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SKU: 6SE6400-7AA00-0AG0

Siemens 6SE6400-7AA00-0AG0 Micromaster 4 Spare Fan Assembly 2

The Siemens 6SE6400-7AA00-0AG0 is a high-performance spare fan assembly for Micromaster 420, 430, and 440 drives. Specifically designed for Frame Size C, this plug-and-play cooling unit ensures optimal thermal regulation and protects your VFD from over-temperature failures in intensive industrial applications.

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Technical Product Overview

The Siemens 6SE6400-7AA00-0AG0 functions as a dedicated cooling solution designed specifically for the Micromaster 4 series of variable frequency drives (VFD). This “Fan Assembly 2” provides the necessary airflow to dissipate heat generated by the power semiconductors during heavy-duty operation. By maintaining optimal thermal conditions, the assembly prevents the drive from entering over-temperature fault states and significantly extends the operational lifespan of the internal electronic components. Its precision-engineered blades and high-quality bearings ensure consistent performance in demanding industrial environments.

Operational Characteristics and Maintenance

This fan assembly features a plug-and-play design that allows for rapid replacement during scheduled maintenance or emergency repairs. Because Siemens optimizes the unit for the Frame Size C (FSC) and similar Micromaster 440 or 430 units, it integrates perfectly into the drive’s housing without requiring mechanical modifications. The assembly includes the fan motor, protective housing, and the specific electrical connector required for direct attachment to the drive’s internal power header. Furthermore, the unit operates with high aerodynamic efficiency, providing maximum cubic feet per minute (CFM) of airflow while maintaining low acoustic noise levels.

Key Technical Specifications

  • Manufacturer: Siemens
  • Model Number: 6SE6400-7AA00-0AG0
  • Product Type: Spare Fan Assembly 2
  • Series Compatibility: Micromaster 420 / 430 / 440
  • Drive Frame Size: Primarily for Frame Size C (FSC)
  • Input Voltage: DC Voltage (supplied by the drive’s internal power circuit)
  • Package Contents: Fan motor, housing frame, and wiring harness
  • Function: Active thermal management and forced air cooling
  • Installation: Tool-less or minimal hardware snap-in mounting
  • Weight:  0.45 kg

Strategic Industrial Applications

Maintenance engineers utilize the 6SE6400-7AA00-0AG0 to restore cooling efficiency to aging or failed inverter units. Consequently, this assembly is critical for the following scenarios:

  • VFD Preventive Maintenance: Replaces worn bearings or clogged fans to prevent catastrophic drive failure in dusty textile or woodworking plants.
  • High-Ambient Temperature Zones: Ensures that drives mounted in outdoor enclosures or near heat-generating machinery remain within safe thermal limits.
  • Critical Process Uptime: Acts as a vital spare part for drives governing essential pumps or conveyor systems where cooling failure could stop production.
  • Facility Retrofitting: Restores the cooling capacity of refurbished Siemens Micromaster units to meet original factory specifications.
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