Allen-Bradley 800T-J4403B Keyed Selector Switch

The Allen-Bradley 800T-J4403B Keyed Selector Switch is a three-position, key-operated control in the 800T family, designed for panel installation in industrial automation to provide secure, operator-restricted mode selection. It uses a KB7 cam and a standard contact configuration to support common control circuits, with maintained, lockable action so the selected position remains in effect until the key is used to change it. Rated for up to 600 V, the switch is built to withstand typical industrial environments and is compatible with the 800T accessory ecosystem, including mounting hardware and compatible contact blocks. This model is well-suited for applications such as selecting machine modes (manual versus automatic), sequencing actions across a production line, or enabling specific process steps in conveyors, presses, and packaging systems, where a keyed selector helps prevent unauthorized changes and ensures repeatable operation. The 800T-J4403B designation identifies a 3-position keyed selector in the 800T lineup, offering a compact 30 mm-class operator style that fits standard 30 mm panels and works with a KB7 cam for predictable actuation.