FC-101P11KT4E20H4 Danfoss
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The Danfoss FC-101P11KT4E20H4 belongs to the VLT FC 101 HVAC Basic Drives series and is rated for 11 kW or 15 HP. This three phase drive operates on 380 to 480 VAC mains voltage and has IP20 chassis protection. It features an RFI class A1 (C2) filter.
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Product Description:
The FC-101P11KT4E20H4 is an AC variable-frequency drive manufactured by Danfoss as part of the VLT FC 101 HVAC Basic Drives series. In ventilation, pumping, or compressor loops, it modulates induction-motor speed so building-automation controllers can match airflow or pressure to real-time demand instead of running equipment at full speed continuously. That operating method helps reduce power drawn from the mains, softens mechanical stress on belts, bearings, and couplings, and gives the controlled system smoother response during load changes. By adjusting motor speed to the process requirement, the drive also reduces losses in systems that would otherwise depend on fixed-speed operation and mechanical restriction.
The drive supplies up to 15 HP of mechanical output. Its input bridge accepts 380 – 480 VAC from a facility's low-voltage network, and the converter is built for three-phase distribution, which suits standard commercial and industrial power systems. Internally, the power section is rated for 11 kW, while the chassis carries an IP20 / Chassis protection level. Touch-safe terminals are provided, but the unit should still be mounted inside a ventilated control panel to help keep moisture, debris, and conductive dust away from energized parts. This output range is suitable for air handlers, pumps, and similar HVAC equipment that benefits from continuous speed control rather than simple across-the-line motor starting.
An integrated RFI class A1 (C2) filter attenuates conducted emissions so the drive can be used on commercial building feeders without additional line-side hardware in many installations. The controller supports automatic energy optimization, flow compensation, and cascade control, which are useful in HVAC systems where fan or pump demand changes throughout the day. Parameter sets can be transferred through the serial port, allowing operating adjustments to be handled from a connected interface. These control functions are suited to staged loads and variable-demand applications where stable airflow or pressure must be maintained over a wide operating range.
