Allen-Bradley 800T-H31 is a 30 mm rotary selector switch from the 800T family designed for panel mounting to provide two-state control in industrial automation. This NO KEY variant indicates that no key is included with this unit, and the H31 code denotes a left-side key-removal option should a key be provided separately. In typical panel applications, it serves as an on/off selector for motor starters, process selection, and safety interlock logic.
