Representative image of the series — dimensions and configuration of this model are given in the drawing and data table below.
- ImpellerØ250 mm9.8 in
- Max airflow1,034 m³/h615 CFM
- Max static pressure515 Pa2.07 in. wg
- Voltage230 V
- Speed2,615 rpm
- Input power165 W
- Noise71 dB(A)
LWDA-250S-MBN-10 AC Metal Inline Duct Fan Ø250 mm
Ø250 mm | AC | Max airflow 1,034 m³/h | Max static pressure 515 Pa | 71 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) LWDA-250S-MBN-10
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 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.
Video LWDA-250S-MBN-10
LWDA-250S-MBN-10 — construction, airflow path and running condition.
LWDA-250 Fan Test | LWDA-250(10″)S-MWN-06 · open in video library
Drawing & Curve LWDA-250S-MBN-10
Files for LWDA-250S-MBN-10: datasheet, catalogue and drawing PDFs are listed above ↑ · CAD (STEP / DWG) on request — ask an engineer.
Technical description LWDA-250S-MBN-10
LWDA-250S-MBN-10 is a LONGWELL AC Metal Inline Duct Fan from the Metal Inline Duct Fans range, impeller Ø250 mm, rated 230 V AC, maximum airflow 1,034 m³/h, maximum static pressure 515 Pa, noise 71 dB(A), input power 165 W. The fixed-speed AC external-rotor motor is simple, robust and cost-effective for constant-duty applications.
Technical data
| Model | LWDA-250S-MBN-10 |
|---|---|
| Series | LWDA250 |
| Motor type | AC |
| Phase | 1-phase |
| Rated voltage | 230 V |
| Frequency | 50 Hz |
| Input power | 165 W |
| Speed | 2,615 rpm |
| Max. airflow | 1,034 m³/h |
| Max. airflow (CFM) | 615 CFM |
| Max. static pressure | 515 Pa |
| Noise | 71 dB(A) |
| Ambient temperature | -25 ~ + 60 °C |
| Storage temperature | -25 ~ 60℃ |
| Humidity | 15 ~ 85% RH |
| Altitude | < 1000m |
| Impeller diameter | Ø250 mm |
| Inlet diameter | 250mm |
| Impeller material | PA6+GF ( Impeller ) NGWELL NGWELL NGWELL LONGWE LONGWE LONGWE Version number : A0 NINGBO LONGWELL ELECTRIC TECHNOLOGY CO.,LTD . Phone: 0086 574 6218 9863 FAX : 0086 574 6218 9863 www.longwellfans.com sales@zjlongwell.com |
| Balance grade | G6.3 |
| Vibration standard | JB/T 8689 |
| Service life | 40,000Hours(L10), At 25 °Croom, humidity 15%~65%RH |
Typical applications
- Residential and commercial fresh-air systems
- Kitchen and bathroom exhaust
- Local pressurisation and booster duty
- Hotel and office ventilation
Series LWDA250: 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 LWDA-250S-MBN-10
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 (Ø250 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 | |
|---|---|---|---|---|---|---|---|
| LWDA-250S-MBN-10 this model | 1,034 m³/h | 515 Pa | 2,615 rpm | 165 W | 71 dB(A) | 230 V | |
| LWDA-250 (10")U-MWN-01 | 1,219 m³/h | see curve | 3,000 rpm | 228 W | 69 dB(A) | 110-120 V | View |
| LWDA-250 (10")U-MWN-03 | 1,219 m³/h | see curve | 3,000 rpm | 228 W | 62 dB(A) | 110-120 V | View |
| LWDA-250(8'')S-PWN-05 | 1,600 m³/h | 420 Pa | 2,500 rpm | 175 W | 50 dB(A) | 230 V | View |
| LWDA-250 (10")S-MWN-02 | 1,900 m³/h | see curve | 2,750 rpm | 162 W | 68 dB(A) | 220-240 V | View |
| LWDA-250 (10")S-MWN-04 | 1,900 m³/h | see curve | 2,750 rpm | 162 W | 60 dB(A) | 220-240 V | View |
| LWDA-250(10")S-MWN-06 | 2,100 m³/h | 215 Pa | 2,800 rpm | 100 W | 65 dB(A) | 220 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 LWDA250 seriesSame impeller, different speed grade or wiring
LWDA-250 (10")U-MWN-03Ø250 mm · 1,219 m³/h · ACsame series
LWDA-250 (10")S-MWN-04Ø250 mm · 1,900 m³/h · ACsame series
LWDA-250 (10")U-MWN-01Ø250 mm · 1,219 m³/h · ACsame series
LWDA-250 (10")S-MWN-02Ø250 mm · 1,900 m³/h · ACsame series
LWDA-250(8'')S-PWN-05Ø250 mm · 1,600 m³/h · 420 Pa · ACsame series
LWDA-250(10")S-MWN-06Ø250 mm · 2,100 m³/h · 215 Pa · ACsame seriesAdjacent sizesOne size up when airflow is short, one size down when it is too much
LWDE-200 (8")S-MWN-04Ø200 mm · 1,310 m³/h · ECadjacent size
LWDE-200 (8")S-MWN-02Ø200 mm · 1,310 m³/h · ECadjacent size
LWDE-300 (12")U-MWN-01Ø300 mm · 1,763 m³/h · ECadjacent sizeLWDE-300 (12")S-MWN-02Ø300 mm · 3,500 m³/h · ECadjacent size
LWDA-200(8")S-PWN-09Ø200 mm · 910 m³/h · 384 Pa · ACadjacent size
LWDA-300 (12")S-MWN-04Ø300 mm · 3,150 m³/h · ACadjacent sizeAlternatives at a similar dutySimilar airflow, different construction or motor platform
LWBA6E315-102NS-07Ø315 mm · 1,030 m³/h · 155 Pa · ACsimilar duty
LWBD3G220-092NM-04Ø220 mm · 1,030 m³/h · 577 Pa · DCsimilar duty
LWBD3G220-092NH-05Ø220 mm · 1,030 m³/h · 577 Pa · DCsimilar duty
LWBD3G225-092NH-06Ø225 mm · 1,030 m³/h · 515 Pa · DCsimilar duty
LWBA2E220-092NS-01Ø220 mm · 1,029 m³/h · 662 Pa · ACsimilar duty
LWFC-1020KM1,020 m³/h · ACsimilar dutySee all Impeller Ø160–315 mm · select by duty point
Go deeper on longwellfans.com
Application guides, project stories and engineering calculators for inline duct fans — on our main site.
Solutions
- Residential ventilationERV / HRV, bathroom and duct fans
- Commercial HVACAHU, rooftop, fan coil, air curtain