Looking for an alternative for Ziehl-Abegg FN063-VDK.4F.V7? The LONGWELL LWAE3G-630-EC is the dimensionally interchangeable equivalent — same mounting, same control protocol, AMCA 210/211 third-party-tested performance — at 40–55% lower landed cost with 15-day delivery vs 12–18 weeks ex-works Ziehl-Abegg. Widely deployed across Premium heat pump, data center free cooling, dry cooler, large BESS.
| Specification | Ziehl-Abegg FN063 | LONGWELL LWAE3G-630-EC |
|---|---|---|
| Fan type | EC axial fan | EC axial fan |
| Impeller diameter | Ø630 mm | Ø630 mm Drop-in |
| Airflow range | 5,500–17,500 m³/h | 5,500–17,500 m³/h |
| Static pressure (max) | 420 Pa | 420 Pa |
| Motor power (max) | 3,200 W | 3,200 W |
| Wire-to-air η peak (AMCA 210) | 65% | 63% |
| Noise floor (Lw) | 76 dB(A) | 78 dB(A) |
| Voltage | 380–480 V 3Φ | 380–480 V 3Φ |
| Control input | 0–10 V / PWM / Modbus / EC-Control | 0–10 V / PWM / Modbus RTU / Modbus TCP Compatible |
| IP rating | IP54 / IP55 | IP54 std · IP55 / IP67 option |
| Certifications | CE · UL · VDE · EAC | CE · UL · cUL · TÜV · ATEX · VDE · EAC · RoHS · REACH |
| Sample lead time | 4–10 weeks | 1–3 days |
| Series lead time (≤500 units) | 12–18 weeks | 15–30 days |
| Landed cost index (LONGWELL = 100) | 175–200 | 100 (baseline) |
The LONGWELL LWAE3G-630-EC matches the Ziehl-Abegg FN063 mounting pattern (M-mount, ISO 9001 plenum-fan footprint) within ±0.5 mm tolerance. Inlet ring diameter, motor shaft height, and electrical termination box position are identical. Drop-in retrofit requires no AHU rework, no plate modification, and no plenum hole resizing.
The LWAE3G-630-EC accepts the same 0–10 V analog speed reference, PWM (1 kHz), and Modbus RTU (RS485) control signals as Ziehl-Abegg FN063. Default Modbus register map is compatible with the Ziehl-Abegg ecosystem; LONGWELL provides a free Modbus map cross-reference for BMS integration. Ziehl-Abegg-specific proprietary protocols (EC-Control bus / ZA-control) are bridged via a free MODBUS gateway available from LONGWELL Engineering — no BMS reprogramming required.
The PQ curve of LONGWELL LWAE3G-630-EC sits within 2–3% of the Ziehl-Abegg FN063 curve across the full operating envelope (verified by third-party AMCA 210/211 testing at TÜV and Intertek labs). Wire-to-air efficiency at BEP is 63% vs 65% for Ziehl-Abegg (2 pp delta at peak). In typical part-load HVAC duty, the gap narrows to within 1 pp.
The LWAE3G-630-EC is widely deployed across Premium heat pump, data center free cooling, dry cooler, large BESS. Common application categories include:
Particularly suited for premium heat pump and data center free cooling.
Send a quick request — model + quantity + delivery address. Sample unit ships in 1–3 days for field validation. Series production at 15-day lead time after PO.
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