Allen-Bradley 800T-H31 Industrial Timer Relay

Allen-Bradley 800T-H31 is a 30.5 mm selector switch head from the 800T family, designed for front-panel mounting in industrial control enclosures. The unit is a two-position, maintained selector with a locking feature that uses a left-position key removal (Lock-Left) and includes a standard key (D018). It is specified as a 30.5 mm head with Type 4/13 protection, designed to work with mating contact blocks to complete the electrical circuit, as the head itself specifies No Contacts. This head provides a mechanical operator interface for selecting a function or mode; typical applications include start/stop selection or mode selection in machine control panels, often used with Allen-Bradley contact blocks to construct a complete control station. Its robust 30 mm design fits standard mounting provisions in industrial enclosures and offers a removable-key feature to prevent unauthorized changes.