The 84-5220.0020 is a foolproof emergency stop switch designed for critical safety applications. It features a non-illuminated, Ø 32 mm red mushroom-head actuator and mounts into a standard Ø 22.3 mm panel cutout. The switch provides a maintained switching action with a single normally closed (1 NC) gold contact and is reset by twisting the actuator. It is rated for an operational voltage of 250 VAC/DC with a thermal current of 5 A. Built for durability, it offers a mechanical lifetime of 250,000 cycles and is sealed to IP65, IP66, and IP67 standards, ensuring reliable performance in demanding industrial environments.