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Nicotra Gebhardt RDP 355 Alternative — LONGWELL LWBE3G355

Looking for an alternative for Nicotra Gebhardt RDP 355? The LONGWELL LWBE3G355 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: Cleanroom FFU, AHU, pharma cleanroom.

Reference model: Nicotra Gebhardt RDP 355 Diameter: Ø355 mm Family: RDP series → LONGWELL LWBE3G / LWAE3G / LWFC Sample: 1–3 days
Reference model
Nicotra Gebhardt
RDP 355
RDP series · EC plug fan · Ø355 mm
→
LONGWELL series
LONGWELL
LWBE3G355
Same impeller diameter (Ø355 mm) · dimensions per LONGWELL drawing · 15–30 day production lead time

Specification Comparison

Specification Nicotra Gebhardt RDP 355 LONGWELL LWBE3G355
Fan type EC plug fan EC plug fan
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 IP44 / 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 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

Matched to Nicotra Gebhardt RDP 355 by impeller size and fan type. Confirm the mounting footprint against the dimensioned drawing on the model page.

LWBE3G355 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

Ø355 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 LWBE3G355 are given on its dimensioned drawing. Compare them with the installed fan before ordering.

Electrical & control

The LONGWELL LWBE3G355 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 RTU register map with the fan so the BMS points can be re-mapped; the register addresses are not identical to the Nicotra Gebhardt map.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 LWBE3G355 is typically specified for Cleanroom FFU, AHU, pharma cleanroom. Common application categories include:

  • Cleanroom FFU
  • AHU
  • Pharma cleanroom

Particularly suited for cleanroom FFU and AHU OEM specifications.

FAQ

What should I check before using LONGWELL LWBE3G355 in place of Nicotra Gebhardt RDP 355?
The impeller diameter is the same. Confirm the mounting hole pattern, inlet ring diameter and shaft height against the dimensioned drawing on the LONGWELL LWBE3G355 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 LWBE3G355?
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 is the LONGWELL lead time?
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.
How is LONGWELL pricing determined?
LONGWELL quotes per project. Pricing depends on quantity, voltage, IP rating, and control protocol options.
What applications is LWBE3G355 typically used for?
LWBE3G355 is typically specified for Cleanroom FFU, AHU, pharma cleanroom. Particularly suited for cleanroom FFU and AHU OEM specifications.

Evaluate a LONGWELL alternative to RDP 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 Backward-Curved Centrifugal EC Fans range on longwellfans.com — request a quote on LWBE3G355 directly.
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Nicotra Gebhardt® is a trademark of its owner. LONGWELL is an independent manufacturer and is not affiliated with, endorsed by, or sponsored by Nicotra Gebhardt. This page is published as engineering reference based on public datasheets. All performance figures reflect specific test conditions; final selection should be confirmed by duty point, voltage/control, mounting and project validation.