IDEC Relays ASD211NU 2-Position Selector Switch 30mm

The IDEC Relays ASD211NU 2-Position Selector Switch 30mm is used in systems and industrial control panels for manual circuit selection and equipment control. It allows operators to switch between operating modes such as on/off, auto/manual, or start/stop operations within air handling units, control cabinets, and refrigeration equipment within HVAC systems. The selector switch is commonly placed on panel doors or operator stations where direct access to system controls is required. It works with control circuits by sending input commands to relays, contactors, and other connected components. Its design supports clear operator interaction and consistent switching performance in commercial system applications.