Allen-Bradley 800MS A1A19 Push Button

Allen-Bradley 800MS A1A19 Push Button is a 22 mm green, square flush-head Start pushbutton from Rockwell Automation’s 800M/800MS family. Built for panel mounting, the flush-face profile keeps the control surface smooth and minimizes protrusion in compact enclosures. The A1A19 designation identifies the green Start operator within this series, enabling clear visual cues for start actions in machine-control panels and automation stations. This 22 mm button is designed to be used alongside other 800M-series pushbuttons to form compact operator stations for conveyors, pumps, fans, and general automation equipment where a dedicated Start input is required. It supports standard 22 mm mounting cutouts and pairs with compatible contact blocks and hardware in the 800M family, ensuring consistent fit and wiring simplicity in multi-button layouts. The result is a straightforward Start control that integrates with Rockwell Automation control schemes, providing a familiar, industry-standard component for panel builders and maintenance technicians alike.