Schneider Electric XB4BT845 is an emergency stop switch from the Harmony XB4 series, designed for immediate machine shutdown in industrial environments. It features a 40mm red mushroom head operator with push-pull reset and 1NO + 1NC slow-break silver alloy contacts, rated for up to 10A IEC and 6A at 120V. The switch measures 1.9 in (47 mm) x 1.6 in (40 mm) x 3.2 in (82 mm), weighs 0.294 lb, and is constructed with a chromium-plated metal bezel for panel mounting in a 22mm cut-out with screw clamp terminals. It complies with multiple international standards including EN/IEC 60947 series, UL 508, CSA C22.2 No.14, and EN/ISO 13850, and is certified by Bureau Veritas, CSA, DNV, and Lloyd's Register. This switch is suitable for industrial, automotive, and commercial applications requiring reliable emergency stop functionality with IP66 and IK03 protection ratings.