Allen-Bradley B53 (BK BL) NSMP pushbutton switch is a manual control button from Allen-Bradley, identified by the B53 model and the BK BL NSMP variant. The BK BL portion of the name specifies the variant of the pushbutton as cataloged by Allen-Bradley. This pushbutton switch serves as a user input device in electrical or automation circuits, commonly employed on control panels to initiate or stop actions and to trigger equipment operations.
