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LWFA-E-250-01 product photo
LWFA-E-250-01 product photo
LWFA-E-250-01 product photo
  • ImpellerØ250 mm9.8 in
  • Max airflow2,500 m³/h1,471 CFM
  • Max static pressure380 Pa1.53 in. wg
  • Noise70 dB(A)

LWFA-E-250-01 LWFA Series Direct Drive Centrifugal Blower Ø250 mm

Ø250 mm | AC | Max airflow 2,500 m³/h | Max static pressure 380 Pa | 70 dB(A)

SKU: LWFA-E-250-01 Categories: ,
  • Factory direct
  • OEM / ODM
  • Samples in 1–3 days
  • Production 15–30 days
  • 18-month warranty
  • CE · ETL · RoHS
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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.
LWFA-E-250-01 Dimensional drawing
Performance curve (P-Q)Static pressure vs. airflow. Curve numbers correspond to supply voltage / speed grades.
LWFA-E-250-01 Performance curve (P-Q)
Wiring diagramLead colours and terminal assignment; TK = motor thermal contact.
LWFA-E-250-01 Wiring diagram

Downloads for LWFA-E-250-01

PDFDatasheet · 959 KB

Series catalogue

PDFLWFA LWFA Series Direct Driven centrifugal blower · 1.4 MB

Covers the whole series, not only this model.

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

LWFA-E-250-01 is a LONGWELL LWFA Series Direct Drive Centrifugal Blower from the Impeller Ø178–254 mm range, impeller Ø250 mm, maximum airflow 2,500 m³/h, maximum static pressure 380 Pa, noise 70 dB(A). The fixed-speed AC external-rotor motor is simple, robust and cost-effective for constant-duty applications.

Technical data

Model LWFA-E-250-01
Motor type AC
Max. airflow 2,500 m³/h
Max. static pressure 380 Pa
Noise 70 dB(A)
Storage temperature -40 ~ 80℃
Humidity 0 ~ 90 % RH
Altitude < 1000m
Impeller diameter Ø250 mm
Blade diameter 250mm
Impeller material Galvanized sheet ( Impeller )
Balance grade G6.3
Vibration standard JB/T 8689
Service life 30,000Hours(L10), At 40 °Croom, humidity 15%~65%RH

Typical applications

  • Commercial kitchen extraction
  • Ventilation units and AHUs
  • Process and fume extraction

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
LWFA-E-250-01 this model 2,500 m³/h380 Pa ——70 dB(A)—
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
LWFA4E250-138NS-02 2,575 m³/h401.7 Pa 1,330 rpm900 W72 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.

Related products

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

LWDD10-10-EC product photoLWDD10-10-ECØ254 mm · 2,923 m³/h · 608 Pa · ECadjacent sizeLWDD10-8-EC product photoLWDD10-8-ECØ254 mm · 785 m³/h · 528 Pa · ECadjacent sizeLWDD9-9-EC product photoLWDD9-9-ECØ229 mm · 139 m³/h · 587 Pa · ECadjacent sizeLWDD9-7-EC product photoLWDD9-7-ECØ229 mm · 363 m³/h · 486 Pa · ECadjacent sizeLWFA-E-225-01 product photoLWFA-E-225-01Ø225 mm · 2,300 m³/h · 325 Pa · ACadjacent sizeLWFA-E-280-02 product photoLWFA-E-280-02Ø280 mm · 2,100 m³/h · 220 Pa · ACadjacent size

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

LWCA-150700SN-06 product photoLWCA-150700SN-06Ø150 mm · 2,500 m³/h · 85 Pa · ACsimilar dutyImpeller Ø60–150 mmLWCD-150700MN-06Ø150 mm · 2,500 m³/h · 83 Pa · DCsimilar dutyLWDA-400 (16")U-MWN-03 product photoLWDA-400 (16")U-MWN-03Ø400 mm · 2,500 m³/h · ACsimilar dutyLWDA-400 (16")U-MWN-01 product photoLWDA-400 (16")U-MWN-01Ø400 mm · 2,500 m³/h · ACsimilar dutyLWDA-315(12.6'')S-PWN-05 product photoLWDA-315(12.6'')S-PWN-05Ø315 mm · 2,500 m³/h · 450 Pa · ACsimilar dutyLONGWELL LW-G355TLW-G200T2,500 m³/hsimilar duty

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