Schneider Electric XB4BS8442 Emergency Stop Pushbutton

Schneider Electric Harmony XB4BS8442 Emergency Stop Pushbutton is a metal-bodied, red mushroom-head switch designed for immediate machine shutdown in emergencies. It features a 40 mm diameter mushroom head and a 22 mm panel cutout, a trigger-latching turn-to-release action, and a single normally closed (1NC) contact. The pushbutton supports push-in wiring for secure, straightforward connections and is compatible with Harmony XB4 metal push-button ranges as well as Harmony XB5 plastic ranges, enabling compact, stackable emergency-stop configurations. When pressed, it interrupts the controlled circuit to stop the machine; resetting requires a manual twist to release, ensuring the stop condition remains engaged until intentional reset.