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.
- ImpellerØ125 mm
- Max airflow319 m³/h
- Max static pressure185 Pa
- Voltage230 V
- Speed2,550 rpm
- Input power40 W
- Noise25 dB(A)
LWDA-125S-PWN-11 AC Ultra Silent Plastic Duct Fan Ø125 mm
Ø125 mm | AC | Max airflow 319 m³/h | Max static pressure 185 Pa | 25 dB(A)
- Factory direct
- OEM / ODM
- Samples in 1–3 days
- Production 15–30 days
- 18-month warranty
- CE · ETL · RoHS
Need a non-standard size or another format? Ask an engineer or search the download center.
LWDA-125S-PWN-11 is a LONGWELL AC Ultra Silent Plastic Duct Fan from the Ultra Silent Duct Fans range, impeller Ø125 mm, rated 230 V AC, maximum airflow 319 m³/h, maximum static pressure 185 Pa, noise 25 dB(A), input power 40 W. The fixed-speed AC external-rotor motor is simple, robust and cost-effective for constant-duty applications.
Technical data
| Model | LWDA-125S-PWN-11 |
|---|---|
| Series | LWDA125 |
| Motor type | AC |
| Phase | 1-phase |
| Rated voltage | 230 V |
| Frequency | 50 Hz |
| Input power | 40 W |
| Speed | 2,550 rpm |
| Max. airflow | 319 m³/h |
| Max. static pressure | 185 Pa |
| Noise | 25 dB(A) |
| Storage temperature | -25 ~ 60℃ |
| Humidity | 15 ~ 85% RH |
| Altitude | < 1000m |
| Impeller diameter | Ø125 mm |
| Inlet diameter | 125mm |
| Balance grade | G6.3 |
| Vibration standard | JB/T 8689 |
| Service life | 50,000Hours(L10), At 25 °Croom, humidity 15%~65%RH |
Typical applications
- Residential and commercial fresh-air systems
- Kitchen and bathroom exhaust
- Local pressurisation and booster duty
- Hotel and office ventilation
Series LWDA125: 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 (Ø125 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 | |
|---|---|---|---|---|---|---|---|
| LWDA-125S-PWN-11 this model | 319 m³/h | 185 Pa | 2,550 rpm | 40 W | 25 dB(A) | 230 V | |
| LWDA-125(5")U-PWN-09 | 293 m³/h | 137 Pa | 1,950 rpm | 29 W | 30 dB(A) | 115 V | View |
| LWDA-125(5")S-PWN-07 | 293 m³/h | 137 Pa | 1,950 rpm | 28 W | 30 dB(A) | 230 V | View |
| LWDA-125S-MBN-10 | 294 m³/h | 326 Pa | 2,350 rpm | 52 W | 60 dB(A) | 230 V | View |
| LWDA-125(5")U-PWN-08 | 330 m³/h | 168 Pa | 2,360 rpm | 37 W | 31 dB(A) | 115 V | View |
| LWDA-125(5")S-PWN-06 | 330 m³/h | 168 Pa | 2,360 rpm | 39 W | 31 dB(A) | 230 V | View |
| LWDA-125 (5")U-PWN-01 | 410 m³/h | see curve | 3,350 rpm | 41 W | 52 dB(A) | 110-120 V | View |
| LWDA-125 (5")U-MWN-03 | 410 m³/h | see curve | 3,350 rpm | 41 W | 51 dB(A) | 110-120 V | View |
| LWDA-125 (5")S-PWN-02 | 605 m³/h | 168 Pa | 2,900 rpm | 41 W | 51 dB(A) | 220-240 V | View |
| LWDA-125 (5")S-MWN-04 | 605 m³/h | see curve | 2,900 rpm | 41 W | 49 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.
Related products
Other models in the LWDA125 seriesSame impeller, different speed grade or wiring
LWDA-125S-MBN-10Ø125 mm · 294 m³/h · 326 Pa · ACsame series
LWDA-125 (5")U-MWN-03Ø125 mm · 410 m³/h · ACsame series
LWDA-125 (5")S-MWN-04Ø125 mm · 605 m³/h · ACsame series
LWDA-125 (5")U-PWN-01Ø125 mm · 410 m³/h · ACsame series
LWDA-125 (5")S-PWN-02Ø125 mm · 605 m³/h · 168 Pa · ACsame series
LWDA-125(5")S-PWN-06Ø125 mm · 330 m³/h · 168 Pa · ACsame seriesAdjacent 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 sizeLWDA-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
LWFA2E133-092SS-03Ø133 mm · 319 m³/h · 433 Pa · ACsimilar duty
LWFD3G133-072SM-01Ø133 mm · 319 m³/h · 258 Pa · DCsimilar duty
LWFD3G133-072SH-01Ø133 mm · 319 m³/h · 258 Pa · DCsimilar duty
LWFD3G120-072SZ-01Ø120 mm · 319 m³/h · 247 Pa · DCsimilar duty
LWFD3G120-072SZ-02Ø120 mm · 319 m³/h · 247 Pa · DCsimilar duty
LWFD3G133-072SZ-01Ø133 mm · 319 m³/h · 319 Pa · DCsimilar dutySee all Impeller Ø100–150 mm · select by duty point