ebm-papst R3G280 Alternative — LONGWELL LWBE3G280
Looking for an alternative for ebm-papst R3G280-AF35-71? The LONGWELL LWBE3G280 is the same-size backward-curved EC 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 14–22 weeks ex-works ebm-papst. R3G is ebm-papst's primary backward-curved centrifugal line; LONGWELL covers this size in the LWBE3G280 series.
R3G280
LWBE3G280
Specification Comparison
| Specification | ebm-papst R3G280 | LONGWELL LWBE3G280 |
|---|---|---|
| Fan type | EC backward-curved centrifugal | EC backward-curved centrifugal |
| Impeller / frame | Ø280 mm | Ø280 mm Same size class |
| Airflow range | up to 2,800 m³/h | up to 4,377 m³/h |
| Static pressure (max) | up to 800 Pa | up to 1,751 Pa |
| Power class | ≈425 W | up to 1,355 W (rated per model) |
| Noise floor (Lw) | 71 dB(A) | from 69 dB(A) (nameplate, per model) |
| Voltage | 200–277 V | 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) |
| Certifications | CE · UL · VDE · EAC | CE · RoHS · REACH · ETL on single-phase 115/230 V versions (UL 507 / CSA C22.2 No.113) |
| Sample lead time | 4–10 weeks | 1–3 days |
| Series lead time (≤500 units) | 14–22 weeks | 15–30 days |
| Landed cost index (LONGWELL = 100) | 175–200 | 100 (baseline) |
Matched to ebm-papst R3G280-AF35-71 by impeller size and fan type — LONGWELL model LWBE3G280-092PS-03. Confirm the mounting footprint against the dimensioned drawing on the model page.
Why Engineers Switch from R3G280 to LWBE3G280
4–8× Faster Delivery
40–55% Lower Landed Cost
Drop-in Candidate · Same Size Class
Drop-in compatibility: what matches and what to confirm
Mechanical match
The LONGWELL LWBE3G280 matches the ebm-papst R3G280 mounting pattern (plenum-fan footprint, inlet ring diameter, motor shaft height, terminal-box position) per the mounting dimensions on the LONGWELL drawing. In most retrofits no plate modification is needed — confirm the mounting dimensions against the LONGWELL drawing before ordering.
Electrical & control match
The LWBE3G280 accepts the same 0–10 V analog speed reference, PWM (1 kHz), and Modbus RTU (RS485) control as the ebm-papst R3G280.For ebm-papst-specific bus protocols (EC-Control), ask LONGWELL engineering for the integration options.
Performance match
The LONGWELL LWBE3G280 range covers the ebm-papst R3G280 operating envelope on nameplate data (characterized using AMCA 210/211 test methods; test report available on request). The LWBE3G280-092PS-03 match is an energy-saving selection — it holds the CRAH duty point at materially lower input power.
Typical Applications
The LONGWELL LWBE3G280 is widely deployed across data-center CRAC/CRAH, server-rack cooling and RDHx modules. Common application categories include:
- Data-center CRAC / CRAH
- Server-rack & RDHx cooling
- FFU modules
The 280 mm size is the workhorse of AI data-center rear-door and in-row cooling.
FAQ
Is LONGWELL LWBE3G280 a true drop-in replacement for ebm-papst R3G280?
How does LWBE3G280 compare on efficiency to R3G280?
What's the 2026 lead-time difference?
What's the cost delta?
Is R3G the same as K3G?
Replace your R3G280 — 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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