Digitised from the catalogue curve at standard air (20 °C, 101.3 kPa, 1.2 kg/m³); one curve per voltage / speed grade (10 here, rated 115 V). Data version: catalogue 2026-08. 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.
Representative image of the series — dimensions and configuration of this model are given in the drawing and data table below.
- ImpellerØ190 mm7.5 in
- Max airflow973.35 m³/h572 CFM
- Max static pressure1,009.4 Pa4.05 in. wg
- Voltage115 V
- Speed4,100 rpm
- Input power170 W
- Noise72 dB(A)
LWBE3G190-072NU-20 EC Backward Curved Centrifugal Fan Ø190 mm
Ø190 mm | EC | Max airflow 973.35 m³/h | Max static pressure 1,009.4 Pa | 72 dB(A)
- Factory direct
- OEM / ODM
- Samples in 1–3 days
- Production 15–30 days
- 12-month warranty
- CE · ETL · RoHS
PDFDatasheet (PDF)electrical & performance dataPDFFull product catalogueEC ( ) EC Backward centrifugal fans #2 · SKU on PDF p. 12
All files for LWBE3G190-072NU-206 files · direct download
PDFFull product catalogue · model on PDF p. 12WEBPDimensional drawingWEBPPerformance curveWEBPWiring diagramDOCXDatasheet
CAD models (STEP / DWG) are released on request — see “Engineering files” below. Another format or a non-standard variant? Ask an engineer · download center
Proven in: AHU & ventilation unit fans · CRAH FanGrid retrofit · Heat pump fan programme — all case studies on longwellfans.com
Cross-reference: same impeller size class as ebm-papst K3G190, ebm-papst R3G190 — side-by-side comparison on longwellfans.com. Mounting is confirmed against the LONGWELL drawing before ordering.
Typical applications: Air conditioning · Air handling units · FanGrid arrays · FFU / EFU — all industries
LONGWELL 190mm EC Backward Curved Centrifugal Fan | LWBE3G190 · open in video library
Longwell EC Backward Curved Centrifugal Fans – Delivered Globally with Efficiency | LWBE3G190-072PS-03 · open in video library
Downloads for LWBE3G190-072NU-20
PDFDatasheetPDFFull product catalogue · EC ( ) EC Backward centrifugal fans #2 · model on PDF p. 12 · 27 MBDOCXDatasheet · 760 KBNeed a non-standard size or another format? Ask an engineer or search the download center.
LWBE3G190-072NU-20 is a LONGWELL EC Backward Curved Centrifugal Fan from the Backward Curved Centrifugal Fans range, impeller Ø190 mm, rated 115 V EC, maximum airflow 973.35 m³/h, maximum static pressure 1,009.4 Pa, noise 72 dB(A), input power 170 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 | LWBE3G190-072NU-20 |
|---|---|
| Series | LWBE3G190 |
| Motor type | EC |
| Phase | 1-phase |
| Rated voltage | 115 V |
| Frequency | 50 Hz |
| Current | 2.6 A |
| Input power | 170 W |
| Speed | 4,100 rpm |
| Max. airflow | 973.35 m³/h |
| Max. airflow (CFM) | 572 CFM |
| Max. static pressure | 1,009.4 Pa |
| Noise | 72 dB(A) |
| Ambient temperature | -25 ~ 60 °C |
| Storage temperature | -40 ~ 80℃ |
| Humidity | 5 ~ 90 % RH |
| Altitude | < 1000m |
| Impeller diameter | Ø190 mm |
| Rotor diameter | 72 mm |
| Impeller material | PA6+GF30% ( Impeller ) |
| Protection class | IP55 |
| 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 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 LWBE3G190: 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 (Ø190 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 | |
|---|---|---|---|---|---|---|---|
| LWBE3G190-072NU-20 this model | 973.35 m³/h | 1,009.4 Pa | 4,100 rpm | 170 W | 72 dB(A) | 115 V | |
| LWBE3G190-072NU-18 | 638.6 m³/h | 453.2 Pa | 2,940 rpm | 64 W | 65 dB(A) | 115 V | View |
| LWBE3G190-072NS-14 | 638.6 m³/h | 453.2 Pa | 2,940 rpm | 64 W | 65 dB(A) | 230 V | View |
| LWBE3G190-072NS-13 | 813.7 m³/h | 587.1 Pa | 3,300 rpm | 87 W | 70 dB(A) | 230 V | View |
| LWBE3G190-072PS-12 | 851 m³/h | 798 Pa | 4,230 rpm | 104 W | 70 dB(A) | 230 V | View |
| LWBE3G190-072NS-16 | 851 m³/h | 798 Pa | 4,230 rpm | 104 W | 70 dB(A) | 230 V | View |
| LWBE3G190-072NU-19 | 854.9 m³/h | 875.5 Pa | 3,800 rpm | 115 W | 71 dB(A) | 115 V | View |
| LWBE3G190-072NS-15 | 854.9 m³/h | 803.4 Pa | 3,700 rpm | 135 W | 70 dB(A) | 230 V | View |
| LWBE3G190-072NS-12 | 854.9 m³/h | 875.5 Pa | 3,800 rpm | 115 W | 71 dB(A) | 230 V | View |
| LWBE3G190-072NS-06 | 973.35 m³/h | 1,009.4 Pa | 4,100 rpm | 170 W | 72 dB(A) | 230 V | View |
Not sure which one? Send us the duty point (airflow / static pressure / noise limit) — use the selector or ask an engineer.
Other models in the LWBE3G190 seriesSame impeller, different speed grade or wiring
LWBE3G190-072NS-13Ø190 mm · 813.7 m³/h · 587.1 Pa · ECsame series
LWBE3G190-072NS-12Ø190 mm · 854.9 m³/h · 875.5 Pa · ECsame series
LWBE3G190-072NS-06Ø190 mm · 973.35 m³/h · 1,009.4 Pa · ECsame series
LWBE3G190-072NS-14Ø190 mm · 638.6 m³/h · 453.2 Pa · ECsame series
LWBE3G190-072NS-15Ø190 mm · 854.9 m³/h · 803.4 Pa · ECsame series
LWBE3G190-072NU-18Ø190 mm · 638.6 m³/h · 453.2 Pa · ECsame seriesAdjacent sizesOne size up when airflow is short, one size down when it is too much
LWFD3G197-072DZ-01Ø197 mm · 1,197 m³/h · 525 Pa · DCadjacent size
LWFA4D200-102NT-01Ø200 mm · 1,236 m³/h · 226.6 Pa · ACadjacent size
LWBA2E180-092NS-02Ø180 mm · 494 m³/h · 371 Pa · ACadjacent size
LWFA4E180-092NS-01Ø180 mm · 773 m³/h · 195.7 Pa · ACadjacent size
LWBA2E180-092NS-03Ø180 mm · 443 m³/h · 335 Pa · ACadjacent size
LWFA4E200-102NS-02Ø200 mm · 1,236 m³/h · 226.6 Pa · ACadjacent sizeAlternatives at a similar dutySimilar airflow, different construction or motor platform
See all Backward Curved Centrifugal Fans · select by duty point