The Allen-Bradley A3PLE1-6L4G-10 is an illuminated momentary pushbutton with an extended operator, 120 V ac/dc integral LED, and a single normally open contact block. It belongs to the Bulletin 800T family of 30 mm pilot devices used across control stations, operator panels, and machine interfaces where a maintained visual status indication is needed alongside a momentary switching action.
The 120 V rating on the integral LED matches standard North American control-voltage panels; the green lens signals a run or ready state. The momentary action with one NO contact is typical for a start or reset function. The extended operator (EXTND) projects further from the panel face than a flush operator, making it easier to actuate with a gloved hand or in a crowded enclosure.