Rosenberg GKHR 450 Alternative — LONGWELL LWBE3G450
Looking for an alternative for Rosenberg GKHR 450-CIK.140.6FF? The LONGWELL LWBE3G450 is the same-size alternative — same control protocol, mounting dimensions on the LONGWELL drawing, performance characterized using AMCA 210/211 test methods (test report on request) — at 40–55% lower landed cost with 15–30 day delivery vs 10–16 weeks ex-works Rosenberg. Widely deployed across Large AHU, CRAH retrofit, FanGrid arrays.
LWBE3G450
Specification Comparison
| Specification | Rosenberg GKHR 450 | LONGWELL LWBE3G450 |
|---|---|---|
| Fan type | EC plug fan | EC plug fan |
| Impeller diameter | Ø450 mm | Ø450 mm 19 models |
| Airflow range | 1,200–7,200 m³/h | up to 12,647 m³/h |
| Static pressure (max) | 1,550 Pa | up to 2,342 Pa |
| Motor power (max) | 2,200 W | up to 4,600 W |
| Noise floor (Lw) | 72 dB(A) | from 68 dB(A) (nameplate, per model) |
| Voltage | 380–480 V 3Φ | 220–230 V 1Φ · 380–400 V 3Φ |
| Control input | 0–10 V / PWM / Modbus / EC-Control | 0–10 V / PWM / Modbus RTU (RS485) |
| IP rating | IP54 / IP55 | IP54 std · IP55 / IP67 option |
| Certifications | CE · UL · VDE · EAC | CE · RoHS · REACH · ETL on single-phase 115/230 V versions (UL 507 / CSA C22.2 No.113) |
| Sample lead time | 4–10 weeks | 1–3 days |
| Series lead time (≤500 units) | 10–16 weeks | 15–30 days |
| Landed cost index (LONGWELL = 100) | 175–200 | 100 (baseline) |
Matched to Rosenberg GKHR 450-CIK.140.6FF by impeller size and fan type — LONGWELL model LWBE3G450 ← GKHR 450. Confirm the mounting footprint against the dimensioned drawing on the model page.
Why Engineers Switch from GKHR 450 to LWBE3G450
4–8× Faster Delivery
40–55% Lower Landed Cost
Drop-in Candidate · Same Size Class
Drop-in compatibility: what matches and what to confirm
Mechanical match
The LONGWELL LWBE3G450 matches the Rosenberg GKHR 450 mounting pattern (M-mount, ISO 9001 plenum-fan footprint) per the mounting dimensions on the LONGWELL drawing. Inlet ring diameter, motor shaft height, and electrical termination box position are identical. In most retrofits no plate modification is needed — confirm the mounting dimensions against the LONGWELL drawing before ordering.
Electrical & control match
The LWBE3G450 accepts the same 0–10 V analog speed reference, PWM (1 kHz), and Modbus RTU (RS485) control signals as Rosenberg GKHR 450. LONGWELL supplies its Modbus RTU register map with the fan so the BMS points can be re-mapped; the register addresses are not identical to the Rosenberg map.For ebm-papst-specific bus protocols (EC-Control), ask LONGWELL engineering for the integration options.
Performance match
The measured P-Q curve of every LONGWELL model is on its model page; we check your duty point against it before quoting.
Typical Applications
The LWBE3G450 is widely deployed across Large AHU, CRAH retrofit, FanGrid arrays. Common application categories include:
- Large AHU
- CRAH
- FanGrid
Particularly suited for EU CRAH FanGrid retrofit and large commercial AHU.
FAQ
Is LONGWELL LWBE3G450 a true drop-in replacement for Rosenberg GKHR 450?
How does LWBE3G450 compare on efficiency to GKHR 450?
What’s the 2026 lead time difference?
What’s the cost delta?
What applications is LWBE3G450 typically used for?
Replace your GKHR 450 — samples in 1–3 days
Send a quick request — model + quantity + delivery address. Sample unit ships in 1–3 days for field validation. Series production at 15–30 day lead time after PO.
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