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.
- ImpellerØ250 mm9.8 in
- Max airflow577 m³/h340 CFM
- Max static pressure1,009 Pa4.05 in. wg
- Voltage48 V
- Speed3,000 rpm
- Input power150 W
- Noise79 dB(A)
LWBD3G250-092NH-05 DC Backward Curved Centrifugal Fan Ø250 mm
Ø250 mm | DC | Max airflow 577 m³/h | Max static pressure 1,009 Pa | 79 dB(A)
- Factory direct
- OEM / ODM
- Samples in 1–3 days
- Production 15–30 days
- 18-month warranty
- CE · ETL · RoHS
Downloads for LWBD3G250-092NH-05
PDFDatasheet · 712 KBNeed a non-standard size or another format? Ask an engineer or search the download center.
LWBD3G250-092NH-05 is a LONGWELL DC Backward Curved Centrifugal Fan from the Backward Curved Centrifugal Fans range, impeller Ø250 mm, rated 48 V DC, maximum airflow 577 m³/h, maximum static pressure 1,009 Pa, noise 79 dB(A), input power 150 W. The low-voltage brushless DC motor suits battery-powered equipment and electronics cooling with speed control on demand.
Technical data
| Model | LWBD3G250-092NH-05 |
|---|---|
| Series | LWBD3G250 |
| Motor type | DC |
| Rated voltage | 48 V |
| Current | 3.15 A |
| Input power | 150 W |
| Speed | 3,000 rpm |
| Max. airflow | 577 m³/h |
| Max. airflow (CFM) | 339 CFM |
| Max. static pressure | 1,009 Pa |
| Noise | 79 dB(A) |
| Ambient temperature | -25 ~ 60 °C |
| Storage temperature | -25 ~ 60℃ |
| Humidity | 5 ~ 90 % RH |
| Altitude | < 1000m |
| Impeller diameter | Ø250 mm |
| Rotor diameter | 92 |
| Impeller material | Galvanised sheet steel ( Impeller ) |
| Protection class | IP42 |
| Insulation class | F |
| Bearing | Maintenance-free deep groove ball bearings |
| Duty | S1 |
| Balance grade | G6.3 |
| Vibration standard | JB/T 8689 |
| Service life | 40,000Hours(L10), At 25 °Croom, humidity 15%~65%RH |
| Rotation | Clockwise,seen on rotor |
Typical applications
- Air handling units (AHU) and rooftop units (RTU)
- Data-center CRAH / CRAC units and fan walls
- Dust extraction and process ventilation
- Fan filter units and air purifiers
Series LWBD3G250: 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 (Ø250 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 | |
|---|---|---|---|---|---|---|---|
| LWBD3G250-092NH-05 this model | 577 m³/h | 1,009 Pa | 3,000 rpm | 150 W | 79 dB(A) | 48 V | |
| LWDD-250H-MBN-09 | 1,236 m³/h | 577 Pa | 2,638 rpm | 130 W | 72 dB(A) | 48 V | View |
| LWDD-250M-MBN-08 | 1,236 m³/h | 577 Pa | 2,638 rpm | 130 W | 72 dB(A) | 24 V | View |
| LWBD3G250-092NH-06 | 1,442 m³/h | 690 Pa | 3,000 rpm | 160 W | 79 dB(A) | 48 V | View |
| LWBD3G250-072NZ-07 | 1,483 m³/h | 597 Pa | 2,800 rpm | 110 W | 69 dB(A) | 310 V | View |
| LWAD3G250ZB-7MKW-08 | 1,751 m³/h | 288 Pa | 3,150 rpm | 135 W | 69 dB(A) | 310 V | View |
| LWAD3G250ZS-7MKW-07 | 1,751 m³/h | 288 Pa | 3,150 rpm | 135 W | 69 dB(A) | 310 V | View |
| LWAD3G250ZS-7MEW-05 | 1,751 m³/h | 288 Pa | 3,150 rpm | 135 W | 69 dB(A) | 310 V | View |
| LWAD3G250ZB-7MEW-06 | 1,751 m³/h | 288 Pa | 3,150 rpm | 135 W | 69 dB(A) | 310 V | View |
| LWAD3G250ZS-7MNW-03 | 1,751 m³/h | 288 Pa | 3,150 rpm | 135 W | 69 dB(A) | 310 V | View |
| LWAD3G250ZB-7MNW-04 | 1,751 m³/h | 288 Pa | 3,150 rpm | 135 W | 69 dB(A) | 310 V | View |
| LWAD3G250MS-7MKB-01 | 1,957 m³/h | 227 Pa | 2,780 rpm | 105 W | 69 dB(A) | 24 V | View |
| LWAD3G250HS-7MKB-02 | 1,957 m³/h | 227 Pa | 2,780 rpm | 105 W | 69 dB(A) | 48 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 LWBD3G250 seriesSame impeller, different speed grade or wiring
Adjacent sizesOne size up when airflow is short, one size down when it is too much
LWBE3G270-092NS-02Ø270 mm · 1,545 m³/h · 332 Pa · ECadjacent size
LWBE3G270-092NU-01Ø270 mm · 1,545 m³/h · 332 Pa · ECadjacent size
LWBA2E225-092NS-01Ø225 mm · 618 m³/h · 165 Pa · ACadjacent size
LWFA4D225-138ST-02Ø225 mm · 1,442 m³/h · 288.4 Pa · ACadjacent size
LWBA4E225-092NS-02Ø225 mm · 690 m³/h · 216 Pa · ACadjacent size
LWFA4D225-138NT-01Ø225 mm · 1,648 m³/h · 288.4 Pa · ACadjacent sizeAlternatives at a similar dutySimilar airflow, different construction or motor platform
LWFE3G150-092SS-01Ø150 mm · 577 m³/h · 412 Pa · ECsimilar duty
LWCA-80520SN-06Ø80 mm · 580 m³/h · 53 Pa · ACsimilar duty
LWAD17251MM-09172 mm · 580.8 m³/h · 314 Pa · DCsimilar duty
LWAD17251HM-09172 mm · 580.8 m³/h · 314 Pa · DCsimilar duty
LWFD3G160-092SH-01Ø160 mm · 570 m³/h · 609 Pa · DCsimilar duty
LWFA4E133-092DS-04Ø133 mm · 567 m³/h · 433 Pa · ACsimilar dutySee all Backward Curved Centrifugal Fans · select by duty point