Replacing
Ziehl-Abegg
RH63C
RH series · EC backward-curved centrifugal
plug fan · Ø630 mm
→
With
Same size class (Ø630 mm) — mounting per drawing · Same control · 15–30 day delivery
Specification Comparison
| Specification |
Ziehl-Abegg RH63C |
LONGWELL LWBE3G630 |
| Fan type |
EC backward-curved centrifugal plug fan |
EC backward-curved centrifugal plug fan |
| Impeller diameter |
Ø630 mm |
Ø630 mm 7 models |
| Airflow range |
1,800–12,500 m³/h |
up to 21,742 m³/h |
| Static pressure (max) |
1800 Pa |
up to 1,677 Pa |
| Motor power (max) |
5,500 W |
up to 5,600 W |
| Noise floor (Lw) |
41 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) |
Why Engineers Switch from RH63C to LWBE3G630
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
Ø630 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 LWBE3G630 matches the Ziehl-Abegg RH63C 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 LWBE3G630 accepts the same 0–10 V analog speed reference, PWM (1 kHz), and Modbus RTU (RS485) control signals as Ziehl-Abegg RH63C. 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 LWBE3G630 is widely deployed across cooling tower, large industrial AHU, dust collection. Common application categories include:
- Cooling tower
- Large industrial AHU
Particularly suited for cooling tower and large industrial AHU applications.
FAQ
Is LONGWELL LWBE3G630 a true drop-in replacement for Ziehl-Abegg RH63C?
Same size class and control interface. Confirm the mounting hole pattern, inlet ring diameter and shaft height against the dimensioned drawing on the LONGWELL LWBE3G630 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 LWBE3G630 compare on efficiency to RH63C?
LONGWELL does not publish a single peak-efficiency figure for the LWBE3G630. 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 RH63C requires 12–18 weeks ex-works due to ongoing allocation. LONGWELL LWBE3G630 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 Ø630 mm inventory.
What’s the cost delta?
At equivalent specification (same Ø, same airflow/Pa, same IP, same control), LONGWELL LWBE3G630 typically lands at 40–55% below Ziehl-Abegg RH63C ex-works pricing. Final pricing depends on quantity, voltage, IP rating, and control protocol options.
What applications is LWBE3G630 typically used for?
LWBE3G630 is widely deployed across cooling tower, large industrial AHU, dust collection. Particularly suited for cooling tower and large industrial AHU applications.
Replace your RH63C — 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 LWBE3G630 directly.
View on longwellfans.com →
LONGWELL is an independent manufacturer and is not affiliated with, endorsed by, or sponsored by Ziehl-Abegg GmbH. Ziehl-Abegg® is a registered trademark of Ziehl-Abegg GmbH. All specifications are based on publicly available datasheets and are provided for engineering reference only. All performance figures reflect specific test conditions; final selection should be confirmed by duty point, voltage/control, mounting and project validation.