ebm-papst R3G280 Alternative — LONGWELL LWBE3G-280-EC
Looking for an alternative for ebm-papst R3G280-AF35-71? The LONGWELL LWBE3G-280-EC is the dimensionally interchangeable backward-curved EC equivalent — same mounting, same control protocol, AMCA 210/211 third-party-tested performance — at 40–55% lower landed cost with 15-day delivery vs 14–22 weeks ex-works ebm-papst. R3G is ebm-papst's primary backward-curved centrifugal line; LONGWELL matches or exceeds it across the full size range.
R3G280
LWBE3G-280-EC
Specification Comparison
| Specification | ebm-papst R3G280 | LONGWELL LWBE3G-280-EC |
|---|---|---|
| Fan type | EC backward-curved centrifugal | EC backward-curved centrifugal |
| Impeller / frame | Ø280 mm | Ø280 mm Drop-in |
| Airflow range | up to 2,800 m³/h | up to 2,800 m³/h |
| Static pressure (max) | up to 800 Pa | up to 800 Pa |
| Power class | ≈425 W (LW ≈225 W at duty) | ≈425 W (LW ≈225 W at duty) |
| Wire-to-air η peak (AMCA 210) | 89% | 89% |
| Noise floor (Lw) | 71 dB(A) | 72 dB(A) |
| Voltage | 200–277 V | 200–277 V |
| Control input | 0–10 V / PWM / Modbus / EC-Control | 0–10 V / PWM / Modbus RTU / Modbus TCP Compatible |
| Certifications | CE · UL · VDE · EAC | CE · UL · cUL · TÜV · EAC · RoHS · REACH |
| 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) |
Engineered match verified against ebm-papst R3G280-AF35-71 in LONGWELL's cross-brand model library (record: LWBE3G280-092PS-03). The LWBE3G280-092PS-03 match is an energy-saving selection — it holds the CRAH duty point at materially lower input power.
Why Engineers Switch from R3G280 to LWBE3G-280-EC
4–8× Faster Delivery
40–55% Lower Landed Cost
−48% Input Power at CRAH Duty
Drop-In Compatibility Details
Mechanical match
The LONGWELL LWBE3G-280-EC matches the ebm-papst R3G280 mounting pattern (plenum-fan footprint, inlet ring diameter, motor shaft height, terminal-box position) within ±0.5 mm tolerance. Drop-in retrofit requires no AHU rework, no plate modification, and no plenum hole resizing.
Electrical & control match
The LWBE3G-280-EC accepts the same 0–10 V analog speed reference, PWM (1 kHz), and Modbus RTU (RS485) control as the ebm-papst R3G280. LONGWELL provides a free Modbus register-map cross-reference for BMS integration; ebm-papst EC-Control / GeneSys bus is bridged with a free MODBUS gateway — no BMS reprogramming required.
Performance match
The PQ curve of the LONGWELL LWBE3G-280-EC sits within 2–3% of the ebm-papst R3G280 across the operating envelope (third-party AMCA 210/211 testing at TÜV / Intertek). Wire-to-air efficiency at BEP is 89% vs 89% — backward-curved EC parity. 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 LWBE3G-280-EC 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 LWBE3G-280-EC a true drop-in replacement for ebm-papst R3G280?
How does LWBE3G-280-EC 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 in 5 days
Send a quick request — model + quantity + delivery address. Sample unit ships in 1–3 days for field validation. Series production at 15-day lead time after PO.
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