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.
- ImpellerØ155 mm
- Max airflow433 m³/h
- Max static pressure371 Pa
- Voltage230 V
- Speed3,570 rpm
- Input power40 W
- Noise63 dB(A)
LWBE3G155-072NS-02 EC Backward Curved Centrifugal Fan Ø155 mm
Ø155 mm | EC | Max airflow 433 m³/h | Max static pressure 371 Pa | 63 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.
LWBE3G155-072NS-02 is a LONGWELL EC Backward Curved Centrifugal Fan from the Backward Curved Centrifugal Fans range, impeller Ø155 mm, rated 230 V EC, maximum airflow 433 m³/h, maximum static pressure 371 Pa, noise 63 dB(A), input power 40 W. The EC motor integrates the drive electronics: stepless speed control by 0–10 V or PWM signal, speed feedback and high efficiency at part load.
Technical data
| Model | LWBE3G155-072NS-02 |
|---|---|
| Series | LWBE3G155 |
| Motor type | EC |
| Phase | 1-phase |
| Rated voltage | 230 V |
| Frequency | 50 Hz |
| Current | 0.3 A |
| Input power | 40 W |
| Speed | 3,570 rpm |
| Max. airflow | 433 m³/h |
| Max. airflow (CFM) | 254 CFM |
| Max. static pressure | 371 Pa |
| Noise | 63 dB(A) |
| Ambient temperature | -25 ~ 60 °C |
| Storage temperature | -25 ~ 70℃ |
| Humidity | 0 ~ 85 % RH |
| Altitude | < 1000m |
| Impeller diameter | Ø155 mm |
| Rotor diameter | 72 |
| Impeller material | PA6+GF ( Impeller ) |
| Protection class | IP44 |
| Insulation class | B |
| Bearing | Maintenance-free deep groove 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 |
| Speed control | Control input 0~10VDC/PWM |
| Control signal | Control signal VSP voltage range1±0.1VDC~9.5±0.2VDC(During normal operation, when the VSP voltage is below 1.0±0.1VDC, the motor switches from operating mode to standby mode) |
| PWM input | PWM signal: frequency 1K–10KHz, amplitude 10–12V,duty cycle 30%–70% . |
| Speed feedback | Tach output: 1 Pulse/R; FG internal open circuit output, external pull-up resistor 10KΩ, pull-up voltage +10V |
| Auxiliary output | Output 10VDC, Max Current 10 mA |
| Protection functions | Over-temperature protection, Over-current protection, Locked-rotor protection’ |
| Soft start | Delay time <20 seconds to full speed |
| 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 LWBE3G155: 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 (Ø155 mm · EC)
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 | |
|---|---|---|---|---|---|---|---|
| LWBE3G155-072NS-02 this model | 433 m³/h | 371 Pa | 3,570 rpm | 40 W | 63 dB(A) | 230 V | |
| LWBE3G155-072PS-01 | 433 m³/h | 371 Pa | 3,570 rpm | 40 W | 63 dB(A) | 230 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 LWBE3G155 seriesSame impeller, different speed grade or wiring
Adjacent sizesOne size up when airflow is short, one size down when it is too much
LWFA8E153-072SS-01Ø153 mm · 165 m³/h · 100 Pa · ACadjacent size
LWFD3G160-092SH-02Ø160 mm · 556 m³/h · 649 Pa · DCadjacent size
LWFA2E160-092SS-04Ø160 mm · 525 m³/h · 618 Pa · ACadjacent size
LWFD3G160-092SH-03Ø160 mm · 556 m³/h · 649 Pa · DCadjacent size
LWFD3G160-092SM-02Ø160 mm · 556 m³/h · 649 Pa · DCadjacent size
LWFA4E160-092NS-02Ø160 mm · 412 m³/h · 154.5 Pa · ACadjacent sizeAlternatives at a similar dutySimilar airflow, different construction or motor platform
LWFE3G133-072NS-01Ø133 mm · 433 m³/h · 288 Pa · ECsimilar duty
LWFE3G120-072DS-01Ø120 mm · 433 m³/h · 263 Pa · ECsimilar duty
LWFA2E120-092DS-03Ø120 mm · 433 m³/h · 309 Pa · ACsimilar dutyLWEX-AF-3A-0.18-4P-3-001433 m³/h · ACsimilar duty
LWFE3G133-072PS-03Ø133 mm · 432.6 m³/h · 432.6 Pa · ECsimilar dutySee all Backward Curved Centrifugal Fans · select by duty point