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ebm-papst K3G1250 Alternative — LONGWELL LWBE3G630

Looking for an alternative for ebm-papst K3G1250-AY58-X1? The LONGWELL LWBE3G630 is the nearest listed size (Ø630 mm); LONGWELL does not list a Ø1250 mm model in this family. Catalogue ratings, measured curves and dimensioned drawings are on the LONGWELL Fan Selector; final selection is made at your duty point. Typical applications: Mega-scale industrial process, mining main fans, tunnel ventilation.

Reference model: ebm-papst K3G1250-AY58-X1 Diameter: Ø1250 mm Family: RadiCal / K3G-series → LONGWELL LWBE3G / LWAE3G / LWFC Sample: 1–3 days
Reference model
ebm-papst
K3G1250
RadiCal / K3G-series · EC backward-curved centrifugal plug fan · Ø1250 mm
→
LONGWELL series
LONGWELL
LWBE3G630
Nearest listed size · dimensions per LONGWELL drawing · 15–30 day production lead time

Specification Comparison

Specification ebm-papst K3G1250 LONGWELL LWBE3G630
Fan type EC backward-curved centrifugal plug fan EC backward-curved centrifugal plug fan
Impeller diameter Ø1250 mm No listed Ø1250 mm model — nearest listed size Ø630 mm (LWBE3G630, 7 models)
Airflow range 5,500–40,000 m³/h up to 21,742 m³/h per Ø630 unit — larger duties as FanGrid arrays
Static pressure (max) 1500 Pa up to 1,677 Pa (Ø630 unit)
Motor power (max) 25,000 W up to 5,600 W per unit
Noise floor (Lw) 52 dB(A) from 66 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 (per model)
Certifications CE · UL · VDE · EAC CE · RoHS
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 7 LWBE3G630 models — data, measured curves, drawings · LWBE3G630-188NT-09 (largest airflow in the series) · check your own duty point · samples, MOQ and lead time

LWBE3G630 at a glance

Production Lead Time

15–30 days
Ex works for production batches. Stock standard models ship as samples in 1–3 days.

Pricing

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

Nearest size + FanGrid option

Ø630 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).

Installation and control: what to check

Mechanical

LONGWELL does not currently list a Ø1250 mm unit in this family. The nearest listed size is Ø630 mm (LWBE3G630); 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

The LONGWELL LWBE3G630 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.

Typical Applications

The LWBE3G630 is typically specified for Mega-scale industrial process, mining main fans, tunnel ventilation. Common application categories include:

  • Mega-scale process
  • Mining main fan
  • Tunnel ventilation

Particularly suited for mining main ventilation fans and tunnel + industrial mega-process duty.

FAQ

What should I check before using LONGWELL LWBE3G630 in place of ebm-papst K3G1250?
Not as a drop-in: LONGWELL does not list a Ø1250 mm model in this family. The nearest listed size is Ø630 mm (LWBE3G630); for equal airflow we propose a FanGrid array of smaller EC units or a custom development. Ask engineering with your duty point.
Where can I find efficiency data for LWBE3G630?
LONGWELL does not publish a single peak-efficiency figure for the LWBE3G630. 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 LWBE3G630 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.
How is LONGWELL pricing determined?
LONGWELL quotes per project. Pricing depends on quantity, voltage, IP rating, and control protocol options.
What applications is LWBE3G630 typically used for?
LWBE3G630 is typically specified for Mega-scale industrial process, mining main fans, tunnel ventilation. Particularly suited for mining main ventilation fans and tunnel + industrial mega-process duty.

Evaluate a LONGWELL alternative to K3G1250 — 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 Industrial / High-Pressure Centrifugal Fans range on longwellfans.com — request a quote on LWBE3G630 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.