Digitised from the catalogue curve at standard air (20 °C, 101.3 kPa, 1.2 kg/m³); one curve per voltage / speed grade (1 here, rated 230 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.
- ImpellerØ400 mm15.7 in
- Max airflow2,163 m³/h1,273 CFM
- Max static pressure216 Pa0.87 in. wg
- Voltage230 V
- Speed940 rpm
- Input power135 W
- Noise56 dB(A)
LWBA6E400-102NS-05 AC Backward Curved Centrifugal Fan Ø400 mm
Ø400 mm | AC | Max airflow 2,163 m³/h | Max static pressure 216 Pa | 56 dB(A)
- Factory direct
- OEM / ODM
- Samples in 1–3 days
- Production 15–30 days
- 12-month warranty
- CE · RoHS · ETL on request
PDFDatasheet (PDF)electrical & performance dataPDFFull product catalogueAC AC Backward centrifugal fans · SKU on PDF p. 32
All files for LWBA6E400-102NS-053 files · direct download
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
Typical applications: Air conditioning · Air handling units · FanGrid arrays · FFU / EFU — all industries
Downloads for LWBA6E400-102NS-05
PDFFull product catalogue · AC AC Backward centrifugal fans · model on PDF p. 32 · 29.3 MBPDFDatasheet · 1.9 MBNeed a non-standard size or another format? Ask an engineer or search the download center.
LWBA6E400-102NS-05 is a LONGWELL AC Backward Curved Centrifugal Fan from the Backward Curved Centrifugal Fans range, impeller Ø400 mm, rated 230 V AC, maximum airflow 2,163 m³/h, maximum static pressure 216 Pa, noise 56 dB(A), input power 135 W. The fixed-speed AC external-rotor motor is simple, robust and cost-effective for constant-duty applications.
Technical data
| Model | LWBA6E400-102NS-05 |
|---|---|
| Series | LWBA6E400 |
| Motor type | AC |
| Phase | 1-phase |
| Rated voltage | 230 V |
| Frequency | 50 Hz |
| Current | 0.72 A |
| Input power | 135 W |
| Speed | 940 rpm |
| Max. airflow | 2,163 m³/h |
| Max. static pressure | 216 Pa |
| Noise | 56 dB(A) |
| Ambient temperature | -40 ~ 65 °C |
| Impeller diameter | Ø400 mm |
| Rotor diameter | 102 mm |
| Impeller material | Aluminum Alloy |
| Protection class | IP54 |
| 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 LWBA6E400: 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 (Ø400 mm · AC)
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 | |
|---|---|---|---|---|---|---|---|
| LWBA6E400-102NS-05 this model | 2,163 m³/h | 216 Pa | 940 rpm | 135 W | 56 dB(A) | 230 V | |
| LWBA6E400-102NS-06 | 2,421 m³/h | 278 Pa | 1,050 rpm | 155 W | 57 dB(A) | 230 V | View |
| LWBA4D400-102NT-03 | 2,936 m³/h | 464 Pa | 1,380 rpm | 265 W | 64 dB(A) | 380 V | View |
| LWBA4E400-102NS-01 | 2,936 m³/h | 464 Pa | 1,350 rpm | 260 W | 64 dB(A) | 230 V | View |
| LWBA4D400-102NT-04 | 3,090 m³/h | 515 Pa | 1,460 rpm | 320 W | 68 dB(A) | 380 V | View |
| LWBA4E400-102NS-02 | 3,090 m³/h | 515 Pa | 1,450 rpm | 330 W | 68 dB(A) | 230 V | View |
| LWBA4D400-138NT-10 | 4,120 m³/h | 494 Pa | 1,380 rpm | 440 W | 66 dB(A) | 380 V | View |
| LWBA4E400-138NS-09 | 4,120 m³/h | 494 Pa | 1,380 rpm | 430 W | 66 dB(A) | 230 V | View |
| LWBA4D400-138NT-08 | 4,532 m³/h | 494 Pa | 1,370 rpm | 550 W | 69 dB(A) | 380 V | View |
| LWBA4E400-138NS-07 | 4,532 m³/h | 494 Pa | 1,380 rpm | 550 W | 69 dB(A) | 230 V | View |
| LWBA4D400-138NT-11 | 5,082 m³/h | 504 Pa | 1,400 rpm | 484 W | 72 dB(A) | 380 V | View |
| LWFA8D400-188NT-03 | 5,974 m³/h | 345.05 Pa | 700 rpm | 1,700 W | 65 dB(A) | 380 V | View |
| LWFA4D400-188NT-01 | 6,695 m³/h | 1,030 Pa | 1,400 rpm | 4,800 W | 82 dB(A) | 380 V | View |
| LWFA6D400-188NT-02 | 7,313 m³/h | 540.75 Pa | 870 rpm | 2,800 W | 74 dB(A) | 380 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 LWBA6E400 seriesSame impeller, different speed grade or wiring
Adjacent sizesOne size up when airflow is short, one size down when it is too much
LWBE3G355-092PS-15Ø355 mm · 2,472 m³/h · 350 Pa · ECadjacent size
LWBE3G355-102PS-18Ø355 mm · 3,915 m³/h · 770 Pa · ECadjacent size
LWBE3G355-102PS-17Ø355 mm · 3,142 m³/h · 670 Pa · ECadjacent size
LWBE3G355-102PS-16Ø355 mm · 3,554 m³/h · 618 Pa · ECadjacent size
LWBE3G355-138PT-05Ø355 mm · 7,045 m³/h · 830 Pa · ECadjacent size
LWBE3G355-102NS-15Ø355 mm · 3,915 m³/h · 770 Pa · ECadjacent 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
LWBD3G310-102NH-03Ø310 mm · 2,163 m³/h · 510 Pa · DCsimilar duty
LWBA(RT)355-PW-012,160 m³/hsimilar dutySee all Backward Curved Centrifugal Fans · select by duty point