The York S1-6112154 15HP Variable Frequency Drive Controller is an OEM motor control device designed to regulate AC motor speed in compatible HVAC equipment. Operating at 480V, three-phase, and 18.9A, it adjusts the frequency and voltage supplied to the motor for precise speed control. This VFD is used in York rooftop units, air handlers, and other HVAC systems with variable-speed fan... https://www.partshnc.com/s1-6112154-york-15hp-variable-frequency-drive-controller-480v-3ph-18-9a