Allen-Bradley 800T-NX31A Selector Switch 3 Position

Allen-Bradley 800T-NX31A is a 30.5 mm (1.20 in) diameter, three-position selector switch designed for panel mounting in industrial automation. It provides a main contact arrangement of 1 normally open and 1 normally closed, enabling distinct states in each handle position for signaling, interlocks, or control logic. The device fits standard 30.5 mm panel cutouts and is compatible with the 800T family cam codes and contact blocks, allowing flexible configurations for mode selection or sequencing schemes. With an electrical rating of 10 A at 600 V AC, it can switch typical control circuits and moderate-power loads within a machine or process line. This NX31A variant is part of the historical 800T 30 mm selector switch lineup, and some retailers list this exact catalog number as discontinued, so verify current availability if you’re replacing an existing installation. In practical use, it’s well-suited for applications such as selecting machine modes (e.g., auto/manual/off), enabling subsystems, or coordinating safety interlocks in manufacturing environments, delivering a compact, durable operator with a defined NO/NC path for reliable control signals.