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.
- ImpellerØ450 mm17.7 in
- Max airflow6,077 m³/h3,577 CFM
- Max static pressure618 Pa2.48 in. wg
- Voltage230 V
- Speed1,350 rpm
- Input power800 W1.07 hp
- Noise76 dB(A)
LWBA4E450-138NS-02 AC Backward Curved Centrifugal Fan Ø450 mm
Ø450 mm | AC | Max airflow 6,077 m³/h | Max static pressure 618 Pa | 76 dB(A)
- Factory direct
- OEM / ODM
- Samples in 1–3 days
- Production 15–30 days
- 18-month warranty
- CE · ETL · RoHS
Need a non-standard size or another format? Ask an engineer or search the download center.
LWBA4E450-138NS-02 is a LONGWELL AC Backward Curved Centrifugal Fan from the Backward Curved Centrifugal Fans range, impeller Ø450 mm, rated 230 V AC, maximum airflow 6,077 m³/h, maximum static pressure 618 Pa, noise 76 dB(A), input power 800 W. The fixed-speed AC external-rotor motor is simple, robust and cost-effective for constant-duty applications.
Technical data
| Model | LWBA4E450-138NS-02 |
|---|---|
| Series | LWBA4E450 |
| Motor type | AC |
| Phase | 1-phase |
| Rated voltage | 230 V |
| Frequency | 50 Hz |
| Current | 3.5 A |
| Input power | 800 W |
| Speed | 1,350 rpm |
| Max. airflow | 6,077 m³/h |
| Max. static pressure | 618 Pa |
| Noise | 76 dB(A) |
| Ambient temperature | -40 ~ 65 °C |
| Storage temperature | -40 ~ 80℃ |
| Humidity | 0 ~ 85 % RH |
| Altitude | < 1000m |
| Impeller diameter | Ø450 mm |
| Rotor diameter | 138 |
| Impeller material | Aluminum Alloy |
| Protection class | IP54 |
| Insulation class | F |
| Bearing | Maintenance-free ball bearings |
| Duty | S1 |
| Vibration standard | JB/T 8689 |
| Service life | 30,000Hours(L10), At 40 °Croom, humidity 15%~65%RH. Balancing According to JB/T 9101-1999 requirements G6.3 Vibration of the fan Test method accord with JB/T 8689 Installation method Horizontal or vertical installation Mate |
| Rotation | Clockwise,seen on rotor |
Typical applications
- Air handling units (AHU) and rooftop units (RTU)
- Data-center CRAH / CRAC units and fan walls
- Dust extraction and process ventilation
- Fan filter units and air purifiers
Series LWBA4E450: 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 | |
|---|---|---|---|---|---|---|---|
| LWBA4E450-138NS-02 this model | 6,077 m³/h | 618 Pa | 1,350 rpm | 800 W | 76 dB(A) | 230 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 |
| LWBA4D450-138NT-01 | 6,077 m³/h | 618 Pa | 1,350 rpm | 800 W | 76 dB(A) | 380 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
Adjacent sizesOne size up when airflow is short, one size down when it is too much
LWBA4D400-138NT-10Ø400 mm · 4,120 m³/h · 494 Pa · ACadjacent size
LWBE3G500-188NT-10Ø500 mm · 13,472 m³/h · 1,541 Pa · ECadjacent size
LWBA4D400-138NT-08Ø400 mm · 4,532 m³/h · 494 Pa · ACadjacent size
LWBA4E400-138NS-09Ø400 mm · 4,120 m³/h · 494 Pa · ACadjacent size
LWBE3G500-188NT-08Ø500 mm · 14,214 m³/h · 886 Pa · ECadjacent size
LWBA4D400-138NT-11Ø400 mm · 5,082 m³/h · 504 Pa · ACadjacent sizeAlternatives at a similar dutySimilar airflow, different construction or motor platform
LWBA4D450-138NT-01Ø450 mm · 6,077 m³/h · 618 Pa · ACsimilar dutyLWPVD-500(20")S-016,000 m³/hsimilar duty
LWBA4D450-138NT-09Ø450 mm · 6,164 m³/h · 630 Pa · ACsimilar dutyLWWAF-5A-0.25-4P-1-0016,170 m³/h · ACsimilar duty
LWAA4D420S-5MEB-04Ø420 mm · 5,974 m³/h · ACsimilar duty
LWFE3G355-102PT-10Ø355 mm · 6,180 m³/h · 1,751 Pa · ECsimilar dutySee all Backward Curved Centrifugal Fans · select by duty point