R3G500-FA28-03 ebmpapst 400V 500mm EC Centrifugal Fan

Description

The ebmpapst R3G500-FA28-03 is a high-performance 400 V RadiCal EC centrifugal fan with an impeller size of 500 mm, purpose-built to deliver elite-level thermal cooling in high-resistance airflow paths. This unit features a heavy-duty M3G150-FF brushless EC motor capable of sustaining a massive 2850 W power input to drive its specialized 6-blade PP plastic impeller at a consistent 1900 RPM. Engineered specifically for high-efficiency air displacement in centralized ventilation systems, it achieves a static efficiency of 71.1% while maintaining optimized acoustics for large-scale climate control. The mechanical design relies on a precision-shielded dual ball bearing system and a die-cast aluminum electronics housing to ensure continuous operation in demanding environments. Featuring a sophisticated electronics interface supporting MODBUS-RTU, an integrated PI controller, and configurable I/O, this fan is a critical component for large AHUs, data center cooling, and industrial ventilation where maximum energy efficiency and precise air density are mandatory.

R3G500-FA28-03 Fan Parameters
Manufacturer: ebmpapst
Model Number: R3G500-FA28-03
Motor Model: M3G150-FF
Series: RadiCal
Impeller Size: 500 mm
Type: EC Centrifugal Fan (Backward-curved)
Bearing Type: Ball Bearing
Nominal Voltage: 400 VAC (3-phase)
Voltage Range: 380 – 480 VAC
Frequency: 50 / 60 Hz
Weight: 21.5 kg

[Electrical Data]
Input Power: 2850 W (2.85 kW)
Nominal Current: 4.4 A
Nominal Speed: 1900 RPM
Motor Design: EC Motor (Electronically Commutated)
Control Input: 0-10 VDC / PWM / MODBUS-RTU (RS-485)
Logic Voltage Output: 3.3 – 24 VDC (Pmax = 800 mW)
Motor Protection: Thermal Overload, Locked-Rotor, Phase Failure Detection, Soft Start
Insulation Class: Class F
Moisture Protection: H1
Termination: Terminal Box

[Performance & Acoustics]
Max. Air Flow: 6512.6 CFM (11065.0 m³/h / 184.42 m³/min)
Max. Static Pressure: 101.97 mmH₂O (1000.0 Pa / 4.01 inH₂O)
Sound Power Level: 81.0 dB(A)
Number of Blades: 6
Direction of Rotation: Clockwise (viewed toward rotor)
Airflow Direction: Radial
Overall Efficiency (ηes): 71.1%
Efficiency Grade: N76.8

[Materials & Construction]
Impeller Material: PP Plastic
Rotor Surface: Painted black
Electronics Housing: Die-cast aluminum
Installation Position: Shaft horizontal or rotor on bottom (Rotor on top on request)
Condensation Drainage: Rotor side holes
Degree of Protection: IP55

[Reliability & Safety Standards]
Min. Ambient Temperature: -40 °C
Max. Ambient Temperature: 40 °C
Standard Compliance: EN 61800-5-1, CE
Approval Agency: UL 1004-7, CSA C22.2 No. 77, EAC

Application
The ebmpapst R3G500-FA28-03 centrifugal fan is used in large-scale air handling units, data center cooling systems, industrial cleanroom ventilation, commercial HVAC systems, and high-capacity heat exchangers.