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ebm-papst K3G310 Alternative — LONGWELL LWBE3G310

Looking for an alternative for ebm-papst K3G310-AY40-90? The LONGWELL LWBE3G310 is the same-size 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. Widely deployed across Commercial HVAC, cold chain condensing units, hybrid heat pumps.

Replaces: ebm-papst K3G310-AY40-90 Diameter: Ø310 mm Family: RadiCal / K3G → LONGWELL LWBE3G / LWAE3G / LWHV Sample: 1–3 days
Replacing
ebm-papst
K3G310
RadiCal / K3G · EC backward-curved centrifugal plug fan · Ø310 mm
→
With
LONGWELL
LWBE3G310
Same size class (Ø310 mm) — mounting per drawing · Same control · 15–30 day delivery

Specification Comparison

Specification ebm-papst K3G310 LONGWELL LWBE3G310
Fan type EC backward-curved centrifugal plug fan EC backward-curved centrifugal plug fan
Impeller diameter Ø310 mm Ø310 mm 24 models
Airflow range 650–3,500 m³/h up to 5,593 m³/h
Static pressure (max) 1050 Pa up to 1,730 Pa
Motor power (max) 650 W up to 1,588 W
Noise floor (Lw) 65 dB(A) from 63 dB(A) (nameplate, per model)
Voltage 200–240 V 1Φ 220–230 / 115 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 std · IP55 / IP67 option
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)
Verify it on the LONGWELL selector: all 24 LWBE3G310 models — data, measured curves, drawings · LWBE3G310-138PT-10 (largest airflow in the series) · check your own duty point · samples, MOQ and lead time

Why Engineers Switch from K3G310 to LWBE3G310

4–8× Faster Delivery

15–30 days
vs 14–22 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.

Drop-in Candidate · Same Size Class

Ø310 mm
Same impeller size and control protocol; confirm the mounting hole pattern and inlet ring against the LONGWELL drawing before ordering.

Drop-in compatibility: what matches and what to confirm

Mechanical match

The LONGWELL LWBE3G310 matches the ebm-papst K3G310 mounting pattern (M-mount, ISO 9001 plenum-fan footprint) per the mounting dimensions on the LONGWELL drawing. Inlet ring diameter, motor shaft height, and electrical termination box position are identical. In most retrofits no plate modification is needed — confirm the mounting dimensions against the LONGWELL drawing before ordering.

Electrical & control match

The LWBE3G310 accepts the same 0–10 V analog speed reference, PWM (1 kHz), and Modbus RTU (RS485) control signals as ebm-papst K3G310. 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 LWBE3G310 is widely deployed across Commercial HVAC, cold chain condensing units, hybrid heat pumps. Common application categories include:

  • AHU
  • Cold chain condensing unit
  • Heat pump split outdoor

Particularly suited for cold chain condensing unit and hybrid heat pump split outdoor section.

FAQ

Is LONGWELL LWBE3G310 a true drop-in replacement for ebm-papst K3G310?
Same size class and control interface. Confirm the mounting hole pattern, inlet ring diameter and shaft height against the dimensioned drawing on the LONGWELL LWBE3G310 model page before ordering; it accepts the same 0–10 V analog / PWM / Modbus RTU control signals and is offered in the voltages listed in the table above.
How does LWBE3G310 compare on efficiency to K3G310?
LONGWELL does not publish a single peak-efficiency figure for the LWBE3G310. 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 K3G310 requires 14–22 weeks ex-works due to ongoing allocation. LONGWELL LWBE3G310 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 Ø310 mm inventory.
What's the cost delta?
At equivalent specification (same Ø, same airflow/Pa, same IP, same control), LONGWELL LWBE3G310 typically lands at 40–55% below ebm-papst K3G310 ex-works pricing. Final pricing depends on quantity, voltage, IP rating, and control protocol options.
What applications is LWBE3G310 typically used for?
LWBE3G310 is widely deployed across Commercial HVAC, cold chain condensing units, hybrid heat pumps. Particularly suited for cold chain condensing unit and hybrid heat pump split outdoor section.

Replace your K3G310 — 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 LWBE3G310 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.