FC-102P11KT4E21H3X Danfoss
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The Danfoss FC-102P11KT4E21H3X is a VLT FC 102 HVAC Drive with a power rating of 11 kW and supports a horsepower of 15 HP. It operates on three phase 380 to 480 VAC mains voltage and is designed for dry room mounting in B, C, D, and E Frame configurations. This drive features IP21, Type 1 protection and includes an RFI Class A1/B filter.
Internal Product Review
The FC-102P11KT4E21H3X is a Danfoss VLT HVAC drive rated at 11 kW and 15 HP. Three-phase 380 to 480 VAC input gives the drive strong compatibility with standard building power infrastructure. IP21 / Type 1 protection and an RFI Class A1/B (C1) filter make the drive a well-finished choice for clean indoor HVAC control.
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Product Description:
The FC-102P11KT4E21H3X variable frequency drive is produced by Danfoss for the VLT FC 102 HVAC Drives series. It controls the speed of centrifugal fans, pumps, and compressors in building automation systems so that air volume and water flow follow actual load conditions. By providing adjustable frequency and voltage to standard induction motors, the unit helps reduce energy consumption and operating noise while maintaining stable climate control. Its control capabilities support applications in electrical rooms, mechanical closets, and other protected indoor locations where HVAC equipment requires variable-speed operation.
The drive has an output rating of 11 kW (15 HP), providing the mechanical power required for compatible HVAC motors. Supply conductors connect to an input range of 380–480 VAC, allowing direct connection to common low-voltage distribution systems without a transformer. The unit uses three-phase input power, which balances current across all three lines, reduces harmonic stress, and supports consistent motor torque. Its IP21 / Type 1 enclosure protects the internal electronics from solid objects larger than 12 mm and from vertically dripping water. This enclosure is suitable for dry, controlled indoor spaces where the drive is not exposed to direct washdown, excessive dust, or outdoor weather.
Electromagnetic compatibility is supported by an integrated RFI Class A1/B (C1) filter, which attenuates conducted emissions on the incoming power supply and can reduce the need for an additional cabinet filter. The drive has no brake chopper, so the motor must decelerate through controlled ramping or another regenerative method provided by the broader system. The mounting arrangement supports dry-room installation with B, C, D, and E frames, providing consistent heat sink orientation and installation options across the applicable frame sizes. Application-oriented functions include flow compensation and fire mode for heating, ventilation, and air-conditioning equipment. These functions allow the drive to regulate fan and pump output in response to changing demand while maintaining stable process conditions.
