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EC Backward-Curved Centrifugal Fan – Engineered Range, without Bracket catalogue cover
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EC Backward-Curved Centrifugal Fan – Engineered Range, without Bracket 2026 catalogue (PDF)

Backward-curved wheels reach high efficiency with a non-overloading power curve; widely used in AHUs, data-centre cooling, clean rooms and heat-recovery units. EC versions use an electronically commutated motor with built-in speed control for lower energy use. This LONGWELL 2026 catalogue runs to 43 pages and lists 90 model numbers.

Pages
43
File
PDF · 36.9 MB
Edition
2026
Language
English
Model numbers
90
Single-size PDFs
16
Motor type
EC
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What’s inside

  • Performance curves
  • Dimensional drawings and mounting sizes
  • Noise data
  • Typical applications
  • Also available as 16 single-size PDFs (Ø133–630 mm)

Download a single size

Each file contains the pages for one impeller / frame size — smaller and faster on mobile.

Ø133 mm1 pages · 2.5 MB Ø155 mm1 pages · 2.5 MB Ø175 mm1 pages · 2.0 MB Ø190 mm1 pages · 2.0 MB Ø220 mm2 pages · 2.0 MB Ø225 mm4 pages · 3.1 MB Ø250 mm9 pages · 6.5 MB Ø270 mm2 pages · 3.3 MB Ø280 mm8 pages · 7.4 MB Ø310 mm7 pages · 6.7 MB Ø355 mm9 pages · 6.8 MB Ø400 mm6 pages · 5.6 MB Ø450 mm10 pages · 7.6 MB Ø500 mm5 pages · 4.9 MB Ø560 mm5 pages · 4.4 MB Ø630 mm3 pages · 4.6 MB

Model numbers in this catalogue (90)

Click a model number to find its datasheet, drawing and curve.

LWBE-133LWBE-155LWBE-175LWBE-190LWBE-220LWBE-225LWBE-250LWBE-270LWBE-280LWBE-310LWBE-355LWBE-400LWBE-450LWBE-500LWBE-560LWBE-630LWBE3G133-072NS-06LWBE3G155-072NS-02LWBE3G175-072NS-10LWBE3G190-072NS-16LWBE3G220-072NS-11LWBE3G220-092NS-10LWBE3G225-072NS-10LWBE3G225-092NS-11LWBE3G225-092NS-12LWBE3G225-092NS-13LWBE3G250-072NS-21LWBE3G250-072NS-29LWBE3G250-072NU-20LWBE3G250-092NS-12LWBE3G250-092NS-22LWBE3G250-092NS-23LWBE3G250-102NS-24LWBE3G250-102NS-25LWBE3G250-102NS-26LWBE3G270-092NS-02LWBE3G270-092NU-01LWBE3G280-092NS-12LWBE3G280-092NS-13LWBE3G280-092NS-17LWBE3G280-102NS-14LWBE3G280-102NS-15LWBE3G280-102NS-19LWBE3G280-138NT-03LWBE3G280-138NT-18LWBE3G310-092NS-17LWBE3G310-092NS-20LWBE3G310-102NS-16LWBE3G310-102NS-18LWBE3G310-102NS-19LWBE3G310-138NT-05LWBE3G310-138NT-25LWBE3G355-092NS-19LWBE3G355-102NS-15LWBE3G355-102NS-20LWBE3G355-102NS-21LWBE3G355-138NT-12LWBE3G355-138NT-17LWBE3G355-138NT-27LWBE3G355-188NT-26LWBE3G355-188NT-29LWBE3G400-102NS-02LWBE3G400-102NS-14LWBE3G400-102NS-15LWBE3G400-102NS-16LWBE3G400-138NT-12LWBE3G400-188NT-17LWBE3G450-102NS-21LWBE3G450-138NT-08LWBE3G450-138NT-11LWBE3G450-138NT-12LWBE3G450-188NT-14LWBE3G450-188NT-15LWBE3G450-188NT-16LWBE3G450-188NT-17LWBE3G450-188NT-21LWBE3G450-188NT-22LWBE3G500-138NT-13LWBE3G500-188NT-08LWBE3G500-188NT-09LWBE3G500-188NT-10LWBE3G500-188NT-14LWBE3G560-188NT-01LWBE3G560-188NT-09LWBE3G560-188NT-10LWBE3G560-188NT-14LWBE3G560-218NT-13LWBE3G630-188NT-06LWBE3G630-188NT-07LWBE3G630-188NT-09

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