R3G250-AK41-71 ebmpapst 230VAC 250mm EC Centrifugal Fan

Description

The ebmpapst R3G250-AK41-71 is a high-performance 200-277 V single-phase GreenTech EC centrifugal fan featuring a 250 mm backward-curved RadiCal impeller made of hot-dip galvanized sheet steel. Driven by the powerful M3G084-DF external rotor motor, this unit achieves a maximum airflow of 1055 m³/h and a high static pressure increase of 689 Pa. Designed for precision industrial cooling, it integrates an RS-485 interface (via 0-10V/PWM control), an alarm relay, and passive PFC for optimized power factor. With its IP54-rated die-cast aluminum electronics housing and 11-blade high-strength design, the R3G250-AK41-71 provides exceptional reliability, soft start-up, and adaptive speed control for demanding thermal management and ventilation applications across an ambient temperature range of -25 °C to 45 °C.

R3G250-AK41-71 Fan Parameters
Model Number: R3G250-AK41-71
Manufacturer: ebmpapst
Motor Model: M3G084-DF
Series: RadiCal EC Centrifugal Series
Type: EC Centrifugal Fan (Backward-Curved)
Impeller Size: 250 mm
Dimensions: 250 x 250 x 147 mm
Bearing Type: Ball Bearing
Nominal Voltage: 230 VAC
Voltage Range: 200 – 277 VAC
Phase: 1~
Frequency: 50 / 60 Hz
Weight: 4.5 kg
Power Consumption: 490 W
Nominal Current: 3.1 A
Speed: 3390 RPM (3395 RPM at peak point)
Max. Air Flow: 62.23 CFM (105.7 m³/h / 1.76 m³/min)
Max. Static Pressure: 9.81 mmH₂O (96.24 Pa / 0.39 inH₂O)
Efficiency Grade (N): 62.6
Overall Efficiency (ηes): 48.6%
Motor Design: Single-phase EC External Rotor Motor
Control Interface: 0-10 VDC / PWM
Technical Features: Integrated PID controller; Soft start; Motor current limitation; Passive PFC; 10 VDC output (max. 1.1 mA); Alarm relay; Line undervoltage detection
Motor Protection: Thermal overload protection for electronics/motor; Thermal switch auto reset
Insulation Class: Class B
Touch Current: <= 3.5 mA
Electrical Hookup: Variable cable
Number of Blades: 11
Direction of Rotation: Clockwise, viewed toward rotor
Impeller Material: Sheet steel, hot-dip galvanized
Electronics Housing Material: Die-cast aluminum
Rotor Surface: Painted black
Installation Position: Shaft horizontal or rotor on top
Condensation Drainage: None
Degree of Protection: IP54
Environmental Protection Class: H1 (Moist – occasional or constantly high humidity)
Operating Temperature: -25 – +45 °C
Standard Compliance: EN 61800-5-1, UKCA, CE
Approval Agency: VDE, CSA C22.2 No. 77, EAC, UL 1004-3, CCC

Application
The ebmpapst R3G250-AK41-71 is used in commercial refrigeration condensers, industrial heat exchangers, air conditioning units, cooling for electrical cabinets, and small-scale ventilation systems.