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ebm-papst W3G1250 Alternative — LONGWELL LWAE3G900

Looking for an alternative for ebm-papst W3G1250-GS50-01? The LONGWELL LWAE3G900 is the nearest listed size (Ø900 mm); a Ø1250 mm drop-in is not in the current catalogue — same control protocol, performance characterized using AMCA 210/211 test methods (test report on request) — at 40–55% lower landed cost with 15–30 day delivery vs 20–26 weeks ex-works ebm-papst. Widely deployed across Mega cooling tower, wind tunnel ventilation, mining axial.

Replaces: ebm-papst W3G1250-GS50-01 Diameter: Ø1250 mm Family: W3G axial → LONGWELL LWBE3G / LWAE3G / LWHV / LWFC Sample: 1–3 days
Replacing
ebm-papst
W3G1250
W3G axial · EC axial fan · Ø1250 mm
→
With
LONGWELL
LWAE3G900
Nearest listed size (not a drop-in) · Same control · 15–30 day delivery

Specification Comparison

Specification ebm-papst W3G1250 LONGWELL LWAE3G900
Fan type EC axial fan EC axial fan
Impeller diameter Ø1250 mm No listed Ø1250 mm model — nearest listed size Ø900 mm (LWAE3G900, 2 models)
Airflow range 15,000–48,000 m³/h up to 32,313 m³/h per Ø900 unit — larger duties as FanGrid arrays
Static pressure (max) 320 Pa up to 365 Pa (Ø900 unit)
Motor power (max) 14,000 W up to 2,785 W per unit
Noise floor (Lw) 85 dB(A) from 76 dB(A) (nameplate, per model)
Voltage 380–480 V 3Φ 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 request
Sample lead time 4–10 weeks 1–3 days
Series lead time (≤500 units) 20–26 weeks 15–30 days
Landed cost index (LONGWELL = 100) 175–200 100 (baseline)
Verify it on the LONGWELL selector: all 2 LWAE3G900 models — data, measured curves, drawings · LWAE3G900TS-5MGW-01 (largest airflow in the series) · check your own duty point · samples, MOQ and lead time

Why Engineers Switch from W3G1250 to LWAE3G900

4–8× Faster Delivery

15–30 days
vs 20–26 weeks ex-works for ebm-papst in 2026. Sample units 1–3 days from stock vs 4–10 weeks.

40–55% Lower Landed Cost

−€600 to −€2,400
per unit at equivalent spec, depending on size and quantity. On a 50-unit FanGrid retrofit, typical CapEx delta is €30k–€120k.

Nearest size + FanGrid option

Ø900 mm
nearest listed size with the same 0–10 V / PWM / Modbus RTU control; mounting per the LONGWELL drawing (not a drop-in for Ø1250 mm).

Drop-in compatibility: what matches and what to confirm

Mechanical match

LONGWELL does not currently list a Ø1250 mm unit in this family. The nearest listed size is Ø900 mm (LWAE3G900); for the airflow of a single Ø1250 mm fan, engineering proposes 2–4 smaller EC units in a FanGrid array or a custom development — mounting is not a drop-in.

Electrical & control match

The LWAE3G900 accepts the same 0–10 V analog speed reference, PWM (1 kHz), and Modbus RTU (RS485) control signals as ebm-papst W3G1250. 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.

Typical Applications

The LWAE3G900 is widely deployed across Mega cooling tower, wind tunnel ventilation, mining axial. Common application categories include:

  • Mega cooling tower
  • Wind tunnel
  • Mining axial

Particularly suited for mega-scale cooling tower and wind tunnel ventilation.

FAQ

Is LONGWELL LWAE3G900 a true drop-in replacement for ebm-papst W3G1250?
Not as a drop-in: LONGWELL does not list a Ø1250 mm model in this family. The nearest listed size is Ø900 mm (LWAE3G900); for equal airflow we propose a FanGrid array of smaller EC units or a custom development. Ask engineering with your duty point.
How does LWAE3G900 compare on efficiency to W3G1250?
LONGWELL does not publish a single peak-efficiency figure for the LWAE3G900. 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's the 2026 lead time difference?
As of May 2026: ebm-papst W3G1250 requires 20–26 weeks ex-works due to ongoing allocation. LONGWELL LWAE3G900 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 Ø1250 mm inventory.
What's the cost delta?
At equivalent specification (same Ø, same airflow/Pa, same IP, same control), LONGWELL LWAE3G900 typically lands at 40–55% below ebm-papst W3G1250 ex-works pricing. Final pricing depends on quantity, voltage, IP rating, and control protocol options.
What applications is LWAE3G900 typically used for?
LWAE3G900 is widely deployed across Mega cooling tower, wind tunnel ventilation, mining axial. Particularly suited for mega-scale cooling tower and wind tunnel ventilation.

Replace your W3G1250 — 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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Official Product Page
Browse the full EC Axial Fans range on longwellfans.com — request a quote on LWAE3G900 directly.
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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.