Allen-Bradley 800T-H3123A NSNBC01 is a 30 mm selector switch from Rockwell Automation's 800T family, designed for panel-mounted operator input in industrial equipment. The catalog number 800T-H3123A identifies this specific selector switch, with the NSNBC01 suffix indicating the variant for this model. This 30 mm device is used to allow operators to select modes or functions in a control panel, and is commonly deployed in manufacturing and automation environments to provide tactile, reliable control of machinery. Typical applications include mode selection, start/stop sequencing, and other operator-input functions within industrial control circuits.
