The XB4BT845 is an emergency stop push-button from the Harmony XB4 range, designed for emergency switching off applications. It features a trigger action with mechanical latching, a 40 mm red mushroom head, and is reset by a push-pull action. This device is built with a chromium-plated metal bezel, mounts in a standard 22.5 mm hole, and includes one normally open (NO) and one normally closed (NC) slow-break contact with screw clamp terminals. Key electrical characteristics include a 600V rated insulation voltage and a 10A conventional free air thermal current. Its robust construction provides high durability with 300,000 mechanical cycles and high protection ratings (IP66, IP67, IP69, IP69K), making it suitable for demanding industrial environments.