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.
- ImpellerØ355 mm14.0 in
- Max airflow4,635 m³/h2,728 CFM
- Max static pressure1,339 Pa5.38 in. wg
- Voltage380 V
- Speed2,700 rpm
- Input power1,600 W2.14 hp
- Noise90 dB(A)
LWBA2D355-188NT-17 AC Backward Curved Centrifugal Fan Ø355 mm
Ø355 mm | AC | Max airflow 4,635 m³/h | Max static pressure 1,339 Pa | 90 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.
Downloads for LWBA2D355-188NT-17
PDFDatasheet · 2.1 MBNeed a non-standard size or another format? Ask an engineer or search the download center.
LWBA2D355-188NT-17 is a LONGWELL AC Backward Curved Centrifugal Fan from the Backward Curved Centrifugal Fans range, impeller Ø355 mm, rated 380 V AC, maximum airflow 4,635 m³/h, maximum static pressure 1,339 Pa, noise 90 dB(A), input power 1,600 W. The fixed-speed AC external-rotor motor is simple, robust and cost-effective for constant-duty applications.
Technical data
| Model | LWBA2D355-188NT-17 |
|---|---|
| Series | LWBA2D355 |
| Motor type | AC |
| Phase | 3-phase |
| Rated voltage | 380 V |
| Frequency | 50 Hz |
| Current | 2.6 A |
| Input power | 1,600 W |
| Speed | 2,700 rpm |
| Max. airflow | 4,635 m³/h |
| Max. static pressure | 1,339 Pa |
| Noise | 90 dB(A) |
| Ambient temperature | -40 ~ 65 °C |
| Impeller diameter | Ø355 mm |
| Rotor diameter | 188 |
| 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 LWBA2D355: 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 (Ø355 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 | |
|---|---|---|---|---|---|---|---|
| LWBA2D355-188NT-17 this model | 4,635 m³/h | 1,339 Pa | 2,700 rpm | 1,600 W | 90 dB(A) | 380 V | |
| LWDA-355 (14")U-MWN-03 | 2,130 m³/h | see curve | 1,720 rpm | 260 W | 63 dB(A) | 110-120 V | View |
| LWBA4E355-102NS-16 | 2,636 m³/h | 410 Pa | 1,425 rpm | 203 W | 69.9 dB(A) | 230 V | View |
| LWBA4E355-102NS-15 | 3,035 m³/h | 546 Pa | 1,635 rpm | 268 W | 73.8 dB(A) | 230 V | View |
| LWBA4D355-102NT-10 | 3,245 m³/h | 515 Pa | 1,600 rpm | 270 W | 67 dB(A) | 380 V | View |
| LWEA355S(T)M-159E | 3,265 m³/h | 93 Pa | 1,450 rpm | 370 W | — | 220 V | View |
| LWBA4E355-138NS-13 | 3,399 m³/h | 464 Pa | 1,400 rpm | 400 W | 72 dB(A) | 230 V | View |
| LWBA4D355-138NT-11 | 3,399 m³/h | 464 Pa | 1,450 rpm | 360 W | 72 dB(A) | 380 V | View |
| LWBA4E355-138NS-14 | 4,017 m³/h | 618 Pa | 1,700 rpm | 600 W | 77 dB(A) | 230 V | View |
| LWBA4D355-138NT-12 | 4,017 m³/h | 618 Pa | 1,700 rpm | 550 W | 77 dB(A) | 380 V | View |
| LWFA6D355-188NT-02 | 4,172 m³/h | 412 Pa | 900 rpm | 1,150 W | 70 dB(A) | 380 V | View |
| LWFA4D355-188NT-01 | 5,665 m³/h | 906.4 Pa | 1,340 rpm | 3,500 W | 80 dB(A) | 380 V | View |
| LWBA2D355-188NT-18 | 5,974 m³/h | 1,339 Pa | 2,700 rpm | 2,500 W | 90 dB(A) | 380 V | View |
| LWDA-355 (14")S-MWN-04 | 6,450 m³/h | see curve | 2,900 rpm | 903 W | 68 dB(A) | 220-240 V | View |
| LWEA355S(T)M-160E | 6,542 m³/h | 373 Pa | 2,900 rpm | 750 W | — | 220 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 LWBA2D355 seriesSame impeller, different speed grade or wiring
Adjacent sizesOne size up when airflow is short, one size down when it is too much
LWBA4D315-138NT-15Ø315 mm · 2,318 m³/h · 371 Pa · ACadjacent size
LWBA4E315-102NS-18Ø315 mm · 2,079 m³/h · 399 Pa · ACadjacent size
LWBA2D315-188NT-17Ø315 mm · 4,120 m³/h · 1,082 Pa · ACadjacent size
LWBA4D315-138NT-16Ø315 mm · 2,781 m³/h · 515 Pa · ACadjacent size
LWBA4E315-102NS-19Ø315 mm · 1,859 m³/h · 294 Pa · ACadjacent size
LWBA4E315-138NS-13Ø315 mm · 2,318 m³/h · 371 Pa · ACadjacent sizeAlternatives at a similar dutySimilar airflow, different construction or motor platform
LWAA4D450S-5MEB-03Ø450 mm · 4,635 m³/h · ACsimilar duty
LWAA4E450S-5MEB-01Ø450 mm · 4,635 m³/h · ACsimilar duty
LWAA4E450B-5MKB-22Ø450 mm · 4,635 m³/h · ACsimilar duty
LWEA400S(T)M-161EØ400 mm · 4,687 m³/h · 119 Pa · ACsimilar duty
LWEA315S(T)M-158EØ315 mm · 4,545 m³/h · 373 Pa · ACsimilar duty
LWAA4D400S-5MEB-11Ø400 mm · 4,532 m³/h · ACsimilar dutySee all Backward Curved Centrifugal Fans · select by duty point