The SQM40.245A21 is a Siemens actuator. Specifically, it is an actuator from the SQM series, designed for controlling and positioning dampers and valves in various industrial applications. Siemens SQM actuators are commonly used in heating, ventilation, and air conditioning (HVAC) systems, as well as in combustion processes and other industrial automation applications.

The SQM40.245A21 actuator features a servo motor design, which provides precise and reliable control of the attached damper or valve. It typically operates on a 230V AC power supply and is equipped with a range of advanced features, such as adjustable stroke and speed control, position feedback, and integrated communication interfaces for remote operation and monitoring.

Siemens SQM actuators are known for their durability, high performance, and compatibility with various control systems. They are often used in conjunction with Siemens burner controls or other automation systems to ensure accurate and efficient operation of industrial processes.