K3G280-RR04-H9 ebmpapst 230VAC 280mm EC Centrifugal Fan

Description

The ebmpapst K3G280-RR04-H9 is a high-performance 230VAC EC Centrifugal Fan with an impeller size of 280 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: A5E37084935). Driven by a robust single-phase M3G084-DF external rotor motor with integrated electronics providing a power consumption of 520.0 W and a nominal current of 2.3 A at 230VAC/50/60 Hz, this precision unit operates at a maximum speed of 2700 RPM, delivering a powerful airflow for efficient heat extraction. Constructed with a 6-blade PP plastic impeller with a galvanized sheet-metal plate featuring high-precision ball bearings and a die-cast aluminum housing, this 16.8 kg unit provides a dependable and energy-efficient air-moving solution with an overall efficiency of 58.6% 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.

K3G280-RR04-H9 Fan Parameters
Model Number: K3G280-RR04-H9
OEM Part Number: Siemens A5E37084935
Manufacturer: ebmpapst
Motor Model: M3G084-DF
Type: EC Centrifugal Fan
Impeller Size: 280 mm
Weight: 16.8 kg
Bearing Type: Ball bearing
Nominal Voltage: 230VAC
Voltage Range: 200 – 277 VAC
Frequency: 50 / 60 Hz
Max. Power Consumption: 520 W
Max. Current Draw: 2.3 A
Rated Speed: 2700 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: 1815.0 m³/h
Static Pressure Increase: 540 Pa
Overall Efficiency: 58.6%
Efficiency Grade: N 72.2
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: 6
Direction of Rotation: Clockwise, viewed toward rotor
Impeller Material: PP 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)
Leakage Current: <= 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 K3G280-RR04-H9 EC fan is primarily utilized in industrial frequency converters (such as Siemens SINAMICS series), power inverters, and electrical control cabinet heat dissipation systems.