Representative image of the series — dimensions and configuration of this model are given in the drawing and data table below.
- ImpellerØ125 mm4.9 in
- Max airflow697 m³/h410 CFM
- Voltage220-240 V
- Speed3,350 rpm
- Input power35 W
- Noise52 dB(A)
LWDE-125 (5″)S-PWN-02 EC Mixed Flow Fan Ø125 mm
Ø125 mm | EC | Max airflow 697 m³/h | 52 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
Dimensional drawing LWDE-125 (5")S-PWN-02
Files for LWDE-125 (5")S-PWN-02: datasheet, catalogue and drawing PDFs are listed above ↑ · CAD (STEP / DWG) on request — ask an engineer.
Technical description LWDE-125 (5")S-PWN-02
LWDE-125 (5")S-PWN-02 is a LONGWELL EC Mixed Flow Fan from the Mixed Flow Fans range, impeller Ø125 mm, rated 220-240 V EC, maximum airflow 697 m³/h, noise 52 dB(A), input power 35 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 | LWDE-125 (5")S-PWN-02 |
|---|---|
| Series | LWDE125 |
| Motor type | EC |
| Phase | 1-phase |
| Rated voltage | 220-240 V |
| Frequency | 50 Hz |
| Input power | 35 W |
| Speed | 3,350 rpm |
| Max. airflow | 697 m³/h |
| Noise | 52 dB(A) |
| Impeller diameter | Ø125 mm |
| Inlet diameter | 125mm |
Typical applications
- Residential and commercial fresh-air systems
- Kitchen and bathroom exhaust
- Local pressurisation and booster duty
- Hotel and office ventilation
Series LWDE125: 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.
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 LWDE-125 (5")S-PWN-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 (Ø125 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 | |
|---|---|---|---|---|---|---|---|
| LWDE-125 (5")S-PWN-02 this model | 697 m³/h | see curve | 3,350 rpm | 35 W | 52 dB(A) | 220-240 V | |
| LWDE-125S-MBN-06 | 386 m³/h | 839 Pa | 3,400 rpm | 85 W | 69 dB(A) | 230 V | View |
| LWDE-125 (5")U-PWN-01 | 410 m³/h | see curve | 3,350 rpm | 35 W | 52 dB(A) | 110-120 V | View |
| LWDE-125 (5")U-MWN-03 | 410 m³/h | see curve | 3,350 rpm | 35 W | 51 dB(A) | 110-120 V | View |
| LWDE-125 (5")S-MWN-04 | 697 m³/h | see curve | 3,350 rpm | 35 W | 51 dB(A) | 220-240 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 LWDE125 seriesSame impeller, different speed grade or wiring
Adjacent sizesOne size up when airflow is short, one size down when it is too much
LWDE3G150-IS-03Ø147 mm · 705 m³/h · 465 Pa · ECadjacent size
LWDE3G150-IS-01Ø147 mm · 705 m³/h · 465 Pa · ECadjacent size
LWDA-100S-PWN-15Ø100 mm · 319 m³/h · 185 Pa · ACadjacent size
LWDA-150(6")U-PWN-13Ø150 mm · 674 m³/h · 355 Pa · ACadjacent size
LWDA-150(6")U-PWN-14Ø150 mm · 535 m³/h · 302 Pa · ACadjacent size
LWDD-100M-MBN-12Ø100 mm · 241 m³/h · 365 Pa · DCadjacent sizeAlternatives at a similar dutySimilar airflow, different construction or motor platform
See all Impeller Ø100–200 mm · select by duty point
Go deeper on longwellfans.com
Application guides, project stories and engineering calculators for inline duct fans — on our main site.
Solutions
- Residential ventilationERV / HRV, bathroom and duct fans
- Commercial HVACAHU, rooftop, fan coil, air curtain