The Siemens 6SE6400-7AA00-0AB0 is a replacement fan unit for MICROMASTER 430 and 440 inverters. It operates on 400V 3-phase power to provide critical cooling for Frame Size F drives, ensuring stable thermal management and preventing hardware overheating.
The Siemens 6SE6400-7AA00-0AB0 provides essential thermal regulation for industrial drive systems. This fan unit serves as a dedicated replacement part for MICROMASTER 430 and 440 (MM4) frequency inverters. Specifically, it maintains optimal operating temperatures within Frame Size F (FSF) drive enclosures. Proper cooling prevents the premature failure of sensitive power semiconductors. Consequently, this component ensures the long-term reliability of your motor control infrastructure.
| Feature | Description |
| Brand | Siemens |
| Part Number | 6SE6400-7AA00-0AB0 |
| Compatibility | MICROMASTER 430 / 440 (Frame Size F) |
| Input Voltage | 400V AC |
| Phase | 3-Phase |
| Operating Frequency | 50/60 Hz |
| Rated Current | 0.45A |
| Power Consumption | 180W |
| Dimensions | 72 x 25 x 80 mm |
| Weight | 0.08 kg |
This cooling assembly utilizes a high-performance three-phase asynchronous motor. The motor design facilitates continuous airflow across the drive’s heat sinks. Furthermore, the unit features a compact, vibration-resistant housing. This construction suits the demanding electrical environments found in variable speed drive cabinets. Because the unit uses a standardized mounting interface, installation requires minimal effort. It integrates directly into the drive chassis without secondary control modules. Reliable heat dissipation allows the inverter to operate at its full rated capacity.
Facility managers rely on this unit for proactive maintenance of legacy MM4 drives. Although Siemens has moved toward newer drive families, this fan remains vital for existing installations. It effectively extends the service life of aging power electronics. Regular replacement of the fan unit avoids costly emergency shutdowns. The 6SE6400-7AA00-0AB0 is particularly critical in hot or confined industrial spaces. It provides a cost-effective alternative to complete drive replacement. Keeping this spare on hand ensures rapid recovery from thermal-related faults.
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