Allen-Bradley 800T-J91KQ1B Selector Switch

The Allen-Bradley 800T-J91KQ1B is a 30‑mm, three‑position selector switch with spring-return action, part of Rockwell Automation’s 800T family designed for panel mounting in industrial control systems. It provides four contacts—two normally open and two normally closed—allowing flexible wiring for control logic, such as start/stop or mode selection, depending on the cam configuration. This variant, with the KQ1 cam and white insert, is documented as 800T-J91KQ1B and is typically used in 30‑mm operator assemblies in panel installations. Common applications include operator-driven mode selection on conveyors, presses, and other industrial equipment, where a compact, robust selector switch delivers discrete signals to downstream relays or PLC inputs.