The XB5AS8442 is an emergency switching off push-button from the Harmony XB5 series, designed for critical safety applications. It features a 40mm red mushroom head on a plastic body that fits a standard 22mm panel cutout. The operator utilizes a trigger action with mechanical latching, which is reset by turning the head. This unit comes complete with one slow-break, normally closed (1NC) contact block with silver alloy contacts, connected via screw clamp terminals. It offers high mechanical durability of 300,000 cycles and is rated for harsh environments with IP66, IP67, IP69, and IP69K protection. Its robust design and compliance with international standards make it suitable for a wide range of industrial machinery and control panels where reliable emergency stop functionality is required.