Ziehl-Abegg ZAbluefin 450 Alternative — LONGWELL LWBE3G-450-EC-Pro
Looking for an alternative for Ziehl-Abegg ZAbluefin 450? The LONGWELL LWBE3G-450-EC-Pro 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 acoustic AHU, urban hospital OR, residential boundary noise compliance.
ZAbluefin 450
LWBE3G-450-EC-Pro
Specification Comparison
| Specification | Ziehl-Abegg ZAbluefin 450 | LONGWELL LWBE3G-450-EC-Pro |
|---|---|---|
| Fan type | EC backward-curved winglet plug fan | EC backward-curved winglet plug fan |
| Impeller diameter | Ø450 mm | Ø450 mm Drop-in |
| Airflow range | 1,200–7,200 m³/h | 1,200–7,200 m³/h |
| Static pressure (max) | 1550 Pa | 1550 Pa |
| Motor power (max) | 2,200 W | 2,200 W |
| Wire-to-air η peak (AMCA 210) | 93% | 88% |
| Noise floor (Lw) | 70 dB(A) | 72 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) |
Why Engineers Switch from ZAbluefin 450 to LWBE3G-450-EC-Pro
4–8× Faster Delivery
40–55% Lower Landed Cost
True Drop-In Compatibility
Drop-In Compatibility Details
Mechanical match
The LONGWELL LWBE3G-450-EC-Pro matches the Ziehl-Abegg ZAbluefin 450 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.
Electrical & control match
The LWBE3G-450-EC-Pro accepts the same 0–10 V analog speed reference, PWM (1 kHz), and Modbus RTU (RS485) control signals as Ziehl-Abegg ZAbluefin 450. 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.
Performance match
The PQ curve of LONGWELL LWBE3G-450-EC-Pro sits within 2–3% of the Ziehl-Abegg ZAbluefin 450 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 88% vs 93% for Ziehl-Abegg (5 pp delta at peak). In typical part-load HVAC duty, the gap narrows to within 1 pp.
Typical Applications
The LWBE3G-450-EC-Pro is widely deployed across premium acoustic AHU, urban hospital OR, residential boundary noise compliance. Common application categories include:
- Premium AHU
- Quiet hospital
- Premium acoustic
Particularly suited for premium acoustic OEM programs and urban hospital OR builds.
FAQ
Is LONGWELL LWBE3G-450-EC-Pro a true drop-in replacement for Ziehl-Abegg ZAbluefin 450?
How does LWBE3G-450-EC-Pro compare on efficiency to ZAbluefin 450?
What’s the 2026 lead time difference?
What’s the cost delta?
What applications is LWBE3G-450-EC-Pro typically used for?
Replace your ZAbluefin 450 in 5 days
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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