Schneider Electric Harmony XB5 Series Key Release Emergency Stop Push Button, Panel Mount, 22mm Cutout, SPDT;XBA5AS9445 Emergency Stop Push Button by Schnider Electric, 22 mm mounting diameter and 40 mm red mushroom shape make it easy to identify. With a 300000 durability cycle and vibration/shock resistance, this push button is built to last. Features include a plastic bezel and fixing collar, trigger action and mechanical latching, and 1 NO plus 1 NC contacts with slow break.