Reference model
Ziehl-Abegg
RH31C
RH series · EC backward-curved centrifugal
plug fan · Ø315 mm
→
LONGWELL series
Same impeller diameter (Ø310 mm) · dimensions per LONGWELL drawing · 15–30 day production lead time
Specification Comparison
| Specification |
Ziehl-Abegg RH31C |
LONGWELL LWBE3G310 |
| Fan type |
EC backward-curved centrifugal plug fan |
EC backward-curved centrifugal plug fan |
| Impeller diameter |
Ø315 mm |
Ø310 mm 24 models |
| Airflow range |
650–3,200 m³/h |
up to 5,593 m³/h |
| Static pressure (max) |
1000 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 |
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 |
LWBE3G310 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
Ø310 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 LWBE3G310 are given on its dimensioned drawing. Compare them with the installed fan before ordering.
Electrical & control
The LONGWELL LWBE3G310 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 Ziehl-Abegg 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 LWBE3G310 is typically specified for Commercial AHU, cold chain condensing unit, hybrid heat pump. Common application categories include:
- AHU
- Cold chain condensing unit
- Hybrid heat pump
Particularly suited for cold chain condensing units and hybrid heat pump split sections.
FAQ
What should I check before using LONGWELL LWBE3G310 in place of Ziehl-Abegg RH31C?
The impeller diameter is the same. Confirm the mounting hole pattern, inlet ring diameter and shaft height against the dimensioned drawing on the LONGWELL LWBE3G310 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 LWBE3G310?
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 is the LONGWELL lead time?
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 Ø315 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 LWBE3G310 typically used for?
LWBE3G310 is typically specified for Commercial AHU, cold chain condensing unit, hybrid heat pump. Particularly suited for cold chain condensing units and hybrid heat pump split sections.
Evaluate a LONGWELL alternative to RH31C — 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.
View on longwellfans.com →
Ziehl-Abegg® is a registered trademark of its owner. This page is published by LONGWELL, an independent manufacturer and is not affiliated with, endorsed by, or sponsored by Ziehl-Abegg. All performance data sourced from publicly available datasheets. All performance figures reflect specific test conditions; final selection should be confirmed by duty point, voltage/control, mounting and project validation.