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.
- Frame size40 mm
- Max airflow4.2 m³/h
- Max static pressure58 Pa
- Voltage5 V
- Speed8,000 rpm
- Input power1.75 W
- Noise31.3 dB(A)
LWFD4010KH-02 DC Centrifugal Blower 40 mm
40 mm | DC | Max airflow 4.2 m³/h | Max static pressure 58 Pa | 31.3 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.
LWFD4010KH-02 is a LONGWELL DC Centrifugal Blower from the DC Centrifugal Blowers range, frame size 40 mm, rated 5 V DC, maximum airflow 4.2 m³/h, maximum static pressure 58 Pa, noise 31.3 dB(A), input power 1.75 W. The low-voltage brushless DC motor suits battery-powered equipment and electronics cooling with speed control on demand.
Technical data
| Model | LWFD4010KH-02 |
|---|---|
| Series | LWFD4010 |
| Motor type | DC |
| Rated voltage | 5 V |
| Current | 0.35 A |
| Input power | 1.75 W |
| Speed | 8,000 rpm |
| Max. airflow | 4.2 m³/h |
| Max. static pressure | 58 Pa |
| Noise | 31.3 dB(A) |
| Frame size | 40 mm |
| Dimensions | 40x10mm |
| Impeller material | Plastic(UL94-VO) |
Typical applications
- Power supplies and inverters
- Telecom and server cabinets
- Battery packs and EV chargers
- Medical and laboratory equipment
Series LWFD4010: 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 frame size (40 mm · DC)
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 | |
|---|---|---|---|---|---|---|---|
| LWFD4010KH-02 this model | 4.2 m³/h | 58 Pa | 8,000 rpm | 1.75 W | 31.3 dB(A) | 5 V | |
| LWCD-40250MN-07 | 87 m³/h | 23 Pa | 2,400 rpm | 2.64 W | 35 dB(A) | 24 V | View |
| LWCD-40290MN-07 | 104 m³/h | 24 Pa | 2,400 rpm | 3.12 W | 35 dB(A) | 24 V | View |
| LWCD-40290LN-06 | 104 m³/h | 24 Pa | 2,400 rpm | 2.4 W | 35 dB(A) | 12 V | View |
| LWCD-40350MN-07 | 121 m³/h | 24 Pa | 2,400 rpm | 3.6 W | 36 dB(A) | 24 V | View |
| LWCD-40350LN-06 | 121 m³/h | 24 Pa | 2,400 rpm | 2.88 W | 36 dB(A) | 12 V | View |
| LWCD-40420MN-07 | 146 m³/h | 25 Pa | 2,400 rpm | 4.08 W | 37 dB(A) | 24 V | View |
| LWCD-40420LN-06 | 146 m³/h | 25 Pa | 2,400 rpm | 3.48 W | 37 dB(A) | 12 V | View |
| LWCD-40530MN-06 | 176 m³/h | 25 Pa | 2,400 rpm | 4.56 W | 37 dB(A) | 24 V | View |
| LWCD-40610MN-06 | 203 m³/h | 26 Pa | 2,400 rpm | 5.04 W | 37 dB(A) | 24 V | View |
| LWCD-40700MN-06 | 232 m³/h | 26 Pa | 2,400 rpm | 5.52 W | 38 dB(A) | 24 V | View |
| LWCD-40800MN-06 | 236 m³/h | 25 Pa | 2,000 rpm | 6 W | 35 dB(A) | 24 V | View |
| LWCD-40854MN-06 | 252 m³/h | 26 Pa | 2,000 rpm | 6.72 W | 35 dB(A) | 24 V | View |
| LWCD-40920MN-06 | 272 m³/h | 26 Pa | 2,000 rpm | 7.44 W | 36 dB(A) | 24 V | View |
| LWCD-401055MN-06 | 311 m³/h | 27 Pa | 2,000 rpm | 8.4 W | 36 dB(A) | 24 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 LWFD4010 seriesSame impeller, different speed grade or wiring
LWFD4010KX-0140 mm · 4.8 m³/h · 73 Pa · DCsame series
LWFD4010KM-0340 mm · 3.6 m³/h · 44 Pa · DCsame series
LWFD4010KL-0440 mm · 3 m³/h · 33 Pa · DCsame series
LWFD4010KD-0540 mm · 2.4 m³/h · 23 Pa · DCsame series
LWFD4010LX-0140 mm · 4.8 m³/h · 73 Pa · DCsame series
LWFD4010LH-0240 mm · 4.2 m³/h · 58 Pa · DCsame seriesAdjacent sizesOne size up when airflow is short, one size down when it is too much
LWA-680-0343 mm · 850 m³/h · 1,950 Pa · ACadjacent size
LWA-1100-0343 mm · 1,200 m³/h · 2,550 Pa · ACadjacent size
LWA-950-0343 mm · 1,050 m³/h · 2,400 Pa · ACadjacent size
LWA-750-0343 mm · 900 m³/h · 2,200 Pa · ACadjacent size
LWA-370-0437 mm · 760 m³/h · 1,500 Pa · ACadjacent size
LWA-550-0337 mm · 800 m³/h · 1,800 Pa · ACadjacent sizeAlternatives at a similar dutySimilar airflow, different construction or motor platform
See all Cooling Fans & Blowers · select by duty point