ebm-papst R3G450 Alternative — LONGWELL LWBE3G450
Looking for an alternative for ebm-papst R3G450-AT09-03? The LONGWELL LWBE3G450 is the same-size backward-curved EC 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 14–22 weeks ex-works ebm-papst. R3G is ebm-papst's primary backward-curved centrifugal line; LONGWELL covers this size in the LWBE3G450 series.
R3G450
LWBE3G450
Specification Comparison
| Specification | ebm-papst R3G450 | LONGWELL LWBE3G450 |
|---|---|---|
| Fan type | EC backward-curved centrifugal | EC backward-curved centrifugal |
| Impeller diameter | Ø450 mm | Ø450 mm 19 models |
| Airflow range | up to 9,600 m³/h | up to 12,647 m³/h |
| Static pressure (max) | up to 2,000 Pa | up to 2,342 Pa |
| Motor power (max) | ≈2,500–2,590 W class | up to 4,600 W |
| Noise floor (Lw) | 77 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) |
| 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) | 14–22 weeks | 15–30 days |
| Landed cost index (LONGWELL = 100) | 175–200 | 100 (baseline) |
Matched to ebm-papst R3G450-AT09-03 by impeller size and fan type — LONGWELL model LWBE3G450-188PT-09. Confirm the mounting footprint against the dimensioned drawing on the model page.
Why Engineers Switch from R3G450 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 ebm-papst R3G450 mounting pattern (plenum-fan footprint, inlet ring diameter, motor shaft height, terminal-box position) per the mounting dimensions on the LONGWELL drawing. 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 ebm-papst R3G450. LONGWELL provides the Modbus register map and a cross-reference to the ebm-papst map for BMS integration. 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. VALIDATED CASE: the LWBE3G450-188PT-09 match is documented in a completed AHU energy-retrofit project (up to ~2,000 Pa).
Typical Applications
The LWBE3G450 is widely deployed across industrial AHU and validated fan-grid energy retrofits. Common application categories include:
- Industrial AHU
- Validated AHU energy retrofit
- Fan-grid arrays
The 450 mm match is a documented validated-case retrofit — a real AHU energy-retrofit reference, not a paper estimate.
FAQ
Is LONGWELL LWBE3G450 a true drop-in replacement for ebm-papst R3G450?
How does LWBE3G450 compare on efficiency to R3G450?
What's the 2026 lead-time difference?
What's the cost delta?
Is R3G the same as K3G?
Replace your R3G450 — 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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