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Ziehl-Abegg RH28C Alternative — LONGWELL LWBE3G280

Looking for an alternative for Ziehl-Abegg RH28C-VDK? The LONGWELL LWBE3G280 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: Small AHU, compact FFU, edge data center, residential heat pump.

Reference model: Ziehl-Abegg RH28C-VDK Diameter: Ø280 mm Family: RH series → LONGWELL LWBE3G / LWAE3G / LWFC Sample: 1–3 days
Reference model
Ziehl-Abegg
RH28C
RH series · EC backward-curved centrifugal plug fan · Ø280 mm
→
LONGWELL series
LONGWELL
LWBE3G280
Same impeller diameter (Ø280 mm) · dimensions per LONGWELL drawing · 15–30 day production lead time

Specification Comparison

Specification Ziehl-Abegg RH28C LONGWELL LWBE3G280
Fan type EC backward-curved centrifugal plug fan EC backward-curved centrifugal plug fan
Impeller diameter Ø280 mm Ø280 mm 23 models
Airflow range 500–2,400 m³/h up to 4,377 m³/h
Static pressure (max) 720 Pa up to 1,751 Pa
Motor power (max) 340 W up to 1,355 W
Noise floor (Lw) 62 dB(A) from 69 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
Verify it on the LONGWELL selector: all 23 LWBE3G280 models — data, measured curves, drawings · LWBE3G280-102NT-17 (largest airflow in the series) · check your own duty point · samples, MOQ and lead time

LWBE3G280 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

Ø280 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 LWBE3G280 are given on its dimensioned drawing. Compare them with the installed fan before ordering.

Electrical & control

The LONGWELL LWBE3G280 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 LWBE3G280 is typically specified for Small AHU, compact FFU, edge data center, residential heat pump. Common application categories include:

  • Small AHU
  • FFU compact
  • Edge data center
  • Residential heat pump

Particularly suited for small commercial AHU and edge data center / compact FFU.

FAQ

What should I check before using LONGWELL LWBE3G280 in place of Ziehl-Abegg RH28C?
The impeller diameter is the same. Confirm the mounting hole pattern, inlet ring diameter and shaft height against the dimensioned drawing on the LONGWELL LWBE3G280 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 LWBE3G280?
LONGWELL does not publish a single peak-efficiency figure for the LWBE3G280. 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 LWBE3G280 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 Ø280 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 LWBE3G280 typically used for?
LWBE3G280 is typically specified for Small AHU, compact FFU, edge data center, residential heat pump. Particularly suited for small commercial AHU and edge data center / compact FFU.

Evaluate a LONGWELL alternative to RH28C — 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 LWBE3G280 directly.
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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.