The Danfoss VLT® HVAC Drive FC 111 is a high-efficiency variable speed drive specifically engineered for heating, ventilation, and air conditioning (HVAC) applications. This particular model, FC-111P22KT4P20H4, is a robust 22 kW unit designed for 3-phase 380-480V power systems. It is built to optimize the performance of pumps, fans, and compressors in building management systems, significantly reducing energy consumption and operational costs. Featuring a built-in RFI Class A1/B filter and coated printed circuit boards (PCBs), it ensures reliable operation in demanding environments while minimizing electromagnetic interference. Its compact IP20 chassis design allows for easy integration into control cabinets.