Description
LWAA4E250B-5MEW-23 at a glance
The LONGWELL LWAA4E250B-5MEW-23 is a Ø250 mm AC axial fan with an external-rotor motor delivering up to 989 m³/h, 1450 rpm. Axial fans move large air volumes against low resistance, which makes them the standard choice wherever a heat exchanger, condenser or enclosure has to be cooled rather than ducted.
Every figure in the tables below is the catalogue rating for this exact model — impeller diameter, blade count, guard type, air direction and connection style are all fixed by the type code, so what you order is what you get. The performance curve and dimensional drawing further down are model-specific too.
Type code — LWAA4E250B-5MEW-23
| LW | LONGWELL |
| A | Axial fan |
| A | AC motor |
| 4E | 4-pole, single-phase |
| 250 | Impeller diameter Ø250 mm |
| B | Blowing (air blown over the motor) |
| 5 | 5 blades |
| M | Metal impeller |
| E | Standard finger guard |
| W | Lead wires |
| 23 | Series number |
Decoded per the LONGWELL axial fan type code (catalogue, 风机命名规则 / Type Code).
Technical Description
| Impeller Material | Cold rolled steel |
| Number of Blades | 5 |
| Air Direction | Blowing |
| Mode of Operation | S1 |
| Type of Protection | IP44 |
| Insulation Class | F |
| Bearing | Maintenance-free ball bearings |
Nominal data
| Type of Voltage | AC |
| Impeller Diameter | 250mm |
| Nominal Voltage | 220V |
| Current | 0.23A |
| Frequency | 50Hz |
| Power Input | 58W |
| Speed | 1450RPM |
| Air Flow(Max) | 989m³/h |
| Noise | / |
| Min.ambient Temp | -30℃ |
| Max.ambient Temp | 60℃ |
Curves
Drawing
Download
AC Axial Fan Catalogue (Ø145–Ø900) (PDF) — full series specifications, performance curves and dimensional drawings.
Need a datasheet, STEP file or a quotation for LWAA4E250B-5MEW-23? Tell us your duty point and our engineers reply within one working day.
Typical applications
Air handling units (AHU) · condensers and evaporators · heat pumps · dry-type transformer cooling · refrigeration and cold rooms · telecom and power cabinets · ventilation of workshops and warehouses · agricultural and livestock housing.
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