AC Axial Fans
AC external-rotor axial fans for fixed-speed duties where speed control is not required and first cost matters. Single- and three-phase voltages, Ø145–800 mm, metal or plastic impellers, guard / plate / wall-ring mounting options. Final selection is confirmed at the duty point (airflow / static pressure / voltage / control mode) and by project verification.
Browse by size
Browse by series
| Model | Size | Max airflowm³/h | Max static pressurePa | PowerW | NoisedB(A) | Speedrpm | VoltageV | ||
|---|---|---|---|---|---|---|---|---|---|
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LWAA2D145S-5MNW-01AC | Ø145 mm | 268 | see curve | 50 | 46 | 2,800 | 380 | Details |
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LWAA2D145S-5MNW-02AC | Ø145 mm | 309 | see curve | 35 | 49 | 3,200 | 380 | Details |
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LWAA2D165S-5MNW-01AC | Ø165 mm | 278 | see curve | 50 | 47 | 2,800 | 380 | Details |
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LWAA2D165S-5MNW-02AC | Ø165 mm | 330 | see curve | 35 | 50 | 3,200 | 380 | Details |
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LWAA2D185S-7MNW-03AC | Ø185 mm | 670 | see curve | 55 | 51 | 2,400 | 380 | Details |
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LWAA2D185S-7MNW-04AC | Ø185 mm | 742 | see curve | 75 | 52 | 2,700 | 380 | Details |
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LWAA2D200S-7MEB-05AC | Ø200 mm | 906 | see curve | 65 | 53 | 2,300 | 380 | Details |
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LWAA2D200S-7MEB-06AC | Ø200 mm | 1,009 | see curve | 70 | 55 | 2,400 | 380 | Details |
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LWAA2D200S-7MKW-09AC | Ø200 mm | 906 | see curve | 65 | 58 | 2,300 | 380/400 | Details |
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LWAA2D200S-7MKW-10AC | Ø200 mm | 1,009 | see curve | 70 | 60 | 2,400 | 380/400 | Details |
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LWAA2D200S-7MNW-01AC | Ø200 mm | 906 | see curve | 65 | 53 | 2,300 | 380 | Details |
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LWAA2D200S-7MNW-02AC | Ø200 mm | 1,009 | see curve | 80 | 55 | 2,600 | 380 | Details |
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LWAA2D230S-5MNW-01AC | Ø230 mm | 1,288 | see curve | 90 | 59 | 2,700 | 380 | Details |
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LWAA2D230S-5MNW-02AC | Ø230 mm | 1,391 | see curve | 120 | 61 | 2,950 | 380 | Details |
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LWAA2D250S-5MEB-03AC | Ø250 mm | 1,648 | see curve | 100 | 65 | 2,500 | 380 | Details |
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LWAA2D250S-5MEB-04AC | Ø250 mm | 1,648 | see curve | 100 | 65 | 2,500 | 380 | Details |
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LWAA2D250S-5MKW-11AC | Ø250 mm | 1,648 | see curve | 100 | 66 | 2,500 | 380 | Details |
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LWAA2D250S-5MKW-12AC | Ø250 mm | 1,854 | see curve | 130 | 67 | 2,600 | 380 | Details |
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LWAA2D300S-5MBW-05AC | Ø300 mm | 3,090 | see curve | 270 | 72 | 2,750 | 380 | Details |
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LWAA2D300S-5MBW-06AC | Ø300 mm | 3,296 | see curve | 400 | 73 | 3,100 | 380 | Details |
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LWAA2D300S-5MEW-05AC | Ø300 mm | 3,090 | see curve | 270 | 72 | 2,750 | 380/400 | Details |
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LWAA2D300S-5MEW-06AC | Ø300 mm | 3,296 | see curve | 400 | 73 | 3,100 | 380/400 | Details |
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LWAA2E185S-7MNW-01AC | Ø185 mm | 670 | see curve | 55 | 51 | 2,400 | 220/230 | Details |
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LWAA2E185S-7MNW-02AC | Ø185 mm | 742 | see curve | 75 | 52 | 2,700 | 220/230 | Details |
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LWAA2E200S-7MEB-03AC | Ø200 mm | 906 | see curve | 65 | 53 | 2,300 | 380/400 | Details |
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LWAA2E200S-7MEB-04AC | Ø200 mm | 1,009 | see curve | 80 | 55 | 2,600 | 230 | Details |
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LWAA2E200S-7MKW-07AC | Ø200 mm | 906 | see curve | 60 | 58 | 2,250 | 230 | Details |
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LWAA2E200S-7MKW-08AC | Ø200 mm | 1,009 | see curve | 75 | 60 | 2,800 | 230 | Details |
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LWAA2E250S-5MEB-01AC | Ø250 mm | 1,648 | 84 | 110 | 65 | 2,500 | 220/230 | Details |
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LWAA2E250S-5MEB-02AC | Ø250 mm | 1,545 | see curve | 130 | 65 | 2,600 | 220/230 | Details |
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LWAA2E250S-5MEW-22AC | Ø250 mm | 1,627 | see curve | 100 | — | 2,550 | 220 | Details |
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LWAA2E250S-5MKW-09AC | Ø250 mm | 1,648 | see curve | 90 | 66 | 2,600 | 220/230 | Details |
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LWAA2E250S-5MKW-10AC | Ø250 mm | 1,854 | see curve | 115 | 67 | 2,900 | 220/230 | Details |
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LWAA2E250S-7MEB-15AC | Ø250 mm | 2,060 | see curve | 130 | 67 | 2,700 | 220/230 | Details |
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LWAA2E250S-7MEB-16AC | Ø250 mm | 2,318 | see curve | 170 | 69 | 2,900 | 220/230 | Details |
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LWAA2E250S-7MEW-15AC | Ø250 mm | 2,060 | see curve | 130 | 67 | 2,700 | 230 | Details |
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LWAA2E250S-7MEW-16AC | Ø250 mm | 2,060 | see curve | 130 | 69 | 2,700 | 230 | Details |
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LWAA2E300S-5MBW-07AC | Ø300 mm | 3,090 | see curve | 270 | 72 | 2,750 | 230 | Details |
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LWAA2E300S-5MBW-08AC | Ø300 mm | 3,502 | see curve | 400 | 73 | 3,000 | 230 | Details |
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LWAA2E300S-5MEW-07AC | Ø300 mm | 3,090 | 391 | 270 | 72 | 2,750 | 220 | Details |
AC Axial Fans — selection guide
AC Axial Fans: 203 models, impellers Ø145–910 mm, maximum airflow 268–31,106 m³/h, static pressure to 391 Pa, AC motors, across 54 series. 1 of them carry a measured P-Q curve and 201 a dimensional drawing.
LWAA AC axial fans are external-rotor fans for fixed-speed duties from Ø145 to Ø910 mm. The code tells the configuration: LWAA4E400S-5MEW is a 4-pole single-phase (E; D = three-phase) Ø400 mm fan. Pole count sets the speed and therefore the pressure and noise: 2-pole for the small Ø145–250 mm sizes, 4-pole for Ø250–550 mm, 6- and 8-pole for the large Ø600–910 mm fans. Supply is 220 / 230 V single-phase or 380 / 400 V three-phase, with 60 Hz and 480 V variants on some sizes.
Most models are IP54, rated −30 to +60 °C, with cold-rolled-steel impellers and maintenance-free ball bearings. Because no electronics are involved, these are the fans specified where the duty is constant and first cost decides — condensers, dry coolers and simple ventilation.
How to select from this range
- Pick the diameter for airflow and the pole count for pressure: at the same Ø450 mm a 4-pole fan delivers roughly twice the airflow of a 6-pole fan at about 6 dB(A) more noise.
- Choose single-phase (E) for equipment sold to end users and three-phase (D) for plant with a 380 / 400 V supply.
- Use the coil pressure drop, not free-air airflow, when reading the curve.
- Voltage-controllable versions allow simple step control; for continuous modulation move to the EC line on the same mounting dimensions.
Where these fans are used
- Condensers and dry coolers
- Cold-room evaporators
- Heat-pump outdoor units
- Wall and roof ventilation
Every figure above is measured on our own test rigs per AMCA 210 / ISO 5801 methods — see the test labs and certificates. Final selection is confirmed at the duty point and by project validation.
FAQ — AC Axial Fans
What is the difference between E and D in the LWAA code?
E is single-phase 220 / 230 V, D is three-phase 380 / 400 V. Both use the same impeller and mounting, so a unit can be offered in either supply without re-tooling.
Which LWAA sizes have the most variants?
Ø400 and Ø450 mm (LWAA4E400 / 4D400 / 4E450 / 4D450) with 9–13 versions each, followed by Ø250 and Ø350 mm — these are the condenser and heat-pump sizes that ship fastest.
Can AC axial fans be speed-controlled?
Voltage control (transformer or triac) works on many single-phase sizes with reduced airflow; for proportional control, feedback and part-load efficiency use the LWAE3G EC fan of the same diameter.