🔥 Get Full Catalog

ebm-papst R3G450 Alternative — LONGWELL LWBE3G450

Looking for an alternative for ebm-papst R3G450-AT09-03? The LONGWELL LWBE3G450 has the same impeller diameter. Catalogue ratings, measured curves and dimensioned drawings for every model are on the LONGWELL Fan Selector; final selection is made at your duty point. R3G is ebm-papst's primary backward-curved centrifugal line; LONGWELL covers this size in the LWBE3G450 series.

Reference model: ebm-papst R3G450-AT09-03 Diameter: Ø450 mm Family: R3G → LONGWELL LWBE3G (backward-curved EC) Sample: 1–3 days
Reference model
ebm-papst
R3G450
R3G · EC backward-curved centrifugal · Ø450 mm
→
LONGWELL series
LONGWELL
LWBE3G450
Same impeller diameter (Ø450 mm) · dimensions per LONGWELL drawing · 15–30 day production lead time

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 · ETL on single-phase 115/230 V versions (UL 507 / CSA C22.2 No.113)
Sample lead time Per manufacturer quotation 1–3 days
Series lead time (≤500 units) Per manufacturer quotation 15–30 days
Pricing Per manufacturer quotation Quoted per project
Verify it on the LONGWELL selector: all 19 LWBE3G450 models — data, measured curves, drawings · LWBE3G450-188NT-21 (largest airflow in the series) · check your own duty point · samples, MOQ and lead time

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.

LWBE3G450 at a glance

Production Lead Time

15–30 days
Ex works for production batches. Sample units 1–3 days from stock.

Pricing

Quoted per project
Price depends on model, voltage, control option and quantity. Sample fees are credited in full against the first production order.

Same Impeller Diameter

Ø450 mm
Same impeller diameter; confirm the mounting hole pattern and inlet ring against the LONGWELL drawing before ordering.

Installation and control: what to check

Mechanical

Mounting dimensions of the LONGWELL LWBE3G450 are given on its dimensioned drawing. Confirm the mounting dimensions against the LONGWELL drawing before ordering.

Electrical & control

The LONGWELL LWBE3G450 accepts a 0–10 V analog speed reference, PWM and Modbus RTU (RS485) control signals (per model; see the model datasheet). LONGWELL supplies its Modbus register map for BMS integration. For other bus protocols, ask LONGWELL engineering for the integration options.

Performance

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 typically specified for 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

What should I check before using LONGWELL LWBE3G450 in place of ebm-papst R3G450?
The impeller diameter is the same — confirm the mounting hole pattern and inlet ring against the LONGWELL drawing on the model page. Available control inputs (0–10 V / PWM / Modbus RTU) and voltages are listed in the table above. Confirm the mounting hole pattern and inlet ring against the LONGWELL drawing on the model page. Matched model: LWBE3G450-188PT-09.
Where can I find efficiency data for LWBE3G450?
LONGWELL does not publish a single peak-efficiency figure for the LWBE3G450. The model page on the selection site gives airflow, static pressure and input power along the curve (measured where marked, nameplate-estimated otherwise), so the efficiency at your duty point follows directly; a test report for a specific model is available from engineering on request.
What is the LONGWELL lead time?
LONGWELL LWBE3G450 ships in 15–30 days for orders up to 500 units and 6–10 weeks for 1,000+ unit OEM programs. Sample units ship in 1–3 days from stocked Ø450 mm inventory.
How is LONGWELL pricing determined?
LONGWELL quotes per project. Pricing depends on quantity, voltage, IP rating, and control protocol options.
Is R3G the same as K3G?
No. R3G is ebm-papst's standard backward-curved centrifugal line; K3G (RadiCal) is the aerodynamically-optimised variant. They share frame sizes but differ in wheel design and part number. This page maps the R3G450 specifically; for the RadiCal equivalent see the K3G450 page in the alternatives index.

Evaluate a LONGWELL alternative to 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.

Request Sample View Full Cross-Reference Table
Official Product Page
Browse the full Backward-Curved Centrifugal EC Fans range on longwellfans.com — request a quote on LWBE3G450 directly.
View on longwellfans.com →
ebm-papst® is a registered trademark of ebm-papst Group. LONGWELL is an independent manufacturer and is not affiliated with, endorsed by, or sponsored by ebm-papst. Any references to third-party trademarks are used solely for identification and comparison purposes. All performance figures reflect specific test conditions; final selection should be confirmed by duty point, voltage/control, mounting and project validation.