

Used in Rail Transit, ebm-papst K3G280-AK54-21 is a 380-480V EC backward-curved centrifugal fan, defined by a listed acoustic value of 61 dB. The value helps verify equipment fit.
| Rated Voltage(V) | 3`380-480 |
|---|---|
| Size(mm) | 280 |
| Max.Pressure(Pa) | 1100 |
| Input Power(W) | 1030 |
| Speed(rpm) | 3400 |
| Noise(db) | 61 |
The ebm-papst K3G280-AK54-21 is an EC centrifugal blower for industrial cooling, providing directed airflow in enclosures and cooling assemblies.
Data includes 3`380-480 V operation and pressure up to 1100 Pa for matching airflow to system resistance. The datasheet lists ball-bearing support, IP54 protection, PWM/0-10 V speed control for durable motor support. Listed noise is 61 dB at the stated test point. Correct electrical selection and clear inlet spacing support efficient cooling, reliable operation and long fan life.
Suitable for OEM engineers, manufacturers and maintenance buyers, the K3G280-AK54-21 should be checked for wiring, mounting, duty point and ambient limits before selection.
The ebm-papst K3G280-AK54-21 from the Compact EC Centrifugal series is a direct energy-saving replacement for legacy AC fans including R4D, R2D. Key benefits:
K3G EC fans operate at V with W rated power. When replacing AC models, wire the 0-10V control signal alongside the standard three-phase power cable.
How the K3G280-AK54-21 compares to nearby K3G series variants:
| Model | K3G097-AK34-43 | K3G190-RD45-03 | K3G250-AV29-B2 | K3G250-PR17-W9 |
|---|---|---|---|---|
| Air Flow | — | — | — | — |
| Power | — W | — W | — W | — W |
| Noise | — dB | — dB | — dB | — dB |
| Size | — mm | — mm | — mm | — mm |
All K3G series fans from Hengrui include performance curves, mounting instructions and factory warranty. Contact us for project-specific selection.
Data Center CRAH/CRAC Units: The K3G280-AK54-21 delivers reliable cooling for Computer Room Air Handling with 24/7 uptime. EC motor enables precise temperature control.
AHU Air Handling: Engineered for integration into Air Handling Units.
Industrial Process Ventilation: Machinery cooling, enclosure ventilation and process air movement. Hengrui provides custom engineering support.
The supplied comparison identifies a listed acoustic value of 61 dB; review it together with the other listed ratings rather than as a standalone selection criterion.
The table lists 61 dB. Use unobstructed airflow, secure mounting and suitable isolation where required.
Control capability and input method must be confirmed in the exact-model datasheet and wiring diagram; do not infer them from the fan family alone.

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