Representative image of the series — dimensions and configuration of this model are given in the drawing and data table below.
- ImpellerØ500 mm19.7 in
- Max airflow9,785 m³/h5,759 CFM
- Max static pressure773 Pa3.10 in. wg
- Voltage380 V
- Speed1,400 rpm
- Input power1,500 W2.01 hp
- Noise80 dB(A)
LWBA4D500-188NT-02 AC Backward Curved Centrifugal Fan Ø500 mm
Ø500 mm | AC | Max airflow 9,785 m³/h | Max static pressure 773 Pa | 80 dB(A)
- Direct from LONGWELL
- OEM / ODM
- Samples in 1–3 days
- Production 15–30 days
- 12-month warranty
- CE · RoHS · ETL on request
CAD models (STEP / DWG) are released on request — see “Engineering files” below. Another format or a non-standard variant? Ask an engineer · download center
Performance curve (P-Q) LWBA4D500-188NT-02
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 380 V). Data version: catalogue curve re-digitised 2026-09-20 (axis-calibrated, cross-checked). 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.
Dimensional drawing LWBA4D500-188NT-02
Files for LWBA4D500-188NT-02: datasheet, catalogue and drawing PDFs are listed above ↑ · CAD (STEP / DWG) on request — ask an engineer.
Technical description LWBA4D500-188NT-02
LWBA4D500-188NT-02 is a LONGWELL AC Backward Curved Centrifugal Fan from the Backward Curved Centrifugal Fans range, impeller Ø500 mm, rated 380 V AC, maximum airflow 9,785 m³/h, maximum static pressure 773 Pa, noise 80 dB(A), input power 1,500 W. The fixed-speed AC external-rotor motor is simple, robust and cost-effective for constant-duty applications.
Technical data
| Model | LWBA4D500-188NT-02 |
|---|---|
| Series | LWBA4D500 |
| Motor type | AC |
| Phase | 3-phase |
| Rated voltage | 380 V |
| Frequency | 50 Hz |
| Current | 2.6 A |
| Input power | 1,500 W |
| Speed | 1,400 rpm |
| Max. airflow | 9,785 m³/h |
| Max. static pressure | 773 Pa |
| Noise | 80 dB(A) |
| Ambient temperature | -40 ~ 65 °C |
| Impeller diameter | Ø500 mm |
| Rotor diameter | 188 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 LWBA4D500: 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.
Company certificates
Scans of original documents held by Ningbo Longwell Electric Technology Co., Ltd.: the company ISO 9001 / 14001 / 45001 management-system certificate. Click a scan to open the original.
ISO 9001 / 14001 / 45001Management systems of Ningbo Longwell Electric Technology Co., Ltd. (company certificate).
PDFISO 9001 / 14001 / 45001 management system certificateNeed a Declaration of Conformity for this model and your destination market? Ask us — we arrange additional certification on request.
How to order LWBA4D500-188NT-02
Most first orders follow the same eight steps. Quantities, terms and lead times are confirmed in your quotation.
- 1SelectFind models by duty point in the selector or by model number, compare on the curve and add them to your RFQ list.
- 2Engineering checkWithin 1 business day you receive the duty-point check on the curve, price and lead time.
- 3SamplesStock models ship in 1–3 days.
- 4Validation supportDatasheets, drawings, wiring diagrams and DoC per model; test reports, CAD and register maps after a short project check or NDA.
- 5Order & paymentProforma invoice; first orders on T/T 30 / 70.
- 6Production & release15–30 days at the partner factory that builds your model, then inspected and released to LONGWELL standards with outgoing sampling to AQL 2.5.
- 7ShippingFOB / CIF / DDP by sea from Ningbo or Shanghai; express and air on EXW / FCA / DAP.
- 8After-sales12 months standard, extendable to 18–24 months by project agreement; test records retained for 5 years; 8D closed-loop for any issue; annual technical review for framework customers.
Test & release at LONGWELL
Specified and drawn by LONGWELL; built to LONGWELL drawings by qualified partner factories; inspected and released to LONGWELL standards before shipment.
See test and release photos (8)
Alternatives with the same impeller (Ø500 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 | |
|---|---|---|---|---|---|---|---|
| LWBA4D500-188NT-02 this model | 9,785 m³/h | 773 Pa | 1,400 rpm | 1,500 W | 80 dB(A) | 380 V | |
| LWBA6D500-138NT-03 | 5,356 m³/h | 361 Pa | 950 rpm | 450 W | 63 dB(A) | 380 V | View |
| LWBA6D500-138NT-04 | 5,817 m³/h | 412 Pa | 1,050 rpm | 550 W | 65 dB(A) | 380 V | View |
| LWBA4D500-188NT-01 | 8,034 m³/h | 618 Pa | 1,350 rpm | 1,000 W | 79 dB(A) | 380 V | View |
| LWFA6D500-188NT-01 | 9,064 m³/h | 916.7 Pa | 900 rpm | 4,400 W | 75 dB(A) | 380 V | View |
| LWBA4D500-188NT-05 | 9,377 m³/h | 872 Pa | 1,350 rpm | 1,300 W | 81.9 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 LWBA4D500 seriesSame impeller, different speed grade or wiring
Adjacent sizesOne size up when airflow is short, one size down when it is too much
LWFE3G450-102PT-06Ø450 mm · 8,652 m³/h · 1,390.5 Pa · ECadjacent size
LWBE3G450-102NS-21Ø450 mm · 5,050 m³/h · 417 Pa · ECadjacent size
LWBA4E450-138NS-02Ø450 mm · 6,077 m³/h · 618 Pa · ACadjacent size
LWBA4D450-138NT-01Ø450 mm · 6,077 m³/h · 618 Pa · ACadjacent size
LWBA4D450-188NT-03Ø450 mm · 6,695 m³/h · 618 Pa · ACadjacent size
LWBA6E450-138NS-05Ø450 mm · 4,017 m³/h · 309 Pa · ACadjacent sizeAlternatives at a similar dutySimilar airflow, different construction or motor platform
LWAA6E600B-5MKB-07Ø600 mm · 9,785 m³/h · ACsimilar duty
LWAA6E600S-5MEB-02Ø600 mm · 9,785 m³/h · ACsimilar duty
LWAA6D600S-5MEB-04Ø600 mm · 9,785 m³/h · ACsimilar dutyLWWAF-6.3A-0.37-6P-1-0019,760 m³/h · ACsimilar duty
LWPVC-915(36")T-029,720 m³/hsimilar duty
LWBE3G400-188PT-07Ø400 mm · 9,682 m³/h · 1,627 Pa · ECsimilar dutySee all Backward Curved Centrifugal Fans · select by duty point
Go deeper on longwellfans.com
Application guides, project stories and engineering calculators for centrifugal fans — on our main site.
Solutions
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- Data center coolingCRAH, FanGrid, server rooms