Allen-Bradley 800T-H4816 Key Operated Locking Switch

The Allen-Bradley 800T-H4816A Key-Locking 30 mm selector switch is a two-position, key-operated control device for panel-mounted applications. It features a cylinder lock with a removable key (T115) and provides a single normally open and a single normally closed contact in its 2-position configuration. Part of the 800T family, this 30 mm (1.18 in) operator suits control panels and machine interfaces where the operator must lock the switch in a specific state to prevent unauthorized changes. Typical applications include function selection, sequencing, and safety-related control points on industrial equipment, where the locking mechanism helps ensure that the chosen state remains engaged until the proper key is used. The device is built for rugged industrial environments consistent with Allen-Bradley components, and is identified by the H4816 family code, ensuring compatibility with standard 30 mm pushbutton/selector switch mounting and backend contact blocks. The 800T-H4816A mounts in standard 30 mm panel cutouts and integrates with 800T contact blocks to realize its NO/NC circuits, enabling reliable integration into control circuits and safety interlocks on automated lines.