Product Overview

The Siemens 6SE6400-7AA00-0AG0 is a high-efficiency axial cooling solution specifically developed for the thermal regulation of MICROMASTER 430 and 440 variable frequency drives (VFD). As a critical maintenance component, this Fan Assembly 2 ensures that the drive's internal power electronics operate within safe temperature thresholds, preventing premature aging of capacitors and semiconductors. Utilizing advanced aerodynamic engineering from ebm-papst, the unit provides a constant, low-vibration airflow that is essential for maintaining the high availability of Siemens drive systems in 24/7 industrial environments. Its specialized design allows for rapid integration as a direct replacement part, ensuring that machine downtime is kept to an absolute minimum during routine service.

Technical Specifications and Thermal Parameters

The following data outlines the electrical and mechanical profile of the 6SE6400-7AA00-0AG0 cooling module:

• Supply Voltage 24V DC

• Power Consumption 5 Watts (Current draw approximately 0.2A)

• Rotational Velocity 2300 RPM

• Volumetric Airflow 45 CFM (Cubic Feet per Minute)

• Acoustic Pressure 40 dB(A) for quiet industrial operation

• Housing Material High-durability reinforced polymer

• Ingress Protection IP20 rated for cabinet integration

• Operating Range 0°C to +40°C ambient temperature

• Net Weight 0.08 kg

• Device Dimensions 7.2 cm x 2.5 cm x 8.0 cm

• Manufacturing Origin Germany

This assembly is characterized by its energy-efficient motor and precision-balanced blades, which contribute to a long service life and consistent static pressure performance.

Maintenance Utility and Drive Protection Roles

The 6SE6400-7AA00-0AG0 is an indispensable spare part for facilities utilizing the MICROMASTER 430/440 and COMBIMASTER drive families. In the wastewater treatment and HVAC sectors—where MICROMASTER 430 drives often control large centrifugal pumps and fans—this assembly is vital for dissipating the heat generated during continuous modulation. Its low-noise profile makes it particularly suitable for commercial building automation where excessive acoustic interference must be avoided. By providing 45 CFM of targeted cooling, the fan protects the drive's power modules from thermal tripping, especially in compact control cabinets where natural convection is insufficient. For system integrators and maintenance engineers, stocking the 6SE6400-7AA00-0AG0 is a proactive strategy to safeguard the longevity of the inverter's bridge circuits and control electronics, ensuring the drive continues to deliver precise motor regulation without the risk of heat-induced failure.