K3G280-RR03-H4 K3G280-RR04-H9

Overview

The ebm-papst K3G280-RR03-H4 and K3G280-RR04-H9 are high-performance centrifugal fans designed for cooling applications in industrial environments. With a compact design and integrated external rotor motor, these fans are ideal for Siemens inverter systems and other heat-sensitive equipment. Built to handle continuous duty, they provide reliable airflow for efficient heat dissipation.

Key Features

• Backward-curved impeller blades for high efficiency and low noise
• EC motor with integrated electronics and thermal overload protection
• Supports analog 0–10V or PWM speed control
• RS-485 MODBUS-RTU interface for advanced system integration
• Sturdy die-cast aluminum and steel housing with IP55 protection
• Factory settings optimized for inverter cooling systems
• Maintenance-free ball bearings rated for 40,000+ operating hours

Technical Specs

Model: K3G280-RR03-H4 / K3G280-RR04-H9
Voltage: 200–277 VAC (Nominal 230 VAC)
Frequency: 50/60 Hz
Speed: up to 2900 RPM
Airflow: approx. 2100 m³/h
Pressure Increase: 682 Pa
Power Consumption: 460–660 W
Ambient Temp Range: -25°C to +60°C
Ingress Protection: IP55
Certifications: CE, UL, CSA, EAC

Applications

Ideal for Siemens inverter cooling, control cabinet ventilation, HVAC systems, and industrial equipment across sectors such as manufacturing, automotive, chemical processing, and data centers.