EC Fan Cross-Reference Table

Find a LONGWELL drop-in replacement for any ebm-papst, Ziehl-Abegg, Nicotra Gebhardt, or Rosenberg EC fan. All entries verified for dimensional match (mounting holes, inlet ring, shaft height), control compatibility (0–10 V / Modbus), and performance equivalence (η, airflow, static pressure).

Coverage: 130+ SKUs across centrifugal plug, axial, forward-curved, high-pressure Compatibility: Dimensional + control + performance verified Updated: 2026-05-26

Compatibility legend: Drop-in Mounting + control + performance match within ±0.5 mm / ±2% η Adapter Requires shim ring or wire adapter, ships free with order

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ebm-papst K3G (Backward Curved Plug)
ebm-papst RadiPac (RDHx / L2A modules)
ebm-papst W3G / W4G (Axial)
Ziehl-Abegg RH series (Backward Curved Plug)
Ziehl-Abegg FB / FN (Axial)
Ziehl-Abegg ZAbluefin / ZAvblue
Nicotra Gebhardt DDP / RDP
Rosenberg ECFanGrid / GKHR
Forward-curved (small AHU, fan-coil)

Quick search tip · Use Ctrl/Cmd+F to find your model. All ebm-papst K3G XXX-YY-NN codes match by impeller diameter (the "XXX" portion). If your specific 3-letter suffix isn't listed, LONGWELL Engineering can supply a verified equivalent within 24 hours via engineering@zjlongwell.com.

ebm-papst K3G (RadiCal · Backward-Curved EC Plug Fan)

Ø (mm)	ebm-papst Model	LONGWELL Replacement	Airflow Range	Static (max)	Power (max)	η peak	Voltage	Fit
133	K3G133-AA01-A2	LWBE3G-133-EC	150–500 m³/h	320 Pa	80 W	62%	200–240 V 1Φ	Drop-in
175	K3G175-AB01-D8	LWBE3G-175-EC	250–950 m³/h	480 Pa	140 W	72%	200–240 V 1Φ	Drop-in
190	K3G190-RC05-03	LWBE3G-190-EC	300–1,150 m³/h	520 Pa	170 W	75%	200–240 V 1Φ	Drop-in
220	K3G220-RD05-03	LWBE3G-220-EC	400–1,600 m³/h	600 Pa	240 W	78%	200–240 V 1Φ	Drop-in
250	K3G250-AT39-71	LWBE3G-250-EC	500–2,200 m³/h	720 Pa	340 W	82%	200–240 V 1Φ	Drop-in
280	K3G280-AY30-89	LWBE3G-280-EC	500–2,800 m³/h	900 Pa	480 W	85%	200–240 V 1Φ	Drop-in
310	K3G310-AY40-90	LWBE3G-310-EC	650–3,500 m³/h	1,050 Pa	650 W	86%	200–240 V 1Φ	Drop-in
355	K3G355-PB47-04	LWBE3G-355-EC	800–4,500 m³/h	1,200 Pa	950 W	87%	380–480 V 3Φ	Drop-in
400	K3G400-AP31-03	LWBE3G-400-EC	1,000–5,800 m³/h	1,400 Pa	1,500 W	88%	380–480 V 3Φ	Drop-in
450	K3G450-PA31-03	LWBE3G-450-EC	1,200–7,200 m³/h	1,550 Pa	2,200 W	88%	380–480 V 3Φ	Drop-in
500	K3G500-PB31-A8	LWBE3G-500-EC	1,200–8,200 m³/h	1,800 Pa	3,000 W	89%	380–480 V 3Φ	Drop-in
560	K3G560-AQ31-01	LWBE3G-560-EC	1,500–10,500 m³/h	1,800 Pa	4,200 W	89%	380–480 V 3Φ	Drop-in
630	K3G630-AS50-01	LWBE3G-630-EC	1,800–13,000 m³/h	1,800 Pa	5,500 W	90%	380–480 V 3Φ	Drop-in
710	K3G710-AY02-N1	LWBE3G-710-EC	2,200–16,500 m³/h	1,700 Pa	7,500 W	90%	380–480 V 3Φ	Drop-in
800	K3G800-AY13-A8	LWBE3G-800-EC	3,000–20,500 m³/h	1,650 Pa	11,000 W	90%	380–480 V 3Φ	Drop-in
900	K3G900-AY16-K1	LWBE3G-900-EC	3,500–26,000 m³/h	1,600 Pa	14,000 W	90%	380–480 V 3Φ	Drop-in
1000	K3G1000-AY30-X1	LWBE3G-1000-EC	4,500–32,000 m³/h	1,550 Pa	18,500 W	89%	380–480 V 3Φ	Adapter
1250	K3G1250-AY58-X1	LWHV-1250-XL-EC	5,500–40,000 m³/h	1,500 Pa	25,000 W	88%	380–480 V 3Φ	Adapter

ebm-papst RadiPac (Pre-assembled RDHx / L2A Module)

Ø (mm)	ebm-papst RadiPac Model	LONGWELL Replacement	Airflow	Static	Application	Fit
310	RadiPac 310	LWBE3G-310-RDP (pre-assembled)	650–3,500 m³/h	1,050 Pa	RDHx 20–35 kW/rack	Drop-in
355	RadiPac 355	LWBE3G-355-RDP (pre-assembled)	800–4,500 m³/h	1,200 Pa	RDHx 30–50 kW/rack	Drop-in
400	RadiPac 400	LWBE3G-400-RDP (pre-assembled)	1,000–5,800 m³/h	1,400 Pa	L2A 40–70 kW/rack	Drop-in
500	RadiPac 500	LWBE3G-500-RDP (pre-assembled)	1,200–8,200 m³/h	1,800 Pa	L2A 60–100 kW/rack	Drop-in

ebm-papst W3G / W4G (Axial EC Fan)

Ø (mm)	ebm-papst Model	LONGWELL Replacement	Airflow	Static (max)	η peak	Voltage	Fit
250	W3G250-CT01-71	LWAE3G-250-EC	600–2,400 m³/h	180 Pa	55%	200–240 V 1Φ	Drop-in
300	W3G300-AQ04-23	LWAE3G-300-EC	900–3,600 m³/h	240 Pa	58%	200–240 V 1Φ	Drop-in
350	W3G350-CN02-30	LWAE3G-350-EC	1,200–5,000 m³/h	280 Pa	60%	200–240 V 1Φ	Drop-in
400	W3G400-CN10-23	LWAE3G-400-EC	1,800–6,800 m³/h	320 Pa	62%	200–240 V 1Φ	Drop-in
450	W3G450-DH40-23	LWAE3G-450-EC	2,500–8,500 m³/h	350 Pa	63%	380–480 V 3Φ	Drop-in
500	W3G500-DM30-30	LWAE3G-500-EC	3,200–11,000 m³/h	380 Pa	64%	380–480 V 3Φ	Drop-in
560	W3G560-EM21-50	LWAE3G-560-EC	4,000–14,000 m³/h	400 Pa	64%	380–480 V 3Φ	Drop-in
630	W3G630-GS21-01	LWAE3G-630-EC	5,500–18,000 m³/h	420 Pa	65%	380–480 V 3Φ	Drop-in
710	W3G710-GY01-25	LWAE3G-710-EC	7,500–24,000 m³/h	420 Pa	65%	380–480 V 3Φ	Drop-in
800	W3G800-GD24-50	LWAE3G-800-EC	9,000–30,000 m³/h	400 Pa	64%	380–480 V 3Φ	Drop-in
910	W3G910-GR21-01	LWAE3G-900-EC	11,000–35,000 m³/h	380 Pa	62%	380–480 V 3Φ	Adapter
1250	W3G1250-GS50-01	LWAE3G-1250-EC	15,000–48,000 m³/h	320 Pa	60%	380–480 V 3Φ	Adapter

Ziehl-Abegg RH Series (Backward-Curved EC Plug Fan)

Ø (mm)	Ziehl-Abegg Model	LONGWELL Replacement	Airflow	Static (max)	Power (max)	η peak	Fit
250	RH28C-VDK	LWBE3G-280-EC	500–2,400 m³/h	720 Pa	340 W	82%	Drop-in
315	RH31C-VDK	LWBE3G-310-EC	650–3,200 m³/h	1,000 Pa	650 W	86%	Drop-in
355	RH35C-6DK	LWBE3G-355-EC	800–4,200 m³/h	1,200 Pa	950 W	87%	Drop-in
400	RH40C-4DK	LWBE3G-400-EC	1,000–5,500 m³/h	1,400 Pa	1,500 W	88%	Drop-in
450	RH45C-4DK	LWBE3G-450-EC	1,200–7,000 m³/h	1,550 Pa	2,200 W	88%	Drop-in
500	RH50C-6DK	LWBE3G-500-EC	1,200–8,000 m³/h	1,800 Pa	3,000 W	89%	Drop-in
560	RH56C-6DK	LWBE3G-560-EC	1,500–10,000 m³/h	1,800 Pa	4,200 W	89%	Drop-in
630	RH63C-6DK	LWBE3G-630-EC	1,800–12,500 m³/h	1,800 Pa	5,500 W	90%	Drop-in
710	RH71C-6DK	LWBE3G-710-EC	2,200–16,000 m³/h	1,700 Pa	7,500 W	90%	Drop-in
800	RH80C-6DK	LWBE3G-800-EC	3,000–20,000 m³/h	1,650 Pa	11,000 W	90%	Drop-in
900	RH90C-6DK	LWBE3G-900-EC	3,500–25,000 m³/h	1,600 Pa	14,000 W	90%	Drop-in
1000	RH100C-6DK	LWBE3G-1000-EC	4,500–32,000 m³/h	1,550 Pa	18,500 W	89%	Adapter
1120	RH112C-6DK	LWHV-1120-XL-EC	5,500–38,000 m³/h	1,500 Pa	22,000 W	88%	Adapter

Ziehl-Abegg FB / FN Series (Axial EC Fan)

Ø (mm)	Ziehl-Abegg Model	LONGWELL Replacement	Airflow	Static	Voltage	Fit
300	FN030-4ER.4I.V7	LWAE3G-300-EC	900–3,500 m³/h	240 Pa	200–240 V	Drop-in
400	FN040-4EQ.4I.A7	LWAE3G-400-EC	1,800–6,500 m³/h	320 Pa	200–240 V	Drop-in
500	FN050-VDH.4F.V7	LWAE3G-500-EC	3,200–10,500 m³/h	380 Pa	380–480 V 3Φ	Drop-in
630	FN063-VDK.4F.V7	LWAE3G-630-EC	5,500–17,500 m³/h	420 Pa	380–480 V 3Φ	Drop-in
800	FN080-ZIK.GG.A7	LWAE3G-800-EC	9,000–28,000 m³/h	400 Pa	380–480 V 3Φ	Drop-in
910	FN091-ZIQ.GG.A7	LWAE3G-900-EC	11,000–34,000 m³/h	380 Pa	380–480 V 3Φ	Adapter

Ziehl-Abegg ZAbluefin / ZAvblue (Premium Winglet Plug Fan)

Ø (mm)	Ziehl-Abegg Model	LONGWELL Replacement	η peak Delta	Acoustic Delta	Note
450	ZAbluefin 450	LWBE3G-450-EC-Pro	−2 pp	+1.5 dB(A)	For premium acoustic OEM programs
500	ZAbluefin 500	LWBE3G-500-EC-Pro	−2 pp	+1.5 dB(A)	Hyperscale CRAH (relaxed dB)
560	ZAbluefin 560	LWBE3G-560-EC-Pro	−2 pp	+1.5 dB(A)	Industrial AHU
630	ZAvblue 630	LWBE3G-630-EC-Pro	−2 pp	+1.5 dB(A)	Large CRAH FanGrid

ZAbluefin uses winglet impeller geometry — LONGWELL Pro variant approximates 80% of acoustic advantage at <50% of cost. For strict acoustic-limited environments (urban edge DC, hospital), specify ZAbluefin.

Nicotra Gebhardt DDP / RDP / RLM

Ø (mm)	Nicotra Model	LONGWELL Replacement	Airflow	Static	Notes	Fit
250	DDP 9/9 EC	LWBE3G-250-EC	500–2,200 m³/h	720 Pa	AHRI-certified equivalent	Drop-in
280	DDP 9/9 12 EC	LWBE3G-280-EC	500–2,800 m³/h	900 Pa	For AHU OEM	Drop-in
355	RDP 355	LWBE3G-355-EC	800–4,500 m³/h	1,200 Pa	FFU compatibility	Drop-in
450	RLM 450 EC	LWBE3G-450-EC	1,200–7,200 m³/h	1,550 Pa	Plenum AHU	Drop-in
560	RDP 560	LWBE3G-560-EC	1,500–10,500 m³/h	1,800 Pa	FanGrid arrays	Drop-in
630	RDP 630	LWBE3G-630-EC	1,800–13,000 m³/h	1,800 Pa	Industrial AHU	Drop-in

Rosenberg ECFanGrid / GKHR / DRAE

Ø (mm)	Rosenberg Model	LONGWELL Replacement	Type	Notes	Fit
355	GKHR 355-CIK.121.4FF	LWBE3G-355-EC	Plug fan	AHU/RTU OEM	Drop-in
450	GKHR 450-CIK.140.6FF	LWBE3G-450-EC	Plug fan	Large AHU	Drop-in
500	DRAE 500-4-4D	LWBE3G-500-EC	Plug fan	CRAH retrofit	Drop-in
630	DRAE 630-4-4D	LWBE3G-630-EC	Plug fan	Large CRAH	Drop-in
—	ECFanGrid 4x355 retrofit kit	LWBE3G-355-EC × 4 + LONGWELLBUS	FanGrid kit	4-fan N+1 CRAH	Drop-in
—	ECFanGrid 9x355 retrofit kit	LWBE3G-355-EC × 9 + LONGWELLBUS	FanGrid kit	9-fan N+1 large CRAH	Drop-in

Forward-Curved (Small AHU, Fan Coil, Residential HVAC)

Type	ebm-papst Model	Ziehl-Abegg Model	LONGWELL Replacement	Application	Fit
Single-inlet FC blower	R3G190-RG02-01	—	LWFC-190-EC	Fan coil, residential AHU	Drop-in
Single-inlet FC blower	R3G225-RC05-01	—	LWFC-225-EC	Small AHU	Drop-in
Double-inlet FC blower	D2E146-AP47-22	—	LWFC-146DD-EC	FCU, ERV/HRV	Drop-in
Double-inlet FC blower	D3G250-FR07-23	RG28P-4EW	LWFC-250DD-EC	Small AHU, dryer	Drop-in

Don't see your model?

Email LONGWELL Engineering with your competitor part number and CFM/Pa duty point. We'll return a verified equivalent + datasheet within 24 hours.

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Disclaimer: All trademarks, product names, and model numbers referenced on this page are the property of their respective owners (ebm-papst, Ziehl-Abegg, Nicotra Gebhardt, Rosenberg). Cross-reference data is compiled from publicly available specifications and verified through dimensional measurement and performance testing. LONGWELL does not claim compatibility certifications from the original manufacturers. Specifications are subject to change without notice. Always confirm critical dimensions and electrical parameters with LONGWELL Engineering before integration.