 months standard, extendable to 18–24 months by project agreement; test records retained for 5 years; 8D closed-loop for any issue; annual technical review for framework customers.
Test & release at LONGWELL
Specified and drawn by LONGWELL; built to LONGWELL drawings by qualified partner factories; inspected and released to LONGWELL standards before shipment.
See test and release photos (8)
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 |
| LWBE3G400-102NS-02 | 3,914 m³/h | 556.2 Pa | 1,430 rpm | 330 W | 70 dB(A) | 230 V | View |
| LWBE3G400-102PS-09 | 4,463 m³/h | 420 Pa | 1,250 rpm | 297 W | — | 230 V | View |
| LWBE3G400-102NS-14 | 4,463 m³/h | 420 Pa | 1,250 rpm | 297 W | 62 dB(A) | 230 V | View |
| LWBE3G400-102PS-10 | 5,615 m³/h | 622 Pa | 1,520 rpm | 500 W | — | 230 V | View |
| LWBE3G400-102NS-11 | 6,489 m³/h | 978.5 Pa | 1,800 rpm | 700 W | 85 dB(A) | 230 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.
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
LWBE3G355-092PS-15Ø355 mm · 2,472 m³/h · 350 Pa · ECadjacent size
LWBE3G355-102PS-18Ø355 mm · 3,915 m³/h · 770 Pa · ECadjacent size
LWBE3G355-102PS-17Ø355 mm · 3,142 m³/h · 670 Pa · ECadjacent size
LWBE3G355-102PS-16Ø355 mm · 3,554 m³/h · 618 Pa · ECadjacent size
LWBE3G355-138PT-05Ø355 mm · 7,045 m³/h · 830 Pa · ECadjacent size
LWBE3G355-102NS-15Ø355 mm · 3,915 m³/h · 770 Pa · ECadjacent 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
Go deeper on longwellfans.com
Application guides, project stories and engineering calculators for centrifugal fans — on our main site.
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