Schneider Electric XB4-BS8445 Pushbutton Switch

Schneider Electric's Telemecanique XB4-BS8445 emergency stop pushbutton is a 22 mm control device with a 40 mm red mushroom head, mechanical latching, and a turn-to-release reset, designed for fast, failsafe machine shutdown. It provides one normally open plus one normally closed contact, using slow-break operation with a positive opening action, ensuring a clean disconnection of control circuits during an emergency. This pushbutton is intended for installation on control panels, machine tools, conveyors, packaging lines, production lines, and process machinery where reliable personnel and equipment safety is required, and it withstands harsh environments with IP66, IP67, IP69, and IP69K protection ratings and an operating temperature range from -40 °C to +70 °C. Construction details include mounting diameter 22 mm, 40 mm red mushroom head, chromium-plated metal bezel, zamak fixing collar, screw clamp terminals, and dimensions of 47 × 40 × 82 mm; part number XB4BS8445 from the Harmony XB4 family, with common replacements XB5BS8445 and XB4BS84441.