Features:
- Smoothes drive input current, reducing THD, improving power factor, and protecting upstream transformers and breakers.
- Designed for direct mounting adjacent to MICROMASTER 4 FSA drives; IP20 enclosure.
- Approved for North American installations; screw terminals for easy wiring; M5 stud bolt for PE connection.
Variable frequency drives (VFDs) use a diode bridge rectifier to convert AC to DC. This rectifier draws current in short, high‑amplitude pulses – not a smooth sine wave. These pulses cause harmonic distortion in the AC line current, leading to overheating of transformers, nuisance tripping of circuit breakers, distortion of voltage waveform, and interference with other sensitive equipment. The 6SE6400-3CC00-6AD3 is a line commutating choke (also called a line reactor) that installs between the AC supply and the drive input. Its 1.53 mH inductance opposes rapid changes in current, smoothing the rectifier pulses into a more sinusoidal waveform. This reduces the total harmonic distortion (THD) of the input current, typically from over 100% to around 40-50% (depending on load).
The PE (protective earth) connection is an M5 stud bolt, providing a secure, low‑impedance ground path. The screw‑type terminals accept 3 x AWG16 (1.5 mm²) stranded wire, which matches typical VFD input wiring. The maximum cable length on the load side (from choke to drive) is 0.38 m, meaning the choke should be placed close to the drive. For engineers retrofitting harmonic mitigation to an existing MICROMASTER 4 installation, this choke fits seamlessly into the existing mechanical layout.
For drive systems installed in North America, UL or cURus certification is often mandatory. The 6SE6400-3CC00-6AD3 carries cURus approval, meaning it has been tested and certified for use in the US and Canadian markets. This simplifies compliance with local electrical codes (NEC, CEC) and reduces the burden of field approval. The certification covers the electrical insulation, thermal performance, and construction safety. The choke’s IP20 protection class requires installation inside a control cabinet to prevent accidental contact. The screw terminals are designed for copper conductors only (AWG16 / 1.5 mm²).
The 6SE6400-3CC00-6AD3 Siemens Commutating Choke may still be available for purchase and support from Apter Power beyond
End-Of-Life (EOL)by the manufacturer (OEM).
Siemens 6SE6400-3CC00-6AD3 Commutating Choke Manuals,
Datasheets,Drivers,Link
Important Notice:Other accessories,manuals,cables,calibration data,software,etc.are not
included with this equipment unless listed in the above stock item description.All prices are
shown in USD.
Siemens 6SE6400-3CC00-6AD3 Commutating Choke Specs
General
- Manufacturer Siemens
- Model 6SE6400-3CC00-6AD3
- Condition New Original ready stock
- Product Family
6SE6400-3CC00-2AD3,6SE6400-3CC00-8AD3,6SE6400-3TC00-4AD2
Important Notice:Other accessories,manuals,cables,calibration data,software,etc.are not
included with this equipment unless listed in the above stock item description.All prices are
shown in USD.
- Inverter Front-End Protection: Installed at the power input of the inverter to suppress voltage spikes and surges from the power grid.
- Harmonic Interference Reduction: Significantly reduces low-frequency harmonics (especially the 5th and 7th harmonics) generated by the inverter, preventing interference with other sensitive equipment (such as PLCs and sensors) on the same power grid.
- Extended Equipment Lifespan: By smoothing the input current, it reduces the load on the inverter's internal rectifier bridge and DC intermediate circuit capacitors, extending component lifespan.
- Overvoltage Protection: Prevents the inverter from reporting a "F0002 (DC Link Overvoltage)" fault when the power grid experiences voltage surges due to switching operations or lightning strikes.
- Overcurrent Buffer: Limits the peak input current during power grid transients and recovery or drastic load changes, preventing the inverter's overcurrent protection (F0001) from being triggered.
- Heat Check: If the reactor temperature rises abnormally during operation, it usually indicates extremely high harmonic content in the power grid or overload.
- Input Voltage Range: 200V to 280V AC.
- Rated Current: Requires a frequency converter with appropriate power (e.g., MICROMASTER 420/440).Good grounding (PE) must be ensured for optimal shielding and filtering.
- Compatibility: If you are upgrading an older system, please confirm the frequency converter's dimensions (FSA specification).