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 airflow1,331 m³/h783 CFM
- Max static pressure649 Pa2.61 in. wg
- Voltage115 V
- Speed2,760 rpm
- Input power160 W
- Noise68 dB(A)
LWBE3G250-072NU-20 EC Backward Curved Centrifugal Fan Ø250 mm
Ø250 mm | EC | Max airflow 1,331 m³/h | Max static pressure 649 Pa | 68 dB(A)
- Factory direct
- OEM / ODM
- Samples in 1–3 days
- Production 15–30 days
- 18-month warranty
- CE · ETL · RoHS
LWBE3G250-072NU-20 — construction, airflow path and running condition.
Downloads for LWBE3G250-072NU-20
PDFDatasheet · 103 KBNeed a non-standard size or another format? Ask an engineer or search the download center.
LWBE3G250-072NU-20 is a LONGWELL EC Backward Curved Centrifugal Fan from the Backward Curved Centrifugal Fans range, impeller Ø250 mm, rated 115 V EC, maximum airflow 1,331 m³/h, maximum static pressure 649 Pa, noise 68 dB(A), input power 160 W. The EC motor integrates the drive electronics: stepless speed control by 0–10 V or PWM signal, speed feedback and high efficiency at part load.
Technical data
| Model | LWBE3G250-072NU-20 |
|---|---|
| Series | LWBE3G250 |
| Motor type | EC |
| Phase | 1-phase |
| Rated voltage | 115 V |
| Frequency | 50 Hz |
| Current | 2.28 A |
| Input power | 160 W |
| Speed | 2,760 rpm |
| Max. airflow | 1,331 m³/h |
| Max. static pressure | 649 Pa |
| Noise | 68 dB(A) |
| Ambient temperature | -25 ~ 60 °C |
| Impeller diameter | Ø250 mm |
| Rotor diameter | 72 |
| Impeller material | Plastic PA66 |
| Protection class | IP44 |
| Insulation class | F |
| Bearing | Maintenance-free ball bearings |
| Duty | S1 |
| 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 LWBE3G250: 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 · EC)
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 | |
|---|---|---|---|---|---|---|---|
| LWBE3G250-072NU-20 this model | 1,331 m³/h | 649 Pa | 2,760 rpm | 160 W | 68 dB(A) | 115 V | |
| LWBE3G250-072PS-15 | 1,215 m³/h | 391 Pa | 2,150 rpm | 90 W | 68 dB(A) | 230 V | View |
| LWFE3G250-072PS-02 | 1,236 m³/h | 515 Pa | 2,180 rpm | 115 W | 62 dB(A) | 230 V | View |
| LWBE3G250-092PS-21 | 1,421 m³/h | 556 Pa | 2,600 rpm | 170 W | 69 dB(A) | 230 V | View |
| LWBE3G250-072PS-17 | 1,421 m³/h | 639 Pa | 2,760 rpm | 140 W | 77 dB(A) | 230 V | View |
| LWFE3G250-072PS-04 | 1,478.05 m³/h | 927 Pa | 2,570 rpm | 169 W | 71 dB(A) | 230 V | View |
| LWBE3G250-102PS-22 | 1,524 m³/h | 773 Pa | 3,150 rpm | 240 W | 78 dB(A) | 230 V | View |
| LWBE3G250-092PS-16 | 1,531 m³/h | 785 Pa | 3,010 rpm | 140 W | 72.1 dB(A) | 230 V | View |
| LWFE3G250-092PS-05 | 1,648 m³/h | 721 Pa | 2,700 rpm | 230 W | 71 dB(A) | 230 V | View |
| LWBE3G250-102PS-24 | 1,700 m³/h | 1,082 Pa | 3,500 rpm | 370 W | 82 dB(A) | 230 V | View |
| LWBE3G250-092PS-20 | 1,730 m³/h | 525 Pa | 2,500 rpm | 145 W | 74 dB(A) | 230 V | View |
| LWBE3G250-102PS-23 | 1,751 m³/h | 824 Pa | 3,170 rpm | 270 W | 84 dB(A) | 230 V | View |
| LWFE3G250-102PS-06 | 2,472 m³/h | 1,545 Pa | 3,650 rpm | 520 W | 85 dB(A) | 230 V | View |
| LWFE3G250-102PS-07 | 3,038.5 m³/h | 1,442 Pa | 4,100 rpm | 750 W | 93 dB(A) | 230 V | View |
| LWFE3G250-102PT-08 | 3,708 m³/h | 1,751 Pa | 3,860 rpm | 1,000 W | 92 dB(A) | 400 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 LWBE3G250 seriesSame impeller, different speed grade or wiring
LWBE3G250-072NS-08Ø250 mm · 1,184.5 m³/h · 618 Pa · ECsame series
LWBE3G250-072NS-18Ø250 mm · 1,236 m³/h · 515 Pa · ECsame series
LWBE3G250-072NS-09Ø250 mm · 1,478.05 m³/h · 927 Pa · ECsame series
LWBE3G250-072NU-34Ø250 mm · 1,478.05 m³/h · 927 Pa · ECsame series
LWBE3G250-072NU-32Ø250 mm · 1,184.5 m³/h · 618 Pa · ECsame series
LWBE3G250-072NU-33Ø250 mm · 1,236 m³/h · 515 Pa · ECsame seriesAdjacent 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
LWFA6D225-138NT-03Ø225 mm · 1,339 m³/h · 236.9 Pa · ACsimilar duty
LWBA2D225-092NT-07Ø225 mm · 1,318 m³/h · 788 Pa · ACsimilar duty
LWCD-90800MN-06Ø90 mm · 1,348 m³/h · 157 Pa · DCsimilar duty
LWBE3G225-072NS-07Ø225 mm · 1,313.25 m³/h · 1,030 Pa · ECsimilar duty
LWBE3G225-072NU-16Ø225 mm · 1,313.25 m³/h · 1,030 Pa · ECsimilar duty
LWFE3G225-072PS-03Ø225 mm · 1,313.25 m³/h · 1,030 Pa · ECsimilar dutySee all Backward Curved Centrifugal Fans · select by duty point