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ebm-papst RadiPac 355 Alternative — LONGWELL LWBE3G355

Looking for an alternative for ebm-papst RadiPac 355? The LONGWELL LWBE3G355 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 16–22 weeks ex-works ebm-papst. Widely deployed across L2A liquid-to-air modules, in-row coolers, RDHx 30–50 kW/rack.

Replaces: ebm-papst RadiPac 355 Diameter: Ø355 mm Family: RadiPac pre-assembled → LONGWELL LWBE3G / LWAE3G / LWHV / LWFC Sample: 1–3 days
Replacing
ebm-papst
RadiPac 355
RadiPac pre-assembled · EC plug fan pre-assembled FFU module · Ø355 mm
→
With
LONGWELL
LWBE3G355
Same size class (Ø355 mm) — mounting per drawing · Same control · 15–30 day delivery

Specification Comparison

Specification ebm-papst RadiPac 355 LONGWELL LWBE3G355
Fan type EC plug fan pre-assembled FFU module EC plug fan pre-assembled FFU module
Impeller diameter Ø355 mm Ø355 mm 21 models
Airflow range 800–4,500 m³/h up to 8,034 m³/h
Static pressure (max) 1200 Pa up to 2,524 Pa
Motor power (max) 950 W up to 3,100 W
Noise floor (Lw) 68 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)
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) 16–22 weeks 15–30 days
Landed cost index (LONGWELL = 100) 175–200 100 (baseline)
Verify it on the LONGWELL selector: all 21 LWBE3G355 models — data, measured curves, drawings · LWBE3G355-188NT-26 (largest airflow in the series) · check your own duty point · samples, MOQ and lead time

Why Engineers Switch from RadiPac 355 to LWBE3G355

4–8× Faster Delivery

15–30 days
vs 16–22 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

Ø355 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 LWBE3G355 matches the ebm-papst RadiPac 355 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 LWBE3G355 accepts the same 0–10 V analog speed reference, PWM (1 kHz), and Modbus RTU (RS485) control signals as ebm-papst RadiPac 355. 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 LWBE3G355 is widely deployed across L2A liquid-to-air modules, in-row coolers, RDHx 30–50 kW/rack. Common application categories include:

  • RDHx 30–50 kW/rack
  • L2A modules
  • In-row cooler

Particularly suited for L2A liquid-to-air OEM module supply for AI data center.

FAQ

Is LONGWELL LWBE3G355 a true drop-in replacement for ebm-papst RadiPac 355?
Same size class and control interface. Confirm the mounting hole pattern, inlet ring diameter and shaft height against the dimensioned drawing on the LONGWELL LWBE3G355 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 LWBE3G355 compare on efficiency to RadiPac 355?
LONGWELL does not publish a single peak-efficiency figure for the LWBE3G355. 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 RadiPac 355 requires 16–22 weeks ex-works due to ongoing allocation. LONGWELL LWBE3G355 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 Ø355 mm inventory.
What's the cost delta?
At equivalent specification (same Ø, same airflow/Pa, same IP, same control), LONGWELL LWBE3G355 typically lands at 40–55% below ebm-papst RadiPac 355 ex-works pricing. Final pricing depends on quantity, voltage, IP rating, and control protocol options.
What applications is LWBE3G355 typically used for?
LWBE3G355 is widely deployed across L2A liquid-to-air modules, in-row coolers, RDHx 30–50 kW/rack. Particularly suited for L2A liquid-to-air OEM module supply for AI data center.

Replace your RadiPac 355 — 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 FFU Fans & Motors range on longwellfans.com — request a quote on LWBE3G355 directly.
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ebm-papst® and RadiPac® are registered trademarks 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.