Description
LWAA4D550S-5MEW-09 at a glance
The LONGWELL LWAA4D550S-5MEW-09 is a Ø550 mm AC axial fan with an external-rotor motor delivering up to 9116 m³/h, 1350 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 — LWAA4D550S-5MEW-09
| LW | LONGWELL |
| A | Axial fan |
| A | AC motor |
| 4D | 4-pole, code D per catalogue |
| 550 | Impeller diameter Ø550 mm |
| S | Suction (air drawn over the motor) |
| 5 | 5 blades |
| M | Metal impeller |
| E | Standard finger guard |
| W | Lead wires |
| 09 | 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 | Suction |
| Mode of Operation | S1 |
| Type of Protection | IP55 |
| Insulation Class | F |
| Bearing | Maintenance-free ball bearings |
Nominal data
| Type of Voltage | AC |
| Impeller Diameter | 550mm |
| Nominal Voltage | 380V |
| Current | 1.5A |
| Frequency | 50Hz |
| Power Input | 650W |
| Speed | 1350RPM |
| Air Flow(Max) | 9116m³/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 LWAA4D550S-5MEW-09? 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.
The Company Longwell Leading Fan and Motor Innovator Worldwide
As a leading supplier of ventilation and drive technology, LONGWELL is a highly respected engineering partner in many industries. With over than 20,000 different products, we provide the right solution for every need. And we have always worked according to the highest economic and ecological standards.
As part of the logical next step in the development of our high-efficiency BLEC MOTOR technology, we believe that industrial digitalization offers the best prospects for our customers in the future. LONGWELL already offers intelligently interconnected complete solutions that are second to none worldwide and ensure that our customers always remain that decisive step ahead.
LONGWELL Product Line
LONGWELL Certificate
Trusted by top Brands
Reviews
There are no reviews yet.