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- ImpellerØ450 mm17.7 in
- Max airflow5,459 m³/h3,213 CFM
- Voltage380 V
- Speed1,350 rpm
- Input power270 W
- Noise58 dB(A)
LWAA4D450S-5MKB-20 AC Axial Fan Ø450 mm
Ø450 mm | AC | Max airflow 5,459 m³/h | 58 dB(A)
- Factory direct
- OEM / ODM
- Samples in 1–3 days
- Production 15–30 days
- 18-month warranty
- CE · ETL · RoHS
LWAA4D450S-5MKB-20 is a LONGWELL AC Axial Fan from the AC Axial Fans range, impeller Ø450 mm, rated 380 V AC, maximum airflow 5,459 m³/h, noise 58 dB(A), input power 270 W. The fixed-speed AC external-rotor motor is simple, robust and cost-effective for constant-duty applications.
Technical data
| Model | LWAA4D450S-5MKB-20 |
|---|---|
| Series | LWAA4D450 |
| Motor type | AC |
| Phase | 3-phase |
| Rated voltage | 380 V |
| Voltage range | 342 ~ 418 V |
| Frequency | 50 Hz |
| Current | 0.81 A |
| Input power | 270 W |
| Speed | 1,350 rpm |
| Max. airflow | 5,459 m³/h |
| Noise | 58 dB(A) |
| Ambient temperature | -30 ~ +60 ℃ |
| Storage temperature | -40 ~ 80℃ |
| Humidity | 0 ~ 95 % RH |
| Altitude | < 1000m |
| Impeller diameter | Ø450 mm |
| Impeller material | Cold-rolled sheet ( Impeller ) |
| Protection class | IP54 |
| Insulation class | F |
| Bearing | Maintenance-free ball bearings |
| Duty | S1 |
| Balance grade | G6.3 |
| Vibration standard | JB/T8689 |
| Service life | 30,000Hours(L10), At normal supply voltage , 20 °Croom with full speed, humidity 15%~65%RH |
Typical applications
- Condensers, evaporators and dry coolers
- Heat-pump and chiller outdoor units
- Building and workshop ventilation
- Cooling towers and transformer cooling
Series LWAA4D450: 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 (Ø450 mm · AC)
Same impeller, different speed grade, power or wiring. Step up for more airflow, step down for lower noise.
| Model | Max airflow | Max static pressure | Speed | Power | Noise | Voltage | |
|---|---|---|---|---|---|---|---|
| LWAA4D450S-5MKB-20 this model | 5,459 m³/h | see curve | 1,350 rpm | 270 W | 58 dB(A) | 380 V | |
| LWBA6D450-138NT-07 | 4,017 m³/h | 309 Pa | 920 rpm | 300 W | 60 dB(A) | 380 V | View |
| LWBA6E450-138NS-05 | 4,017 m³/h | 309 Pa | 930 rpm | 260 W | 60 dB(A) | 230 V | View |
| LWBA4D450-138NT-08 | 4,450 m³/h | 381 Pa | 1,050 rpm | 360 W | 61 dB(A) | 380 V | View |
| LWBA6E450-138NS-06 | 4,450 m³/h | 381 Pa | 1,050 rpm | 350 W | 61 dB(A) | 230 V | View |
| LWBA4E450-138NS-02 | 6,077 m³/h | 618 Pa | 1,350 rpm | 800 W | 76 dB(A) | 230 V | View |
| LWBA4D450-138NT-09 | 6,164 m³/h | 630 Pa | 1,395 rpm | 616 W | 78.8 dB(A) | 380 V | View |
| LWFA-E-450-01 | 6,230 m³/h | 710 Pa | — | — | 72 dB(A) | — | View |
| LWEA450S(T)M-163E | 6,658 m³/h | 150 Pa | 1,450 rpm | 550 W | — | 220 V | View |
| LWBA4D450-188NT-03 | 6,695 m³/h | 618 Pa | 1,350 rpm | 800 W | 79 dB(A) | 380 V | View |
| LWBA4D450-188NT-04 | 7,210 m³/h | 695 Pa | 1,400 rpm | 1,100 W | 82 dB(A) | 380 V | View |
| LWFA8D450-188NT-02 | 7,416 m³/h | 370.8 Pa | 680 rpm | 2,000 W | 68 dB(A) | 380 V | View |
| LWFA6D450-188NT-01 | 7,725 m³/h | 638.6 Pa | 930 rpm | 3,500 W | 74 dB(A) | 380 V | View |
| LWFA-E-450-02 | 10,500 m³/h | 750 Pa | — | — | 80 dB(A) | — | View |
| LWA-450(18")U(S)M-01 | 12,500 m³/h | 580 Pa | 2,800 rpm | 1,500 W | — | 110-120 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
Other models in the LWAA4D450 seriesSame impeller, different speed grade or wiring
LWAA4D450S-5MEB-03Ø450 mm · 4,635 m³/h · ACsame series
LWAA4D450S-5MEB-04Ø450 mm · 4,944 m³/h · ACsame series
LWAA4D450S-5MEB-10Ø450 mm · 7,004 m³/h · ACsame series
LWAA4D450S-5MEB-12Ø450 mm · 5,768 m³/h · ACsame series
LWAA4D450S-5MEB-16Ø450 mm · 5,150 m³/h · ACsame series
LWAA4D450S-5MEB-17Ø450 mm · 7,725 m³/h · ACsame seriesAdjacent sizesOne size up when airflow is short, one size down when it is too much
LWAA4D420S-5MEB-03Ø420 mm · 5,459 m³/h · ACadjacent size
LWAA4E420S-5MEB-02Ø420 mm · 5,974 m³/h · ACadjacent size
LWAA4D420S-5MEB-04Ø420 mm · 5,974 m³/h · ACadjacent size
LWAA4E420S-5MEB-01Ø420 mm · 5,459 m³/h · ACadjacent size
LWA-500S(T)M-03EØ490 mm · 6,800 m³/h · 185 Pa · ACadjacent size
LWAE3G400SS-5MEW-03Ø400 mm · 4,944 m³/h · 208 Pa · ECadjacent sizeAlternatives at a similar dutySimilar airflow, different construction or motor platform
See all AC Axial Fans · select by duty point