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.
- ImpellerØ400 mm15.7 in
- Max airflow4,532 m³/h2,698 CFM
- Max static pressure494 Pa1.98 in. wg
- Voltage230 V
- Speed1,380 rpm
- Input power550 W
- Noise69 dB(A)
LWBA4E400-138NS-07 AC Backward Curved Centrifugal Fan Ø400 mm
Ø400 mm | AC | Max airflow 4,532 m³/h | Max static pressure 494 Pa | 69 dB(A)
- Factory direct
- OEM / ODM
- Samples in 1–3 days
- Production 15–30 days
- 18-month warranty
- CE · RoHS · ETL on request
Downloads for LWBA4E400-138NS-07
PDFDatasheetNeed a non-standard size or another format? Ask an engineer or search the download center.
LWBA4E400-138NS-07 is a LONGWELL AC Backward Curved Centrifugal Fan from the Backward Curved Centrifugal Fans range, impeller Ø400 mm, rated 230 V AC, maximum airflow 4,532 m³/h, maximum static pressure 494 Pa, noise 69 dB(A), input power 550 W. The fixed-speed AC external-rotor motor is simple, robust and cost-effective for constant-duty applications.
Technical data
| Model | LWBA4E400-138NS-07 |
|---|---|
| Series | LWBA4E400 |
| Motor type | AC |
| Phase | 1-phase |
| Rated voltage | 230 V |
| Frequency | 50 Hz |
| Current | 2.5 A |
| Input power | 550 W |
| Speed | 1,380 rpm |
| Max. airflow | 4,532 m³/h |
| Max. airflow (CFM) | 2,698 CFM |
| Max. static pressure | 494 Pa |
| Noise | 69 dB(A) |
| Ambient temperature | -40 ~ 69 °C |
| Storage temperature | -25 ~ 70℃ |
| Humidity | 0 ~ 85 % RH |
| Altitude | < 1000m |
| Impeller diameter | Ø400 mm |
| Rotor diameter | 138 |
| Impeller material | Aluminum Alloy ( Impeller ) |
| Protection class | IP54 |
| Insulation class | F |
| Bearing | Maintenance-free ball bearings |
| Duty | S1 |
| Balance grade | G6.3 |
| Vibration standard | JB/T 8689 |
| Service life | 40,000Hours(L10), At 40 °Croom, humidity 15%~65%RH |
| 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 LWBA4E400: 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 (Ø400 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 | |
|---|---|---|---|---|---|---|---|
| LWBA4E400-138NS-07 this model | 4,532 m³/h | 494 Pa | 1,380 rpm | 550 W | 69 dB(A) | 230 V | |
| LWBA6E400-102NS-05 | 2,163 m³/h | 216 Pa | 940 rpm | 135 W | 56 dB(A) | 230 V | View |
| LWBA6E400-102NS-06 | 2,421 m³/h | 278 Pa | 1,050 rpm | 155 W | 57 dB(A) | 230 V | View |
| LWBA4D400-102NT-03 | 2,936 m³/h | 464 Pa | 1,380 rpm | 265 W | 64 dB(A) | 380 V | View |
| LWBA4E400-102NS-01 | 2,936 m³/h | 464 Pa | 1,350 rpm | 260 W | 64 dB(A) | 230 V | View |
| LWBA4D400-102NT-04 | 3,090 m³/h | 515 Pa | 1,460 rpm | 320 W | 68 dB(A) | 380 V | View |
| LWBA4E400-102NS-02 | 3,090 m³/h | 515 Pa | 1,450 rpm | 330 W | 68 dB(A) | 230 V | View |
| LWBA4D400-138NT-10 | 4,120 m³/h | 494 Pa | 1,380 rpm | 440 W | 66 dB(A) | 380 V | View |
| LWBA4E400-138NS-09 | 4,120 m³/h | 494 Pa | 1,380 rpm | 430 W | 66 dB(A) | 230 V | View |
| LWBA4D400-138NT-08 | 4,532 m³/h | 494 Pa | 1,370 rpm | 550 W | 69 dB(A) | 380 V | View |
| LWBA4D400-138NT-11 | 5,082 m³/h | 504 Pa | 1,400 rpm | 484 W | 72 dB(A) | 380 V | View |
| LWFA8D400-188NT-03 | 5,974 m³/h | 345.05 Pa | 700 rpm | 1,700 W | 65 dB(A) | 380 V | View |
| LWFA4D400-188NT-01 | 6,695 m³/h | 1,030 Pa | 1,400 rpm | 4,800 W | 82 dB(A) | 380 V | View |
| LWFA6D400-188NT-02 | 7,313 m³/h | 540.75 Pa | 870 rpm | 2,800 W | 74 dB(A) | 380 V | View |
Not sure which one? Send us the duty point (airflow / static pressure / noise limit) — use the selector or ask an engineer.
Other models in the LWBA4E400 seriesSame impeller, different speed grade or wiring
Adjacent sizesOne size up when airflow is short, one size down when it is too much
LWBE3G355-102NS-21Ø355 mm · 3,141.5 m³/h · 669.5 Pa · ECadjacent size
LWFE3G355-102PT-10Ø355 mm · 6,180 m³/h · 1,751 Pa · ECadjacent size
LWBE3G355-092NS-19Ø355 mm · 2,472 m³/h · 350.2 Pa · ECadjacent size
LWBE3G355-102NS-20Ø355 mm · 3,554 m³/h · 618 Pa · ECadjacent size
LWBE3G355-092PS-15Ø355 mm · 2,472 m³/h · 350 Pa · ECadjacent size
LWBD3G355-102NH-04Ø355 mm · 2,421 m³/h · 499 Pa · DCadjacent sizeAlternatives at a similar dutySimilar airflow, different construction or motor platform
LWAA4D400S-5MEB-11Ø400 mm · 4,532 m³/h · ACsimilar duty
LWAA4E400S-5MEB-09Ø400 mm · 4,532 m³/h · ACsimilar duty
LWBA4D400-138NT-08Ø400 mm · 4,532 m³/h · 494 Pa · ACsimilar duty
LWEA315S(T)M-158EØ315 mm · 4,545 m³/h · 373 Pa · ACsimilar dutyLWWAF-4.5A-0.18-4P-1-0014,510 m³/h · ACsimilar duty
LWFA-E-400-01Ø400 mm · 4,500 m³/h · 612 Pa · ACsimilar dutySee all Backward Curved Centrifugal Fans · select by duty point