Find by model
No model number? Select by duty point →
LWBA4E250-092NS-18 product photo
  • ImpellerØ250 mm9.8 in
  • Max airflow1,004 m³/h591 CFM
  • Max static pressure221 Pa0.89 in. wg
  • Voltage230 V
  • Speed1,600 rpm
  • Input power60 W
  • Noise70 dB(A)

LWBA4E250-092NS-18 AC Backward Curved Centrifugal Fan Ø250 mm

Ø250 mm | AC | Max airflow 1,004 m³/h | Max static pressure 221 Pa | 70 dB(A)

SKU: LWBA4E250-092NS-18 Categories: , ,
  • Factory direct
  • OEM / ODM
  • Samples in 1–3 days
  • Production 15–30 days
  • 18-month warranty
  • CE · ETL · RoHS
View RFQ →

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.

Dimensional drawingDimensions in mm. Confirm against the final approval drawing before machining cut-outs.
LWBA4E250-092NS-18 Dimensional drawing

Downloads for LWBA4E250-092NS-18

PDFDatasheet · 1.7 MB

Need a non-standard size or another format? Ask an engineer or search the download center.

LWBA4E250-092NS-18 is a LONGWELL AC Backward Curved Centrifugal Fan from the Backward Curved Centrifugal Fans range, impeller Ø250 mm, rated 230 V AC, maximum airflow 1,004 m³/h, maximum static pressure 221 Pa, noise 70 dB(A), input power 60 W. The fixed-speed AC external-rotor motor is simple, robust and cost-effective for constant-duty applications.

Technical data

Model LWBA4E250-092NS-18
Series LWBA4E250
Motor type AC
Phase 1-phase
Rated voltage 230 V
Frequency 60 Hz
Current 0.27 A
Input power 60 W
Speed 1,600 rpm
Max. airflow 1,004 m³/h
Max. static pressure 221 Pa
Noise 70 dB(A)
Ambient temperature -40 ~ 65 °C
Impeller diameter Ø250 mm
Rotor diameter 92
Impeller material Galvanised sheet steel
Protection class IP44
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 LWBA4E250: 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 (Ø250 mm · AC)

Same impeller, different speed grade, power or wiring. Step up for more airflow, step down for lower noise.

ModelMax airflowMax static pressureSpeedPowerNoiseVoltage
LWBA4E250-092NS-18 this model 1,004 m³/h221 Pa 1,600 rpm60 W70 dB(A)230 V
LWA-250(10")U(S)M-01 28 m³/hsee curve 1,350 rpm80 W—110-120 V View
LWA-250(10")U(S)M-02 48 m³/hsee curve 2,800 rpm230 W—110-120 V View
LWDA-250S-MBN-10 1,034 m³/h515 Pa 2,615 rpm165 W71 dB(A)230 V View
LWDA-250 (10")U-MWN-01 1,219 m³/hsee curve 3,000 rpm228 W69 dB(A)110-120 V View
LWDA-250 (10")U-MWN-03 1,219 m³/hsee curve 3,000 rpm228 W62 dB(A)110-120 V View
LWDA-250(8'')S-PWN-05 1,600 m³/h420 Pa 2,500 rpm175 W50 dB(A)230 V View
LWFA6E250-102NS-04 1,751 m³/h164.8 Pa 900 rpm320 W62 dB(A)220 V View
LWFA6D250-102NT-03 1,751 m³/h164.8 Pa 910 rpm320 W62 dB(A)380 V View
LWDA-250 (10")S-MWN-02 1,900 m³/hsee curve 2,750 rpm162 W68 dB(A)220-240 V View
LWDA-250 (10")S-MWN-04 1,900 m³/hsee curve 2,750 rpm162 W60 dB(A)220-240 V View
LWFA-E-250-02 2,100 m³/h215 Pa ——64 dB(A)— View
LWA-250(10")U(S)M-03 2,100 m³/h215 Pa 2,800 rpm250 W—110-120 V View
LWDA-250(10")S-MWN-06 2,100 m³/h215 Pa 2,800 rpm100 W65 dB(A)220 V View
LWFA-E-250-01 2,500 m³/h380 Pa ——70 dB(A)— 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 LWBA4E250 seriesSame impeller, different speed grade or wiring

LWBA4E250-092NS-01 product photoLWBA4E250-092NS-01Ø250 mm · 700 m³/h · 180 Pa · ACsame seriesLWBA4E250-092NS-02 product photoLWBA4E250-092NS-02Ø250 mm · 824 m³/h · 227 Pa · ACsame seriesLWBA4E250-092NS-17 product photoLWBA4E250-092NS-17Ø250 mm · 855 m³/h · 165 Pa · ACsame series

Adjacent sizesOne size up when airflow is short, one size down when it is too much

LWBE3G270-092NS-02 product photoLWBE3G270-092NS-02Ø270 mm · 1,545 m³/h · 332 Pa · ECadjacent sizeLWBE3G270-092NU-01 product photoLWBE3G270-092NU-01Ø270 mm · 1,545 m³/h · 332 Pa · ECadjacent sizeLWBA2E225-092NS-01 product photoLWBA2E225-092NS-01Ø225 mm · 618 m³/h · 165 Pa · ACadjacent sizeLWFA4D225-138ST-02 product photoLWFA4D225-138ST-02Ø225 mm · 1,442 m³/h · 288.4 Pa · ACadjacent sizeLWBA4E225-092NS-02 product photoLWBA4E225-092NS-02Ø225 mm · 690 m³/h · 216 Pa · ACadjacent sizeLWFA4D225-138NT-01 product photoLWFA4D225-138NT-01Ø225 mm · 1,648 m³/h · 288.4 Pa · ACadjacent size

Alternatives at a similar dutySimilar airflow, different construction or motor platform

LWBA4D250-092NT-20 product photoLWBA4D250-092NT-20Ø250 mm · 1,004 m³/h · 221 Pa · ACsimilar dutyLONGWELL product videoLWCA-90680SN-06Ø90 mm · 1,000 m³/h · 97 Pa · ACsimilar dutyLWCA-120380SN-06 product photoLWCA-120380SN-06Ø120 mm · 1,000 m³/h · 68 Pa · ACsimilar dutyLWCD-80720MN-06 product photoLWCD-80720MN-06Ø80 mm · 1,000 m³/h · 82 Pa · DCsimilar dutyLONGWELL product videoLWDA-180(7")S-MWN-01Ø180 mm · 1,000 m³/h · 90 Pa · ACsimilar dutyLWFA-E-200-01 product photoLWFA-E-200-01Ø200 mm · 1,000 m³/h · 305 Pa · ACsimilar duty

See all Backward Curved Centrifugal Fans  ·  select by duty point

Scroll to Top
RFQ list