Siemens Push-Button Switches Pushbutton 613506 - Siemens 3SU11500AB401BA0, The Siemens 3SU1150-0AB40-1BA0 is a green pushbutton with a glossy steel front ring designed for efficient and reliable switching tasks. It is typically used in industrial control panels for activating machine operations or processes. This high-quality component is suitable for both new installations and upgrades in existing systems. Siemens 3SU11500AB401BA0 SIRIUS ACT pushbutton green metal 22mm round