K3G280-RR04-H9 ebm-papst Centrifugal Fan

Brand :: ebmpapst

Model:: K3G280-RR04-H9 | ebm-papst 3~380-480V 500W EC Centrifugal Fan for Spindle Motor Cooling

Type:: Centrifugal Fans

Industry:: Automation

Description:: Developed for Spindle Motor Cooling, the ebm-papst K3G280-RR04-H9 is a 380-480V EC backward-curved centrifugal fan, featuring a documented 500 W input rating. This supports duty-point selection.

Datasheet:: K3G280-RR04-H9 | ebm-papst 3~380-480V 500W EC Centrifugal Fan for Spindle Motor Cooling Datasheet (Pdf)

Product Features

Rated Voltage(V)	3`380-480
Size(mm)	280
Input Power(W)	500
Speed(rpm)	2700

Product Features

Reliable Blower

The ebm-papst K3G280-RR04-H9 is an EC centrifugal blower for motor cooling, providing directed airflow in enclosures and cooling assemblies.

Data includes 3`380-480 V operation for matching airflow to system resistance. The datasheet lists ball-bearing support, IP55 protection, PWM/0-10 V/MODBUS speed control for durable motor support. Installed noise depends on the duty point and airflow path. 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-RR04-H9 should be checked for wiring, mounting, duty point and ambient limits before selection. Its documented operating data supports model comparison, replacement planning and purchasing review.

Application Industry

Motor Cooling

The K3G280-RR04-H9 ebm-papst fan is used in industrial motor systems to remove accumulated heat around the motor body, supporting stable duty cycles and reducing thermal stress on nearby components.

Product Insights

AC to EC Replacement — K3G Compact EC Centrifugal

The ebm-papst K3G280-RR04-H9 from the Compact EC Centrifugal series is a direct energy-saving replacement for legacy AC fans including R4D, R2D. Key benefits:

35-50% energy savings — EC motor variable speed matches airflow demand precisely
Identical mm mounting — no ductwork modification needed
0-10V/PWM speed control — integrates with Building Management Systems
40,000+ hour bearing life — double the typical AC fan lifespan

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.

K3G Series Comparison — K3G280-RR04-H9 vs Variants

How the K3G280-RR04-H9 compares to nearby K3G series variants:

Model	K3G097-AK34-43	K3G190-RD45-03	K3G250-AV29-B2	K3G250-PR17-W9
Air Flow	1195 m³/h	524 m³/h	3120 m³/h	2405 m³/h
Power	325 W	169 W	750 W	1160 W
Noise	— dB	— dB	63 dB	— dB
Size	97 mm	190 mm	250 mm	250 mm

All K3G series fans from Hengrui include performance curves, mounting instructions and factory warranty. Contact us for project-specific selection.

Typical Applications — K3G280-RR04-H9 Compact EC Centrifugal

Data Center CRAH/CRAC Units: The K3G280-RR04-H9 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.

Frequently Asked Questions

Which equipment can use the K3G280-RR04-H9?

It is listed for Spindle Motor Cooling. Confirm voltage, duty point, dimensions and mounting against the equipment requirements before selection.

Why choose the K3G280-RR04-H9 for Spindle Motor Cooling?

Its documented 380-480V EC backward-curved centrifugal fan configuration provides a traceable match for projects whose electrical and airflow requirements align with the model data.

What is the representative feature of the K3G280-RR04-H9?

The supplied comparison identifies a documented 500 W input rating; review it together with the other listed ratings rather than as a standalone selection criterion.

What should be inspected if airflow drops on the K3G280-RR04-H9?

Check for blocked airflow paths, incorrect supply, loose wiring, abnormal rotation or system resistance before consulting the exact service documentation.

Related Products

K3G450-PB29-N1/F01 | ebm-papst 3~380-480V 6800W EC Centrifugal Fan for Air Handling

Specified for Air Handling, the ebm-papst K3G450-PB29-N1/F01 is a 380-480V EC backward-curved centrifugal fan, identified by a listed pressure capability of 2,100 Pa. This assists electrical and mechanical review.

K3G560-PC10-N1/F01 | ebm-papst 3~380-480V 5950W EC Centrifugal Fan for Air Handling

Configured for Air Handling, the ebm-papst K3G560-PC10-N1/F01 is a 380-480V EC backward-curved centrifugal fan, with a listed airflow of 21,025 m³/h. It provides a practical sizing reference.

K3G450-PA31-03/G02 | ebm-papst 3~380-480V 4450W EC Centrifugal Fan for Air Handling

Selected for Air Handling, the ebm-papst K3G450-PA31-03/G02 is a 380-480V EC backward-curved centrifugal fan, featuring a listed pressure capability of 1,600 Pa. It supports replacement and design review.

K3G500-PC16-N1/F01 | ebm-papst 3~380-480V 7000W EC Centrifugal Fan for Air Handling

Applied in Air Handling, the ebm-papst K3G500-PC16-N1/F01 is a 380-480V EC backward-curved centrifugal fan, distinguished by a listed pressure capability of 1,800 Pa. The rating clarifies its operating profile.

K3G450-AQ24-01 | ebm-papst 3~380-480V 2730W EC Centrifugal Fan for Air Handling

Designed for Air Handling, the ebm-papst K3G450-AQ24-01 is a 380-480V EC backward-curved centrifugal fan, whose supplied data highlights a documented speed of 2,040 rpm. It provides a practical sizing reference.

K3G280-AU06-B2 | ebm-papst 1~ 200-277V 715W EC Centrifugal Fan for Air Handling

Configured for Air Handling, the ebm-papst K3G280-AU06-B2 is a 200-277V EC backward-curved centrifugal fan, distinguished by a listed acoustic value of 69 dB. The rating aids system-fit checks.

K3G280-RR04-H9 ebm-papst Centrifugal Fan

Product Features

Product Features

Reliable Blower

Application Industry

Motor Cooling

Product Insights

AC to EC Replacement — K3G Compact EC Centrifugal

K3G Series Comparison — K3G280-RR04-H9 vs Variants

Typical Applications — K3G280-RR04-H9 Compact EC Centrifugal

Frequently Asked Questions

Which equipment can use the K3G280-RR04-H9?

Why choose the K3G280-RR04-H9 for Spindle Motor Cooling?

What is the representative feature of the K3G280-RR04-H9?

What should be inspected if airflow drops on the K3G280-RR04-H9?

Related Products

K3G450-PB29-N1/F01 | ebm-papst 3~380-480V 6800W EC Centrifugal Fan for Air Handling

K3G560-PC10-N1/F01 | ebm-papst 3~380-480V 5950W EC Centrifugal Fan for Air Handling

K3G450-PA31-03/G02 | ebm-papst 3~380-480V 4450W EC Centrifugal Fan for Air Handling

K3G500-PC16-N1/F01 | ebm-papst 3~380-480V 7000W EC Centrifugal Fan for Air Handling

K3G450-AQ24-01 | ebm-papst 3~380-480V 2730W EC Centrifugal Fan for Air Handling

K3G280-AU06-B2 | ebm-papst 1~ 200-277V 715W EC Centrifugal Fan for Air Handling

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