The ZB5AT84 is a head component for an emergency stop push-button from the Harmony XB5 range, intended for emergency switching off applications. It features a red, unmarked, 40 mm diameter mushroom operator with a trigger action and mechanical latching mechanism that is reset by a push-pull motion. Designed for a standard 22 mm mounting diameter, this plastic head is built for reliability with a mechanical durability of 300,000 cycles. It is suitable for use in demanding industrial environments, offering high protection ratings including IP66, IP67, IP69, and IP69K, and can operate in temperatures ranging from -40 to 70 °C.