- ImpellerØ300 mm11.8 in
- Max airflow3,100 m³/h1,825 CFM
- Max static pressure422 Pa1.69 in. wg
- Noise66 dB(A)
LWFA-E-300-03 LWFA Series Direct Drive Centrifugal Blower Ø300 mm
Ø300 mm | AC | Max airflow 3,100 m³/h | Max static pressure 422 Pa | 66 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
Catalogue table & Curve LWFA-E-300-03
Files for LWFA-E-300-03: datasheet, catalogue and drawing PDFs are listed above ↑ · CAD (STEP / DWG) on request — ask an engineer.
Technical description LWFA-E-300-03
LWFA-E-300-03 is a LONGWELL LWFA Series Direct Drive Centrifugal Blower from the Impeller Ø280–500 mm range, impeller Ø300 mm, maximum airflow 3,100 m³/h, maximum static pressure 422 Pa, noise 66 dB(A). The fixed-speed AC external-rotor motor is simple, robust and cost-effective for constant-duty applications.
Technical data
| Model | LWFA-E-300-03 |
|---|---|
| Motor type | AC |
| Max. airflow | 3,100 m³/h |
| Max. static pressure | 422 Pa |
| Noise | 66 dB(A) |
| Impeller diameter | Ø300 mm |
| Blade diameter | 300mm |
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-300-03
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 (Ø300 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-300-03 this model | 3,100 m³/h | 422 Pa | — | — | 66 dB(A) | — | |
| LWFA-E-300-02 | 2,900 m³/h | 408 Pa | — | — | 65 dB(A) | — | View |
| LWFA-E-300-01 | 4,300 m³/h | 720 Pa | — | — | 72 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
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-280-01Ø280 mm · 2,600 m³/h · 490 Pa · ACadjacent size
LWFA-E-280-02Ø280 mm · 2,100 m³/h · 220 Pa · ACadjacent size
LWDD10-10-ECØ254 mm · 4,102 m³/h · 608 Pa · ECadjacent size
LWDD10-8-ECØ254 mm · 3,458 m³/h · 528 Pa · ECadjacent sizeAlternatives at a similar dutySimilar airflow, different construction or motor platform
LWCE-1501000SN-06Ø150 mm · 3,100 m³/h · 119 Pa · ECsimilar duty
LWAA2D300S-5MBW-05Ø300 mm · 3,090 m³/h · ACsimilar dutyLWAA2E300S-5MBW-07Ø300 mm · 3,090 m³/h · ACsimilar duty
LWAA4E350S-5MEB-02Ø350 mm · 3,090 m³/h · ACsimilar duty
LWAA6D400S-5MEB-08Ø400 mm · 3,090 m³/h · ACsimilar duty
LWAA6E400S-5MEB-06Ø400 mm · 3,090 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