Description
The Siemens Building Technology ASC9.3DU Double Auxiliary Switch is a position-indicating feature used to provide switching feedback for valve actuators in HVAC systems. This unit includes two independently adjustable auxiliary switches with cam settings that allow activation at specific points along the actuator stroke, supporting switching capacities up to 250 VAC at 6 amps for resistive loads. It is designed for compatibility with select Siemens SKD series actuators and integrates directly within the actuator housing. It is used in hydronic or steam valve assemblies, it enables status signaling, sequence control, and improved coordination between system components.
