The Schneider Electric Harmony XB4 ZB4BS844 is a robust emergency stop button head designed for industrial control applications. This genuine Schneider Electric component features a vibrant red 40mm mushroom-shaped actuator and a durable chrome-plated metal bezel, ensuring high visibility and longevity. It requires a standard 22mm mounting cutout for installation and is equipped with a mechanical latching mechanism that resets by turning the button. Part of the Harmony XB4 range, this head offers reliable performance and is ideal for integration into control panels requiring a secure and easily identifiable emergency stop function.