Need a non-standard size or another format? Ask an engineer or search the download center.
- ImpellerØ310 mm12.2 in
- Max airflow2,163 m³/h1,273 CFM
- Max static pressure510 Pa2.05 in. wg
- Voltage48 V
- Speed1,900 rpm
- Input power192 W
- Noise73 dB(A)
LWBD3G310-102NH-03 DC Backward Curved Centrifugal Fan Ø310 mm
Ø310 mm | DC | Max airflow 2,163 m³/h | Max static pressure 510 Pa | 73 dB(A)
- Factory direct
- OEM / ODM
- Samples in 1–3 days
- Production 15–30 days
- 18-month warranty
- CE · ETL · RoHS
Engineering files (on request)
CAD files exist for this model and can be released for assembly checks in SolidWorks / CATIA / Creo / Inventor.
CAD models contain the blade geometry and are not downloadable. Tell us the project; an engineer sends the file after a short check, normally within 1 business day.
LWBD3G310-102NH-03 is a LONGWELL DC Backward Curved Centrifugal Fan from the Backward Curved Centrifugal Fans range, impeller Ø310 mm, rated 48 V DC, maximum airflow 2,163 m³/h, maximum static pressure 510 Pa, noise 73 dB(A), input power 192 W. The low-voltage brushless DC motor suits battery-powered equipment and electronics cooling with speed control on demand.
Technical data
| Model | LWBD3G310-102NH-03 |
|---|---|
| Series | LWBD3G310 |
| Motor type | DC |
| Rated voltage | 48 V |
| Current | 4 A |
| Input power | 192 W |
| Speed | 1,900 rpm |
| Max. airflow | 2,163 m³/h |
| Max. airflow (CFM) | 1,272 CFM |
| Max. static pressure | 510 Pa |
| Noise | 73 dB(A) |
| Ambient temperature | -25 ~ 60 °C |
| Storage temperature | -25 ~ 60℃ |
| Humidity | 5 ~ 90 % RH |
| Altitude | < 1000m |
| Impeller diameter | Ø310 mm |
| Rotor diameter | 102 |
| Impeller material | Aluminum alloy ( Impeller ) |
| Protection class | IP44 |
| Insulation class | B |
| 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 |
| Speed control | Control input 0~10VDC/PWM |
| Control signal | Control signal VSP voltage range1VDC~10VDC(During normal operation, when the VSP voltage is below 1.2VDC, the motor switches from operating mode to standby mode) |
| PWM input | PWM signal: frequency 1K–10KHz, amplitude 10V,duty cycle 10%–100% . |
| Speed feedback | Tach output: 4 Pulse/R; FG internal open circuit output, external pull-up resistor R, pull-up voltage V+ |
| Protection functions | Polarity Protection |
| 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 LWBD3G310: 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 (Ø310 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 | |
|---|---|---|---|---|---|---|---|
| LWBD3G310-102NH-03 this model | 2,163 m³/h | 510 Pa | 1,900 rpm | 192 W | 73 dB(A) | 48 V | |
| LWBD3G310-092NZ-05 | 2,235 m³/h | 474 Pa | 1,850 rpm | 160 W | 75 dB(A) | 310 V | View |
| LWBD3G310-092NH-02 | 2,266 m³/h | 391 Pa | 1,600 rpm | 120 W | 72 dB(A) | 48 V | View |
| LWBD3G310-092NM-01 | 2,266 m³/h | 391 Pa | 1,600 rpm | 120 W | 72 dB(A) | 24 V | View |
| LWBD3G310-102NH-04 | 2,524 m³/h | 530 Pa | 1,970 rpm | 230 W | 75 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 LWBD3G310 seriesSame impeller, different speed grade or wiring
Adjacent sizesOne size up when airflow is short, one size down when it is too much
LWBA2D315-188NT-17Ø315 mm · 4,120 m³/h · 1,082 Pa · ACadjacent size
LWBA6E315-102NS-08Ø315 mm · 1,133 m³/h · 185 Pa · ACadjacent size
LWBA4E315-138NS-14Ø315 mm · 2,781 m³/h · 515 Pa · ACadjacent size
LWBA4D315-138NT-15Ø315 mm · 2,318 m³/h · 371 Pa · ACadjacent size
LWBA4D315-138NT-16Ø315 mm · 2,781 m³/h · 515 Pa · ACadjacent size
LWFA4D315-188ST-01Ø315 mm · 5,150 m³/h · 695.25 Pa · ACadjacent sizeAlternatives at a similar dutySimilar airflow, different construction or motor platform
LWBA2E280-102NS-07Ø280 mm · 2,163 m³/h · 773 Pa · ACsimilar duty
LWBA2D280-102NT-08Ø280 mm · 2,163 m³/h · 773 Pa · ACsimilar duty
LWBA4E315-102NS-06Ø315 mm · 2,163 m³/h · 412 Pa · ACsimilar duty
LWBA4D315-102NT-10Ø315 mm · 2,163 m³/h · 412 Pa · ACsimilar duty
LWBA6E400-102NS-05Ø400 mm · 2,163 m³/h · 216 Pa · ACsimilar duty
LWBA(RT)355-PW-012,160 m³/hsimilar dutySee all Backward Curved Centrifugal Fans · select by duty point