K3G250-PR04-H2 Ebmpapst K3G250-PR04-H2 Centrifugal Fan | 250mm IP55 Industrial Blower | 230V 520W

Ebmpapst K3G250-PR04-H2 Industrial Centrifugal Fan – Comprehensive Technical Description

Professional-Grade Ventilation Solution for Demanding Environments

The Ebmpapst K3G250-PR04-H2 represents the pinnacle of industrial centrifugal fan technology, combining robust construction with intelligent control features. Designed for continuous operation in challenging environments, this 250mm fan delivers exceptional airflow performance while maintaining energy efficiency.

Technical Specifications & Performance:

• Motor Type: M3G084-DF single-phase asynchronous motor
• Voltage: 230V AC (operating range 200-277V AC)
• Speed: 3080 RPM (±10% under load)
• Power Consumption: 520W at maximum load
• Current Draw: 2.3A nominal
• Frequency: 50/60Hz auto-sensing
• Duty Cycle: Continuous operation (S1 duty)
• Weight: 8.5kg (complete assembly)

Advanced Motor & Control System: The fan incorporates a sophisticated control system with multiple protection and monitoring features:

• Integrated PID controller for precise speed regulation
• RS-485 MODBUS-RTU communication interface
• 0-10V DC/PWM control input with SELV isolation
• Active power factor correction (PFC >0.95)
• Soft-start functionality for reduced mechanical stress
• Thermal overload protection for both electronics and motor
• Output signal (10V DC, 10mA max) for system monitoring
• Visual operation/alarm indicators with relay output

Robust Construction Details:

• Impeller: 6-blade design made from durable PP plastic for optimal airflow and corrosion resistance
• Housing: Die-cast aluminum electronics enclosure with IP55 protection
• Structural Components: Galvanized steel support plates and brackets
• Rotor: Painted black surface for enhanced durability
• Bearings: High-quality ball bearings rated for >40,000 hours operation
• Protection Class: IP55 (dust-protected and water jet resistant)

Environmental Specifications:

• Operating Temperature Range: -25°C to +40°C ambient
• Storage/Transport Range: -40°C to +80°C
• Humidity: Designed for H1 environmental class (moderate condensation possible)
• Installation: Horizontal shaft or rotor-down orientation (rotor-up available upon request)
• Condensation Management: Includes drainage holes on rotor side

Safety & Compliance:

• Electrical safety: CE, IEC/EN 61800-5-1 compliant
• North American approvals: C22.2 No.77, CAN/CSA-E60730-1, UL 1004-7
• Insulation class “F” (155°C)
• Touch current <3.5mA (TN systems)
• Internal thermal overload protector (TOP)
• Phase failure and undervoltage detection

Ebmpapst K3G250-PR04-H2 Specialized Applications:

1. Industrial ventilation systems
2. Process cooling in manufacturing
3. HVAC systems for commercial facilities
4. Air handling units
5. Dust extraction systems
6. Equipment cooling in harsh environments

Installation & Maintenance: The K3G250-PR04-H2 is designed for easy integration with standard ductwork systems. Its service-friendly design allows for:

• Simple speed adjustment via control input
• Visual status monitoring through LED indicators
• Predictive maintenance through alarm relay output
• Tool-free access to condensation drainage ports

Performance Advantages: Compared to conventional centrifugal fans, the Ebmpapst K3G250-PR04-H2 offers:

• 15-20% better energy efficiency through active PFC
• 30% longer service life via advanced thermal management
• 50% faster response to load changes with PID control
• Reduced system downtime through comprehensive protection features

Smart Control Integration: The built-in MODBUS-RTU interface enables:

• Remote monitoring of operating parameters
• System integration with building automation
• Data logging for maintenance planning
• Group control of multiple fans

Quality Assurance: Every K3G250-PR04-H2 unit undergoes:

• Full-load performance testing
• Vibration analysis
• Electrical safety verification
• Control system validation

The Ebmpapst K3G250-PR04-H2 centrifugal fan represents an ideal solution for engineers requiring reliable, controllable air movement in industrial applications where performance and durability are critical. Its combination of robust construction and intelligent features makes it particularly suited for modern automated systems requiring networked environmental control.