The 84-5220.0040 is a panel-mounted emergency stop switch featuring a maintained, slow-make switching action. This switch is equipped with one normally closed (NC) contact with gold contact material, a rated operational voltage of 250 VAC/DC, and a switching rating of 1.5A at 250VAC. Designed for durability, it offers a mechanical lifetime of 250,000 cycles and is rated for front protection levels IP65, IP66, and IP67. Compliant with standards such as EN ISO 13850 and EN IEC 60947-5-5, this foolproof switch is suitable for critical safety applications in industrial control systems and machinery.