The Cutler Hammer–Eaton C0050E2AFB Transformer is a 50 VA control transformer designed to step down 240/480V input to a stable 120V output for HVAC control circuits. It supplies reliable low-voltage power to components such as furnace controls, air handlers, and packaged units. https://www.partshnc.com/c0050e2afb-cutler-hammer-eaton-240480v-120v-50va-transformer