R1G175-RB33-G01 ebmpapst 48V 175mm EC Centrifugal Fan

Description

The ebmpapst R1G175-RB33-G01 is a high-performance 48 V RadiCal EC centrifugal fan with an impeller size of 175 mm, purpose-built to deliver elite-level thermal cooling in high-resistance airflow paths. This unit features a heavy-duty brushless EC motor capable of sustaining a 75.0 W power input to drive its specialized 7-blade glass-fiber reinforced PA plastic impeller at a consistent 3950 RPM. Engineered specifically for high-efficiency air displacement in complex thermal systems, it utilizes a backward-curved design to generate high velocity and pressure without the need for a scroll housing. The mechanical design relies on a precision-shielded dual ball bearing system and a painted black rotor surface to ensure continuous S1 mode operation. Featuring integrated electronics for PWM speed control, a tachometer output, and an IP24 protection rating, this fan is a critical component for telecommunications base stations, networking hardware, and industrial power systems where maximum energy efficiency and precise air density are mandatory.

R1G175-RB33-G01 Fan Parameters
Manufacturer: ebmpapst
Model Number: R1G175-RB33-G01
Series: RadiCal
Impeller Size: 175 mm
Type: EC Centrifugal Fan (Backward-curved)
Bearing Type: Ball Bearing
Nominal Voltage: 48 VDC
Voltage Range: 36.0 – 57.0 VDC
Weight: 0.94 kg

[Electrical Data]
Input Power: 75.0 W
Nominal Current: 1.85 A
Nominal Speed: 3950 RPM
Motor Design: Brushless DC Motor (Electronically Commutated)
Control Input: PWM (Pulse Width Modulation) / 0-10 VDC
Signal Output: FG (Frequency Generator/Tachometer)
Motor Protection: Soft start, Reverse polarity, Locked-rotor, and Over-temperature protection
Insulation Class: Class B
Termination: 4-Lead wires (AWG 22)

[Performance & Acoustics]
Max. Air Flow: 359.0 CFM (610.0 m³/h / 10.17 m³/min)
Max. Static Pressure: 52.01 mmH₂O (510.0 Pa / 2.05 inH₂O)
Sound Power Level: 73.0 dB(A)
Number of Blades: 7
Direction of Rotation: Clockwise (viewed toward rotor)
Airflow Direction: Radial
Mode of Operation: S1 (Continuous operation)

[Materials & Construction]
Impeller Material: PA plastic, glass-fiber reinforced
Rotor Surface: Painted black
Installation Position: Any
Condensation Drainage: None, open rotor
Degree of Protection: IP24

[Reliability & Safety Standards]
Min. Ambient Temperature: -25 °C
Max. Ambient Temperature: 70 °C
Storage Temperature: -40 °C – 80 °C
Life Expectancy (L10): 70,000 hours at 40 °C
Standard Compliance: EN 60950-1, CE
Approval Agency: VDE, UL, CSA

Application
The ebmpapst R1G175-RB33-G01 centrifugal fan is used in telecommunications base stations, networking switches, industrial battery storage systems, server cabinet ventilation, and high-wattage power supply cooling.