Allen-Bradley 800TC-J3812B Lock Selector Switch

Allen-Bradley 800TC-J3812B is a 30.5 mm (1.20 in) diameter lock selector switch from Rockwell Automation’s 800T/800TC family, designed for rugged industrial control panels. Supplied with the attached 800TC-XA contact block, this three-position cylinder-lock selector provides keyed, secure operation across three predefined switch states and carries the catalog designation 800TC-J3812B with the internal reference NE #277150. The unit is specified for Type 4/13 environments, aligning with industrial use in demanding conditions where protection against dust and water infiltration is important. Its 30.5 mm form factor fits standard panel cutouts used for 800T accessories, enabling straightforward mounting alongside other 800T components. In control circuits, the selector marks discrete operating positions, supporting simple mode selection, sequencing, or safety interlock logic, while the integrated cylinder lock helps prevent unauthorized position changes. The included 800TC-XA contact block provides the electrical interface for the connected circuits, reducing wiring complexity within compact control assemblies.