Belimo SM24A-S Rotary Actuator 20 Nm 24V AC/DC Open/Close 3-Point

The Belimo SM24A-S is a robust rotary actuator designed for reliable open/close and 3-point control of dampers and valves within HVAC and building automation systems. Operating on a 24V AC/DC power supply, this actuator delivers a torque output of 20 Nm, providing sufficient power to control medium-sized air dampers in ventilation systems, air handling units, and other airflow regulation applications.

Engineered for dependable operation, the SM24A-S offers a running time of 150 seconds for a full 90° rotation, allowing smooth and controlled damper positioning. The actuator also includes an integrated auxiliary switch (1x SPDT), enabling additional control or indication functions such as end position signalling, fan interlocks, or system status feedback.