EC Fan Alternative Guide

SKU-specific alternative pages for the most-deployed competitor models from ebm-papst (K3G plug · W3G axial · R3G residential · RadiPac FFU · D2E double-inlet), Ziehl-Abegg (RH plug · FN axial · ZAbluefin / ZAvblue premium winglet), Nicotra Gebhardt, Rosenberg, and Sanyo Denki. Each page lists the competitor model's published data next to LONGWELL catalogue ratings, measured curves and drawings.

How to use this index: find the competitor model you're looking to replace. Each page shows the LONGWELL series with the same impeller diameter (or the nearest listed size), side-by-side specifications, the mounting and control items to check, and LONGWELL lead times (samples 1–3 days for stock models, production 15–30 days ex works).
Have the duty point instead of a competitor model? Open the LONGWELL fan selector — enter airflow and static pressure and get every model whose measured curve covers it, with drawings, datasheets and an RFQ in one click. · Samples, MOQ and lead time

ebm-papst K3G (Backward-Curved EC Plug Fan) (18 models)

German EC plug fan used in AHU/CRAH plug-fan installations.

Ø133 mm · RadiCal / K3G
K3G133→LWBE3G133

Server cabinet ventilation and compact residential range-hood oem.

Ø175 mm · RadiCal / K3G
K3G175→LWBE3G175

Premium range-hood oem with matter 1.2 smart kitchen integration.

Ø190 mm · RadiCal / K3G
K3G190→LWBE3G190

Decentralized single-room erv retrofit (lunos-class) and small fan coil units.

Ø220 mm · RadiCal / K3G
K3G220→LWBE3G220

Residential heat pump indoor fan coil and premium range hood retrofit.

Ø250 mm · RadiCal / K3G
K3G250→LWBE3G250

Residential heat pump indoor coil and small ahu plug-fan installations.

Ø280 mm · RadiCal / K3G
K3G280→LWBE3G280

280 mm rdhx fan supply for ai data center rear-door coolers and ffu modules.

Ø310 mm · RadiCal / K3G
K3G310→LWBE3G310

Cold chain condensing unit and hybrid heat pump split outdoor section.

Ø355 mm · RadiCal / K3G
K3G355→LWBE3G355

L2a liquid-to-air data center modules, in-row coolers, and 30–50 kw/rack rdhx.

Ø400 mm · RadiCal / K3G
K3G400→LWBE3G400

Medium commercial ahu and bess container thermal management.

Ø450 mm · RadiCal / K3G
K3G450→LWBE3G450

Large commercial ahu and crah fangrid retrofit with n+1 redundancy.

Ø500 mm · RadiCal / K3G
K3G500→LWBE3G500

Hyperscale data center CRAH fan-wall arrays.

Ø560 mm · RadiCal / K3G
K3G560→LWBE3G560

Hyperscale crah fangrid 6×6 and 9-fan array configurations.

Ø630 mm · RadiCal / K3G
K3G630→LWBE3G630

Cooling tower and large industrial process ahu duty.

Ø710 mm · RadiCal / K3G
K3G710→LWBE3G630 (nearest size)

Very large crah and industrial process exhaust applications.

Ø800 mm · RadiCal / K3G
K3G800→LWBE3G630 (nearest size)

Stadium and atrium hvac plus very large industrial ahu duty.

Ø900 mm · RadiCal / K3G
K3G900→LWBE3G630 (nearest size)

Mining ventilation and very large industrial process exhaust.

Ø1000 mm · RadiCal / K3G
K3G1000→LWBE3G630 (nearest size)

Heavy mining ventilation and cement kiln induced-draft duty.

Ø1250 mm · RadiCal / K3G
K3G1250→LWBE3G630 (nearest size)

Mining main ventilation fans and tunnel + industrial mega-process duty.

ebm-papst W3G (Axial EC Fan) (12 models)

German EC axial fan — for condenser, free cooling, heat pump outdoor unit.

ebm-papst R3G (Forward-Curved Residential/PHI) (5 models)

Residential EC blower.

ebm-papst RadiPac (Pre-Assembled FFU/RDHx Module) (4 models)

Pre-engineered fan + filter + housing module for RDHx / L2A / data center.

ebm-papst D2E / D3G (Double-Inlet Forward-Curved) (3 models)

Double-inlet forward-curved blower — for FCU / ERV / dryer.

Ziehl-Abegg RH (Backward-Curved EC Plug Fan) (13 models)

German EC plug fan — RH series.

Ziehl-Abegg FN (Axial EC Fan) (6 models)

German EC axial fan — FN series, for condenser, free cooling, heat pump.

Ziehl-Abegg ZAbluefin (Premium Winglet Plug) (4 models)

Winglet plug fan for acoustic-critical applications.

Ziehl-Abegg ZAvblue (Premium Winglet Axial) (3 models)

Winglet axial fan for heat pump and free-cooling applications.

Nicotra Gebhardt (DDP / RDP / RLM) (4 models)

Italian EC plug fan used in US AHU OEM specifications.

Rosenberg (GKHR / DRAE) (3 models)

German EC plug fan — common in EU AHU / RTU OEM and CRAH retrofit.

Sanyo Denki (San Ace) (3 models)

Japanese EC fan — JIS spec, for DCFC / BESS rack / Japan cold storage / fab FFU.

ebm-papst R3G (Backward-Curved Mid–Large AHU / Data Center) (8 models)

R3G is ebm-papst's primary backward-curved centrifugal line — mapped size-for-size to LONGWELL LWBE3G Ø133–630 mm; every page links the real models and curves on the selection site.

Nicotra Gebhardt Commercial — Duty-Point Matches (AT / DD / RDH / RZR / ADH) (6 models)

LONGWELL builds direct-drive fans only, so there is no belt-drive frame mirror of the Nicotra range. Each page shows which LONGWELL direct-drive blower (LWDD, LWFA-E) or LWBE3G EC plug-fan FanGrid covers the duty, with real airflow, pressure and drawings on the selection site.

Delta Electronics (DC Axial Cooling Fans) (7 models)

Taiwanese DC axial cooling fans — industry standard for server, telecom, and networking thermal management, 40 mm to 254 mm frame sizes.

Don't see your model?

Email sales@longwellfans.com with your competitor model number — proposed LONGWELL model + datasheet within 1 business day.
ebm-papst®, Ziehl-Abegg®, Nicotra Gebhardt®, Rosenberg®, Sanyo Denki® and Delta Electronics® are registered trademarks of their respective owners. LONGWELL is an independent manufacturer and is not affiliated with, endorsed by, or sponsored by these companies. Any references to third-party trademarks are used solely for identification and comparison purposes. All performance figures reflect specific test conditions; final selection should be confirmed by duty point, voltage/control, mounting and project validation.

All 90 cross-references in one table

Competitor model → LONGWELL series of the same impeller diameter (or the nearest listed size). LONGWELL figures are catalogue ratings of the largest model in the series (maximum airflow, maximum static pressure, maximum input power); the series link opens the models on the Fan Selector with curves, drawings and datasheets. Mounting is confirmed against the LONGWELL drawing before ordering; final selection at the duty point. The same data is available as JSON at select.longwellfans.com/wp-json/lws/v1/xref.

BrandCompetitor modelLONGWELL seriesØ mmMax airflow m³/hMax static PaMax power WVoltageControlModelsPage
ebm-papstD2E146LWFE3G1461461,133876220220–230 V 1Φ0–10 V / PWM / Modbus RTU5comparison
ebm-papstD3G190LWFE3G180 (nearest size)1802,060742400220–230 V 1Φ0–10 V / PWM / Modbus RTU2comparison
ebm-papstD3G250LWFE3G2502504,058742750220–230 V 1Φ · 380–400 V 3Φ0–10 V / PWM / Modbus RTU2comparison
ebm-papstK3G133LWBE3G13313347360972220–230 / 115 V 1Φ0–10 V / PWM / Modbus RTU6comparison
ebm-papstK3G175LWBE3G175175924893170220–230 / 115 V 1Φ0–10 V / PWM / Modbus RTU11comparison
ebm-papstK3G190LWBE3G1901909731,009170220–230 / 115 V 1Φ0–10 V / PWM / Modbus RTU10comparison
ebm-papstK3G220LWBE3G2202201,184978168220–230 / 115 V 1Φ0–10 V / PWM / Modbus RTU10comparison
ebm-papstK3G250LWBE3G2502503,7081,7511,000220–230 / 115 V 1Φ · 380–400 V 3Φ0–10 V / PWM / Modbus RTU29comparison
ebm-papstK3G280LWBE3G2802804,3771,7511,355220–230 / 115 V 1Φ · 380–400 V 3Φ0–10 V / PWM / Modbus RTU23comparison
ebm-papstK3G310LWBE3G3103105,5931,7301,588220–230 / 115 V 1Φ · 380–400 V 3Φ0–10 V / PWM / Modbus RTU24comparison
ebm-papstK3G355LWBE3G3553558,0342,5243,100220–230 V 1Φ · 380–400 V 3Φ0–10 V / PWM / Modbus RTU21comparison
ebm-papstK3G400LWBE3G4004009,6821,6272,060220–230 V 1Φ · 380–400 V 3Φ0–10 V / PWM / Modbus RTU13comparison
ebm-papstK3G450LWBE3G45045012,6472,3424,600220–230 V 1Φ · 380–400 V 3Φ0–10 V / PWM / Modbus RTU19comparison
ebm-papstK3G500LWBE3G50050014,2141,5414,200380–400 V 3Φ0–10 V / PWM / Modbus RTU10comparison
ebm-papstK3G560LWBE3G56056023,8961,5455,600380–400 V 3Φ0–10 V / PWM / Modbus RTU10comparison
ebm-papstK3G630LWBE3G63063021,7421,6775,600380–400 V 3Φ0–10 V / PWM / Modbus RTU7comparison
ebm-papstK3G710LWBE3G630 (nearest size)63021,7421,6775,600380–400 V 3Φ0–10 V / PWM / Modbus RTU7comparison
ebm-papstK3G800LWBE3G630 (nearest size)63021,7421,6775,600380–400 V 3Φ0–10 V / PWM / Modbus RTU7comparison
ebm-papstK3G900LWBE3G630 (nearest size)63021,7421,6775,600380–400 V 3Φ0–10 V / PWM / Modbus RTU7comparison
ebm-papstK3G1000LWBE3G630 (nearest size)63021,7421,6775,600380–400 V 3Φ0–10 V / PWM / Modbus RTU7comparison
ebm-papstK3G1250LWBE3G630 (nearest size)63021,7421,6775,600380–400 V 3Φ0–10 V / PWM / Modbus RTU7comparison
ebm-papstR3G160 PHILWBE3G155 (nearest size)15543337140220–230 V 1Φ0–10 V / PWM / Modbus RTU2comparison
ebm-papstR3G175LWBE3G175175924893170220–230 / 115 V 1Φ0–10 V / PWM / Modbus RTU11comparison
ebm-papstR3G190LWBE3G1901909731,009170220–230 / 115 V 1Φ0–10 V / PWM / Modbus RTU10comparison
ebm-papstR3G220LWBE3G2202201,184978168220–230 / 115 V 1Φ0–10 V / PWM / Modbus RTU10comparison
ebm-papstR3G225LWBE3G2252251,6301,030315220–230 / 115 V 1Φ0–10 V / PWM / Modbus RTU16comparison
ebm-papstR3G250LWBE3G2502503,7081,7511,000220–230 / 115 V 1Φ · 380–400 V 3Φ0–10 V / PWM / Modbus RTU29comparison
ebm-papstR3G280LWBE3G2802804,3771,7511,355220–230 / 115 V 1Φ · 380–400 V 3Φ0–10 V / PWM / Modbus RTU23comparison
ebm-papstR3G310LWBE3G3103105,5931,7301,588220–230 / 115 V 1Φ · 380–400 V 3Φ0–10 V / PWM / Modbus RTU24comparison
ebm-papstR3G355LWBE3G3553558,0342,5243,100220–230 V 1Φ · 380–400 V 3Φ0–10 V / PWM / Modbus RTU21comparison
ebm-papstR3G400LWBE3G4004009,6821,6272,060220–230 V 1Φ · 380–400 V 3Φ0–10 V / PWM / Modbus RTU13comparison
ebm-papstR3G450LWBE3G45045012,6472,3424,600220–230 V 1Φ · 380–400 V 3Φ0–10 V / PWM / Modbus RTU19comparison
ebm-papstR3G560LWBE3G56056023,8961,5455,600380–400 V 3Φ0–10 V / PWM / Modbus RTU10comparison
ebm-papstR3G630LWBE3G63063021,7421,6775,600380–400 V 3Φ0–10 V / PWM / Modbus RTU7comparison
ebm-papstRadiPac 310LWBE3G3103105,5931,7301,588220–230 / 115 V 1Φ · 380–400 V 3Φ0–10 V / PWM / Modbus RTU24comparison
ebm-papstRadiPac 355LWBE3G3553558,0342,5243,100220–230 V 1Φ · 380–400 V 3Φ0–10 V / PWM / Modbus RTU21comparison
ebm-papstRadiPac 400LWBE3G4004009,6821,6272,060220–230 V 1Φ · 380–400 V 3Φ0–10 V / PWM / Modbus RTU13comparison
ebm-papstRadiPac 500LWBE3G50050014,2141,5414,200380–400 V 3Φ0–10 V / PWM / Modbus RTU10comparison
ebm-papstW3G250LWAE3G2502501,916290170220–230 V 1Φ0–10 V / PWM / Modbus RTU10comparison
ebm-papstW3G300LWAE3G3003002,781228242220–230 V 1Φ0–10 V / PWM / Modbus RTU15comparison
ebm-papstW3G350LWAE3G3503503,554150175220–230 V 1Φ0–10 V / PWM / Modbus RTU9comparison
ebm-papstW3G400LWAE3G4004005,562258360220–230 V 1Φ0–10 V / PWM / Modbus RTU9comparison
ebm-papstW3G450LWAE3G4504506,695242445220–230 V 1Φ0–10 V / PWM / Modbus RTU10comparison
ebm-papstW3G500LWAE3G50050010,506330850220–230 V 1Φ · 380–400 V 3Φ0–10 V / PWM / Modbus RTU9comparison
ebm-papstW3G560LWAE3G55056012,154330950380–400 V 3Φ0–10 V / PWM / Modbus RTU6comparison
ebm-papstW3G630LWAE3G63063014,935258887220–230 V 1Φ · 380–400 V 3Φ0–10 V / PWM / Modbus RTU11comparison
ebm-papstW3G710LWAE3G71071019,1772581,146220–230 V 1Φ · 380–400 V 3Φ0–10 V / PWM / Modbus RTU5comparison
ebm-papstW3G800LWAE3G80080029,4004222,396380–400 V 3Φ0–10 V / PWM / Modbus RTU6comparison
ebm-papstW3G910LWAE3G90091032,3133652,785380–400 V 3Φ0–10 V / PWM / Modbus RTU2comparison
ebm-papstW3G1250LWAE3G900 (nearest size)90032,3133652,785380–400 V 3Φ0–10 V / PWM / Modbus RTU2comparison
Nicotra GebhardtAT 15/15LWFA-E011,000910—220–230 V 1ΦAC16comparison
Nicotra GebhardtAT 18/18LWBE3G560023,8961,5455,600380–400 V 3Φ0–10 V / PWM / Modbus RTU10comparison
Nicotra GebhardtDD / DDMLWDD05,836608585220–230 V 1Φ0–10 V / PWM / Modbus RTU10comparison
Nicotra GebhardtDDP 9/9 ECLWDD9-9-EC04,146587—220–230 V 1Φ0–10 V / PWM / Modbus RTU1comparison
Nicotra GebhardtRDH 560LWBE3G56056023,8961,5455,600380–400 V 3Φ0–10 V / PWM / Modbus RTU10comparison
Nicotra GebhardtRDP 355LWBE3G3553558,0342,5243,100220–230 V 1Φ · 380–400 V 3Φ0–10 V / PWM / Modbus RTU21comparison
Nicotra GebhardtRDP 560LWBE3G56056023,8961,5455,600380–400 V 3Φ0–10 V / PWM / Modbus RTU10comparison
Nicotra GebhardtRLM 450LWBE3G45045012,6472,3424,600220–230 V 1Φ · 380–400 V 3Φ0–10 V / PWM / Modbus RTU19comparison
RosenbergDRAE 500LWAE3G50050010,506330850220–230 V 1Φ · 380–400 V 3Φ0–10 V / PWM / Modbus RTU9comparison
RosenbergGKHR 355LWBE3G3553558,0342,5243,100220–230 V 1Φ · 380–400 V 3Φ0–10 V / PWM / Modbus RTU21comparison
RosenbergGKHR 450LWBE3G45045012,6472,3424,600220–230 V 1Φ · 380–400 V 3Φ0–10 V / PWM / Modbus RTU19comparison
Sanyo DenkiSan Ace 9HVLWAD1203804084485712 / 24 / 48 V DCAC48comparison
Sanyo DenkiSan Ace Cold StorageLWAD3G30002,524185165310 V 1Φ0–10 V / PWM / Modbus RTU6comparison
Sanyo DenkiSan Ace EC TurboLWBE3G28004,3771,7511,355220–230 / 115 V 1Φ · 380–400 V 3Φ0–10 V / PWM / Modbus RTU23comparison
Ziehl-AbeggFN030LWAE3G3003002,781228242220–230 V 1Φ0–10 V / PWM / Modbus RTU15comparison
Ziehl-AbeggFN040LWAE3G4004005,562258360220–230 V 1Φ0–10 V / PWM / Modbus RTU9comparison
Ziehl-AbeggFN050LWAE3G50050010,506330850220–230 V 1Φ · 380–400 V 3Φ0–10 V / PWM / Modbus RTU9comparison
Ziehl-AbeggFN063LWAE3G63063014,935258887220–230 V 1Φ · 380–400 V 3Φ0–10 V / PWM / Modbus RTU11comparison
Ziehl-AbeggFN080LWAE3G80080029,4004222,396380–400 V 3Φ0–10 V / PWM / Modbus RTU6comparison
Ziehl-AbeggFN091LWAE3G90091032,3133652,785380–400 V 3Φ0–10 V / PWM / Modbus RTU2comparison
Ziehl-AbeggRH28CLWBE3G280284,3771,7511,355220–230 / 115 V 1Φ · 380–400 V 3Φ0–10 V / PWM / Modbus RTU23comparison
Ziehl-AbeggRH31CLWBE3G310315,5931,7301,588220–230 / 115 V 1Φ · 380–400 V 3Φ0–10 V / PWM / Modbus RTU24comparison
Ziehl-AbeggRH35CLWBE3G355358,0342,5243,100220–230 V 1Φ · 380–400 V 3Φ0–10 V / PWM / Modbus RTU21comparison
Ziehl-AbeggRH40CLWBE3G400409,6821,6272,060220–230 V 1Φ · 380–400 V 3Φ0–10 V / PWM / Modbus RTU13comparison
Ziehl-AbeggRH45CLWBE3G4504512,6472,3424,600220–230 V 1Φ · 380–400 V 3Φ0–10 V / PWM / Modbus RTU19comparison
Ziehl-AbeggRH50CLWBE3G5005014,2141,5414,200380–400 V 3Φ0–10 V / PWM / Modbus RTU10comparison
Ziehl-AbeggRH56CLWBE3G5605623,8961,5455,600380–400 V 3Φ0–10 V / PWM / Modbus RTU10comparison
Ziehl-AbeggRH63CLWBE3G6306321,7421,6775,600380–400 V 3Φ0–10 V / PWM / Modbus RTU7comparison
Ziehl-AbeggRH71CLWBE3G630 (nearest size)63021,7421,6775,600380–400 V 3Φ0–10 V / PWM / Modbus RTU7comparison
Ziehl-AbeggRH80CLWBE3G630 (nearest size)63021,7421,6775,600380–400 V 3Φ0–10 V / PWM / Modbus RTU7comparison
Ziehl-AbeggRH90CLWBE3G630 (nearest size)63021,7421,6775,600380–400 V 3Φ0–10 V / PWM / Modbus RTU7comparison
Ziehl-AbeggRH100CLWBE3G630 (nearest size)63021,7421,6775,600380–400 V 3Φ0–10 V / PWM / Modbus RTU7comparison
Ziehl-AbeggRH112CLWBE3G630 (nearest size)63021,7421,6775,600380–400 V 3Φ0–10 V / PWM / Modbus RTU7comparison
Ziehl-AbeggZAbluefin 450LWBE3G45045012,6472,3424,600220–230 V 1Φ · 380–400 V 3Φ0–10 V / PWM / Modbus RTU19comparison
Ziehl-AbeggZAbluefin 500LWBE3G50050014,2141,5414,200380–400 V 3Φ0–10 V / PWM / Modbus RTU10comparison
Ziehl-AbeggZAbluefin 560LWBE3G56056023,8961,5455,600380–400 V 3Φ0–10 V / PWM / Modbus RTU10comparison
Ziehl-AbeggZAbluefin 630LWBE3G63063021,7421,6775,600380–400 V 3Φ0–10 V / PWM / Modbus RTU7comparison
Ziehl-AbeggZAvblue 630LWAE3G63063014,935258887220–230 V 1Φ · 380–400 V 3Φ0–10 V / PWM / Modbus RTU11comparison
Ziehl-AbeggZAvblue 800LWAE3G80080029,4004222,396380–400 V 3Φ0–10 V / PWM / Modbus RTU6comparison
Ziehl-AbeggZAvblue 1000LWAE3G900 (nearest size)90032,3133652,785380–400 V 3Φ0–10 V / PWM / Modbus RTU2comparison