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ebm-papst K3G400 Alternative — LONGWELL LWBE3G400 Comparison

Looking for an alternative for ebm-papst K3G400-AP31-03? The LONGWELL LWBE3G400 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. Typical applications: Medium commercial AHU, BESS container thermal, semiconductor FFU, RDHx.

Reference model: ebm-papst K3G400-AP31-03 Diameter: Ø400 mm Family: RadiCal / K3G → LONGWELL LWBE3G / LWAE3G Sample: 1–3 days
Reference model
ebm-papst
K3G400
RadiCal / K3G · EC backward-curved centrifugal plug fan · Ø400 mm
→
LONGWELL series
LONGWELL
LWBE3G400
Same impeller diameter (Ø400 mm) · dimensions per LONGWELL drawing · 15–30 day production lead time

Specification Comparison

Specification ebm-papst K3G400 LONGWELL LWBE3G400
Fan type EC backward-curved centrifugal plug fan EC backward-curved centrifugal plug fan
Impeller diameter Ø400 mm Ø400 mm 13 models
Airflow range 1,000–5,800 m³/h up to 9,682 m³/h
Static pressure (max) 1400 Pa up to 1,627 Pa
Motor power (max) 1,500 W up to 2,060 W
Noise floor (Lw) 70 dB(A) from 62 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 / IP55 (per model)
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 13 LWBE3G400 models — data, measured curves, drawings · LWBE3G400-188NT-17 (largest airflow in the series) · check your own duty point · samples, MOQ and lead time

LWBE3G400 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.

Same Impeller Diameter

Ø400 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, inlet ring diameter, motor shaft height and terminal-box position of the LONGWELL LWBE3G400 are given on its dimensioned drawing. Compare them with the installed fan before ordering.

Electrical & control

The LONGWELL LWBE3G400 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 LWBE3G400 is typically specified for Medium commercial AHU, BESS container thermal, semiconductor FFU, RDHx. Common application categories include:

  • Medium AHU
  • FFU
  • BESS thermal
  • Active RDHx

Particularly suited for medium commercial AHU and BESS container thermal management.

FAQ

What should I check before using LONGWELL LWBE3G400 in place of ebm-papst K3G400?
The impeller diameter is the same. Confirm the mounting hole pattern, inlet ring diameter and shaft height against the dimensioned drawing on the LONGWELL LWBE3G400 model page before ordering; the available control inputs (0–10 V / PWM / Modbus RTU) and voltages are listed in the table above.
Where can I find efficiency data for LWBE3G400?
LONGWELL does not publish a single peak-efficiency figure for the LWBE3G400. 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 LWBE3G400 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 Ø400 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 LWBE3G400 typically used for?
LWBE3G400 is typically specified for Medium commercial AHU, BESS container thermal, semiconductor FFU, RDHx. Particularly suited for medium commercial AHU and BESS container thermal management.

Evaluate a LONGWELL alternative to K3G400 — 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 Backward-Curved Centrifugal EC Fans range on longwellfans.com — request a quote on LWBE3G400 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.