Description
The ebmpapst K3G250-RR03-H4 is a high-performance 230VAC EC Centrifugal Fan with an impeller size of 250 mm, specifically engineered for demanding thermal management in industrial frequency converters and electrical control cabinets. This unit is a certified OEM replacement part (Siemens NO: A5E37084747). Driven by a robust single-phase M3G084-DF external rotor motor with integrated electronics providing a power consumption of 245.0 W and a nominal current of 1.1 A at 230VAC/50/60 Hz, this precision unit operates at a rated speed of 2900 RPM, delivering a powerful airflow for efficient heat extraction. Constructed with a 7-blade PA plastic impeller with a galvanized sheet-metal plate featuring high-precision ball bearings and a die-cast aluminum housing, this 11.8 kg unit provides a dependable and energy-efficient air-moving solution with an overall efficiency of 46.8% and IP55 protection, ensuring maximum cooling performance and long-term mechanical stability with integrated RS-485 MODBUS-RTU and active PFC for high-power inverters, variable frequency drives (VFD), and integrated electrical switchgear systems at the end.
K3G250-RR03-H4 Fan Parameters
Model Number: K3G250-RR03-H4
OEM Part Number: Siemens A5E37084747
Manufacturer: ebmpapst
Motor Model: M3G084-DF
Type: EC Centrifugal Fan
Impeller Size: 250 mm
Weight: 11.8 kg
Bearing Type: Ball bearing
Nominal Voltage: 230 VAC
Voltage Range: 200 – 277 VAC
Frequency: 50 / 60 Hz
Max. Power Consumption: 245 W
Max. Current Draw: 1.1 A
Rated Speed: 2900 RPM
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)
Working Air Flow: 705.0 m³/h
Static Pressure Increase: 486 Pa
Overall Efficiency: 46.8%
Efficiency Grade: N 64
Specific Ratio: 1.01
Variable Speed Drive: Yes
Control Input: 0-10 VDC / PWM / RS-485 MODBUS-RTU
Key Technical Features: Active PFC, Integrated PID controller, Power limiter, Soft start, Alarm relay
Motor Protection: Thermal overload protection, Line undervoltage / Phase failure detection
Insulation Class: Class F
Environmental Protection Class: H1
Electrical Hookup: Via terminal box
Number of Blades: 7
Direction of Rotation: Clockwise, viewed toward rotor
Impeller Material: PA plastic, galvanized sheet-metal plate
Rotor Surface: Painted black
Electronics Housing: Die-cast aluminum, painted black
Support/Inlet Nozzle: Sheet steel, galvanized
Guard Grille: Steel, phosphated and coated with black plastic (RAL 9005)
Operation Mode: S1 (Continuous operation)
Touch Current (IEC 60990): <= 3.5 mA
Operating Temperature: -25 – +60 °C
Storage Temperature: -40 – +80 °C
Degree of Protection: IP55
Standard Compliance: EN 61800-5-1; CE
Approval Agency: UL 1004-7; CSA C22.2 No.77; EAC
Application
The ebmpapst K3G250-RR03-H4 EC fan is primarily utilized in industrial frequency converters (such as Siemens SINAMICS series), power inverters, and electrical control cabinet heat dissipation systems.
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