FC-301P30KT4131B6461 Danfoss
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The Danfoss FC-301P30KT4131B6461 is a 40 HP automation drive in the VLT FC 301 Automation Drives series, suited for mains voltages from 380 to 480 VAC and three phase power. It offers a power rating of 30 kW, a maximum input current of 55 A at 440 V, and an efficiency of 0.98 at rated current. The drive supports a maximum output frequency of 590 Hz and allows for shielded motor cable lengths up to 50 meters.
Internal Product Review
The FC-301P30KT4131B6461 is a Danfoss VLT FC 301 automation drive rated at 30 kW with a 380 to 480 VAC mains range. High conversion efficiency of 0.98 and a 590 Hz maximum output frequency support precise motor control across demanding speed profiles. Three-phase power architecture makes the unit an excellent choice for industrial panels requiring dependable 40 HP drive performance.
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Product Description:
The FC-301P30KT4131B6461 is an AC variable-frequency drive produced by Danfoss for the VLT FC 301 Automation Drives series. It converts fixed-frequency, three-phase 380–480 VAC mains power into a pulse-width-modulated output that allows control systems to adjust induction motor speed and torque. In conveyors, pumps, and material-handling lines, the unit functions as the power stage that matches motor operation to process demands while helping protect the electrical supply.
The drive supplies 30 kW of continuous mechanical output and presents an apparent input load of 42.3 kVA at 400 V. When supplied with three-phase 440 V power, the rectifier can draw up to 55 A, so upstream protection must accommodate the maximum input current. The acceptable mains range extends from 380 to 480 VAC, with a maximum phase imbalance of 3.0%. Internal monitoring generates an overvoltage warning when the DC link reaches 810 V DC and trips the drive when it reaches 820 V DC. A brake chopper connected across the DC link directs regenerative energy to a resistor during rapid deceleration. This arrangement helps prevent excessive bus voltage when a connected motor returns energy to the drive. The drive uses the parameter structure and fieldbus options available for the VLT AutomationDrive FC platform.
The maximum carrier-based output frequency is 590 Hz, while open-loop flux-mode operation is limited to 300 Hz to control motor core heating. Overall efficiency reaches 0.98 at rated current, reducing waste heat within the enclosure. The output voltage has a rise time of 0.368 µs, and the peak voltage measured with a 5 m cable is 1.270 kV. A dv/dt value of 2.853 kV/µs must be considered when selecting motor winding insulation. The active brake engages when the DC link rises to 778 V DC, allowing surplus energy to flow to the resistor bank. Shielded motor cables may extend up to 50 m, while unshielded motor cables may extend up to 75 m for applications in which the motor is installed remotely. Cable type, length, and routing should account for the drive’s output waveform and the connected motor’s insulation requirements.
