This variable frequency drive (VFD) base is designed for use with a 460-volt power supply and can handle up to 20 horsepower. It features an N1 rating, indicating that it is suitable for indoor use and provides protection against dust, dirt, and other non-corrosive materials. The VFD base is a crucial component in HVAC systems, allowing for precise control of motor speed and energy consumption. With its reliable performance and durable construction, this VFD base is an excellent choice for HVAC service technicians looking to optimize the efficiency of their systems.