Centrifugal Fans
Centrifugal fans for duties that must overcome coils, filters and long duct runs: AHU / RTU, data-center CRAH, dust extraction and process ventilation. The LONGWELL centrifugal platform covers backward curved, forward curved and plug-fan (RLM) constructions on AC / DC / EC motors. Final selection is confirmed at the duty point (airflow / static pressure / voltage / control mode) and by project verification.
| Model | Size | Max airflowm³/h | Max static pressurePa | PowerW | NoisedB(A) | Speedrpm | VoltageV | ||
|---|---|---|---|---|---|---|---|---|---|
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LWBA4D355-102NT-05AC | Ø355 mm | 2,524 | 381 | 170 | 63 | 1,400 | 380 | Details |
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LWBA4D355-102NT-06AC | Ø355 mm | 2,812 | 515 | 250 | 65 | 1,500 | 380 | Details |
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LWBA4D355-102NT-09AC | Ø355 mm | 2,936 | 464 | 200 | 65 | 1,380 | 380 | Details |
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LWBA4D355-102NT-10AC | Ø355 mm | 3,245 | 515 | 270 | 67 | 1,600 | 380 | Details |
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LWBA4D355-138NT-11AC | Ø355 mm | 3,399 | 464 | 360 | 72 | 1,450 | 380 | Details |
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LWBA4D355-138NT-12AC | Ø355 mm | 4,017 | 618 | 550 | 77 | 1,700 | 380 | Details |





