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.
- ImpellerØ175 mm6.9 in
- Max airflow618 m³/h364 CFM
- Max static pressure515 Pa2.07 in. wg
- Voltage48 V
- Speed3,900 rpm
- Input power75 W
- Noise71 dB(A)
LWBD3G175-072NH-03 DC Backward Curved Centrifugal Fan Ø175 mm
Ø175 mm | DC | Max airflow 618 m³/h | Max static pressure 515 Pa | 71 dB(A)
- Factory direct
- OEM / ODM
- Samples in 1–3 days
- Production 15–30 days
- 18-month warranty
- CE · ETL · RoHS
Downloads for LWBD3G175-072NH-03
PDFDatasheetNeed a non-standard size or another format? Ask an engineer or search the download center.
LWBD3G175-072NH-03 is a LONGWELL DC Backward Curved Centrifugal Fan from the Backward Curved Centrifugal Fans range, impeller Ø175 mm, rated 48 V DC, maximum airflow 618 m³/h, maximum static pressure 515 Pa, noise 71 dB(A), input power 75 W. The low-voltage brushless DC motor suits battery-powered equipment and electronics cooling with speed control on demand.
Technical data
| Model | LWBD3G175-072NH-03 |
|---|---|
| Series | LWBD3G175 |
| Motor type | DC |
| Rated voltage | 48 V |
| Current | 1.5 A |
| Input power | 75 W |
| Speed | 3,900 rpm |
| Max. airflow | 618 m³/h |
| Max. airflow (CFM) | 442 CFM |
| Max. static pressure | 515 Pa |
| Noise | 71 dB(A) |
| Ambient temperature | -25 ~ 60 °C |
| Storage temperature | -40 ~ 75℃ |
| Humidity | 5 ~ 90 % RH |
| Altitude | < 1000m |
| Impeller diameter | Ø175 mm |
| Rotor diameter | 72 |
| Impeller material | Propylene with glass-fiber reinforced ( Impeller ) |
| Protection class | IP42 |
| Insulation class | B |
| Bearing | Maintenance-free deep groove ball bearings |
| Duty | S1 |
| Balance grade | G6.3 |
| Vibration standard | JB/T 8689 |
| Service life | 50,000Hours(L10), At 40 °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 LWBD3G175: 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 (Ø175 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 | |
|---|---|---|---|---|---|---|---|
| LWBD3G175-072NH-03 this model | 618 m³/h | 515 Pa | 3,900 rpm | 75 W | 71 dB(A) | 48 V | |
| LWBD3G175-072NM-02 | 618 m³/h | 515 Pa | 3,900 rpm | 75 W | 71 dB(A) | 24 V | View |
| LWBD3G175-072NM-04 | 670 m³/h | 319 Pa | 2,800 rpm | 50 W | 68 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 LWBD3G175 seriesSame impeller, different speed grade or wiring
Adjacent sizesOne size up when airflow is short, one size down when it is too much
LWFE3G180-092SS-02Ø180 mm · 927 m³/h · 824 Pa · ECadjacent size
LWBA2E180-092NS-01Ø180 mm · 443 m³/h · 335 Pa · ACadjacent size
LWBA2E180-092NS-02Ø180 mm · 494 m³/h · 371 Pa · ACadjacent size
LWBA2E180-092NS-03Ø180 mm · 443 m³/h · 335 Pa · ACadjacent size
LWFE3G180-102DS-01Ø180 mm · 2,060 m³/h · 742 Pa · ECadjacent size
LWFE3G180-092DS-02Ø180 mm · 1,730 m³/h · 247 Pa · ECadjacent sizeAlternatives at a similar dutySimilar airflow, different construction or motor platform
LWFD3G180-092SM-01Ø180 mm · 618 m³/h · 618 Pa · DCsimilar duty
LWFD3G180-092SH-01Ø180 mm · 618 m³/h · 618 Pa · DCsimilar duty
LWBA4E190-092NS-06Ø190 mm · 618 m³/h · 386 Pa · ACsimilar duty
LWBA2E225-092NS-01Ø225 mm · 618 m³/h · 165 Pa · ACsimilar duty
LWBA2D225-092NT-03Ø225 mm · 618 m³/h · 165 Pa · ACsimilar dutySee all Backward Curved Centrifugal Fans · select by duty point