- ImpellerØ400 mm15.7 in
- Max airflow5,100 m³/h3,002 CFM
- Max static pressure610 Pa2.45 in. wg
- Noise70 dB(A)
LWFA-E-400-02 LWFA Series Direct Drive Centrifugal Blower Ø400 mm
Ø400 mm | AC | Max airflow 5,100 m³/h | Max static pressure 610 Pa | 70 dB(A)
- Direct from LONGWELL
- OEM / ODM
- Samples in 1–3 days
- Production 15–30 days
- 12-month warranty
- CE · RoHS · ETL on request
CAD models (STEP / DWG) are released on request — see “Engineering files” below. Another format or a non-standard variant? Ask an engineer · download center
Performance curve (P-Q) LWFA-E-400-02
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 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.
Drawing & Curve LWFA-E-400-02
Files for LWFA-E-400-02: datasheet, catalogue and drawing PDFs are listed above ↑ · CAD (STEP / DWG) on request — ask an engineer.
Technical description LWFA-E-400-02
LWFA-E-400-02 is a LONGWELL LWFA Series Direct Drive Centrifugal Blower from the Impeller Ø280–500 mm range, impeller Ø400 mm, maximum airflow 5,100 m³/h, maximum static pressure 610 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-400-02 |
|---|---|
| Motor type | AC |
| Max. airflow | 5,100 m³/h |
| Max. static pressure | 610 Pa |
| Noise | 70 dB(A) |
| Impeller diameter | Ø400 mm |
| Blade diameter | 400mm |
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.
Company certificates
Scans of original documents held by Ningbo Longwell Electric Technology Co., Ltd.: the company ISO 9001 / 14001 / 45001 management-system certificate. 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 certificateNeed a Declaration of Conformity for this model and your destination market? Ask us — we arrange additional certification on request.
How to order LWFA-E-400-02
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 · 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-400-02 this model | 5,100 m³/h | 610 Pa | — | — | 70 dB(A) | — | |
| LWFA-E-400-01 | 4,500 m³/h | 612 Pa | — | — | 68 dB(A) | — | View |
Not sure which one? Send us the duty point (airflow / static pressure / noise limit) — use the selector or ask an engineer.
Adjacent sizesOne size up when airflow is short, one size down when it is too much
LWFA-E-350-01Ø350 mm · 2,950 m³/h · 370 Pa · ACadjacent size
LWFA-E-450-02Ø450 mm · 10,500 m³/h · 750 Pa · ACadjacent size
LWFA-E-450-01Ø450 mm · 6,230 m³/h · 710 Pa · ACadjacent size
LWDD12-9-ECØ305 mm · 5,836 m³/h · 491 Pa · ECadjacent size
LWDD12-12-ECØ305 mm · 5,298 m³/h · 437 Pa · ECadjacent size
LWFA-E-300-03Ø300 mm · 3,100 m³/h · 422 Pa · ACadjacent sizeAlternatives at a similar dutySimilar airflow, different construction or motor platform
LWMFAF400-01Ø400 mm · 5,100 m³/h · 1,390 Pa · ACsimilar duty
LWBA4D400-138NT-11Ø400 mm · 5,082 m³/h · 504 Pa · ACsimilar duty
LWAA4D400S-5MEB-12Ø400 mm · 5,150 m³/h · ACsimilar duty
LWAA4E450S-5MEB-14Ø450 mm · 5,150 m³/h · ACsimilar duty
LWFA4D315-188ST-01Ø315 mm · 5,150 m³/h · 695.25 Pa · ACsimilar duty
LWAA4E400S-5MEB-10Ø400 mm · 5,150 m³/h · ACsimilar dutySee all Commercial Centrifugal Blowers · select by duty point
Go deeper on longwellfans.com
Application guides, project stories and engineering calculators for commercial centrifugal blowers — on our main site.
Solutions
- Commercial HVACAHU, rooftop, fan coil, air curtain
- Home appliance coolingHoods, ovens, dryers, air conditioners