- ImpellerØ225 mm8.9 in
- Max airflow1,092 m³/h643 CFM
- Max static pressure515 Pa2.07 in. wg
- Voltage24 V
- Speed2,700 rpm
- Input power100 W
- Noise72 dB(A)
LWBD3G225-092NM-04 DC Backward Curved Centrifugal Fan Ø225 mm
Ø225 mm | DC | Max airflow 1,092 m³/h | Max static pressure 515 Pa | 72 dB(A)
- Direct from LONGWELL
- OEM / ODM
- Samples in 1–3 days
- Production 15–30 days
- 12-month warranty
- CE · ETL · RoHS
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) LWBD3G225-092NM-04
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 24 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.
Drawing, Curve & Wiring LWBD3G225-092NM-04
Files for LWBD3G225-092NM-04: datasheet, catalogue and drawing PDFs are listed above ↑ · CAD (STEP / DWG) on request — ask an engineer.
Technical description LWBD3G225-092NM-04
LWBD3G225-092NM-04 is a LONGWELL DC Backward Curved Centrifugal Fan from the Backward Curved Centrifugal Fans range, impeller Ø225 mm, rated 24 V DC, maximum airflow 1,092 m³/h, maximum static pressure 515 Pa, noise 72 dB(A), input power 100 W. The low-voltage brushless DC motor suits battery-powered equipment and electronics cooling with speed control on demand.
Technical data
| Model | LWBD3G225-092NM-04 |
|---|---|
| Series | LWBD3G225 |
| Motor type | DC |
| Rated voltage | 24 V |
| Current | 4.17 A |
| Input power | 100 W |
| Speed | 2,700 rpm |
| Max. airflow | 1,092 m³/h |
| Max. static pressure | 515 Pa |
| Noise | 72 dB(A) |
| Ambient temperature | -25 ~ 60 °C |
| Storage temperature | -25 ~ 80℃ |
| Humidity | 5 ~ 90 % RH |
| Altitude | < 1000m |
| Impeller diameter | Ø225 mm |
| Rotor diameter | 92 mm |
| Impeller material | Aluminuml Sheet ( Impeller ) Bearing Maintenance-free deep groove ball bearings Weight APPROX 2.7 (Kg) LONGWELL ELL LON Version number : A0 NINGBO LONGWELL ELECTRIC TECHNOLOGY CO.,LTD . Phone: 0086 574 6218 9863 FAX : 008 |
| Protection class | IP42 |
| Insulation class | F |
| Bearing | Maintenance-free ball bearings |
| Duty | S1 |
| Vibration standard | JB/T 8689 |
| Service life | 40,000Hours(L10), At 25 °Croom, humidity 15%~65%RH. Balancing According to JB/T 9101-1999 requirements G6.3 Vibration of the fan Test method accord with JB/T 8689 Installation method Horizontal or vertical installation Mate |
| 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 LWBD3G225: 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.
Product-line certificates
Scans of original documents held by Ningbo Longwell Electric Technology Co., Ltd.: the company ISO management-system certificate and the certificates whose model list covers this model. 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 certificateCE-LVD / CE-EMCVoluntary certificates of conformity issued by KTS; the covered models are listed on each certificate.
PDFCE-LVD certificate of conformity KB230605L01 · LWBD3G
PDFCE-EMC certificate of conformity KB230605E01 · LWBD3GETLIntertek Authorization to Mark, control no. 5022563; the covered model ranges are stated on the document.
PDFETL Authorization to Mark · report 230100446HAN-001 · LWAD3G / LWBD3G / LWFD3G / LWDD3GNeed a Declaration of Conformity for this model and your destination market? Ask us — we arrange additional certification on request.
How to order LWBD3G225-092NM-04
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 (Ø225 mm · DC)
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 | |
|---|---|---|---|---|---|---|---|
| LWBD3G225-092NM-04 this model | 1,092 m³/h | 515 Pa | 2,700 rpm | 100 W | 72 dB(A) | 24 V | |
| LWBD3G225-092NH-06 | 1,030 m³/h | 515 Pa | 2,700 rpm | 100 W | 70 dB(A) | 48 V | View |
| LWBD3G225-092NH-05 | 1,092 m³/h | 515 Pa | 2,700 rpm | 100 W | 72 dB(A) | 48 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 LWBD3G225 seriesSame impeller, different speed grade or wiring
Adjacent sizesOne size up when airflow is short, one size down when it is too much
LWBA2E220-092NS-01Ø220 mm · 1,029 m³/h · 662 Pa · ACadjacent size
LWBE3G220-072NS-09Ø220 mm · 1,019.7 m³/h · 597.4 Pa · ECadjacent size
LWBE3G220-072NS-07Ø220 mm · 937.3 m³/h · 721 Pa · ECadjacent size
LWBE3G220-072NS-08Ø220 mm · 1,184.5 m³/h · 978.5 Pa · ECadjacent size
LWBA2E220-092NS-02Ø220 mm · 945 m³/h · 515 Pa · ACadjacent size
LWBA4E220-092NS-03Ø220 mm · 767 m³/h · 399 Pa · ACadjacent sizeAlternatives at a similar dutySimilar airflow, different construction or motor platform
See 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
- Commercial HVACAHU, rooftop, fan coil, air curtain
- FanGridsN+1 fan arrays for AHU retrofit
- Data center coolingCRAH, FanGrid, server rooms