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Ziehl-Abegg RH50C Alternative — LONGWELL LWBE3G500

Looking for an alternative for Ziehl-Abegg RH50C-6DK? The LONGWELL LWBE3G500 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 12–18 weeks ex-works Ziehl-Abegg. Widely deployed across Data center CRAH, large AHU, BESS, liquid cooling CDU.

Replaces: Ziehl-Abegg RH50C-6DK Diameter: Ø500 mm Family: RH series → LONGWELL LWBE3G / LWAE3G / LWHV Sample: 1–3 days
Replacing
Ziehl-Abegg
RH50C
RH series · EC backward-curved centrifugal plug fan · Ø500 mm
→
With
LONGWELL
LWBE3G500
Same size class (Ø500 mm) — mounting per drawing · Same control · 15–30 day delivery

Specification Comparison

Specification Ziehl-Abegg RH50C LONGWELL LWBE3G500
Fan type EC backward-curved centrifugal plug fan EC backward-curved centrifugal plug fan
Impeller diameter Ø500 mm Ø500 mm 10 models
Airflow range 1,200–8,000 m³/h up to 14,214 m³/h
Static pressure (max) 1800 Pa up to 1,541 Pa
Motor power (max) 3,000 W up to 4,200 W
Noise floor (Lw) 37 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 std · IP55 / IP67 option
Certifications CE · UL · VDE · EAC CE · RoHS · REACH · ETL on request
Sample lead time 4–10 weeks 1–3 days
Series lead time (≤500 units) 12–18 weeks 15–30 days
Landed cost index (LONGWELL = 100) 175–200 100 (baseline)
Verify it on the LONGWELL selector: all 10 LWBE3G500 models — data, measured curves, drawings · LWBE3G500-188NT-08 (largest airflow in the series) · check your own duty point · samples, MOQ and lead time

Why Engineers Switch from RH50C to LWBE3G500

4–8× Faster Delivery

15–30 days
vs 12–18 weeks ex-works for Ziehl-Abegg 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

Ø500 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 LWBE3G500 matches the Ziehl-Abegg RH50C 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 LWBE3G500 accepts the same 0–10 V analog speed reference, PWM (1 kHz), and Modbus RTU (RS485) control signals as Ziehl-Abegg RH50C. 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 Ziehl-Abegg map.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 LWBE3G500 is widely deployed across Data center CRAH, large AHU, BESS, liquid cooling CDU. Common application categories include:

  • CRAH
  • Large AHU
  • BESS container
  • Liquid CDU

Particularly suited for hyperscale CRAH FanGrid and premium BESS container thermal.

FAQ

Is LONGWELL LWBE3G500 a true drop-in replacement for Ziehl-Abegg RH50C?
Same size class and control interface. Confirm the mounting hole pattern, inlet ring diameter and shaft height against the dimensioned drawing on the LONGWELL LWBE3G500 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 LWBE3G500 compare on efficiency to RH50C?
LONGWELL does not publish a single peak-efficiency figure for the LWBE3G500. 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: Ziehl-Abegg RH50C requires 12–18 weeks ex-works due to ongoing allocation. LONGWELL LWBE3G500 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 Ø500 mm inventory.
What’s the cost delta?
At equivalent specification (same Ø, same airflow/Pa, same IP, same control), LONGWELL LWBE3G500 typically lands at 40–55% below Ziehl-Abegg RH50C ex-works pricing. Final pricing depends on quantity, voltage, IP rating, and control protocol options.
What applications is LWBE3G500 typically used for?
LWBE3G500 is widely deployed across Data center CRAH, large AHU, BESS, liquid cooling CDU. Particularly suited for hyperscale CRAH FanGrid and premium BESS container thermal.

Replace your RH50C — 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 LWBE3G500 directly.
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Ziehl-Abegg® is a registered trademark of Ziehl-Abegg GmbH. LONGWELL is an independent manufacturer and is not affiliated with, endorsed by, or sponsored by Ziehl-Abegg. 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.