An electromotoric rotary actuator, also known as an electric rotary drive, is a mechanism designed to control the position and movement of mechanical components. Typically used in industrial applications to control valves, dampers, and other types of machines.

The actuator consists of an electric motor that rotates a drive train which in turn moves the mechanical component. Electric motors can be powered by AC or DC power and can produce precise, repeatable movements that are critical in many industrial applications.

Electromotoric rotary actuators are used in a wide variety of applications, from valve controllers in petrochemical plants, damper controllers in HVAC systems, to robot arm controllers in manufacturing operations. They are key components in many automatic control systems and provide precise and reliable control of mechanical elements such as valves, dampers and motors.