The Schneider Electric (Erie) AT33A000 is a 3-wire floating actuator designed for efficient and precise control of HVAC systems. Operating at 24VAC, it is ideal for managing valves in heating and cooling applications. This actuator provides smooth and reliable performance with floating (incremental) control, allowing for precise positioning. https://www.partshnc.com/at33a000-schneider-electric-erie-24vac3-wire-floating-act