XB4/ZB4 22mm push buttons are for industrial applications. XB4/ZB4 operators have chromium plated metal bezels that connect to a fully metal mounting collar. Operator is a turn to release push button with a 40mm red mushroom button. The operator has one normally closed contact. Contact has UL A600, UL Q600, IEC AC15 and IEC DC13 contact ratings. The mushroom button is NEMA 4, 4X and 13 rated. Turn to release mushroom button is 1.85 inches tall, 1.57 inches wide and 3.23 inches deep. The push button assembly weighs 0.26 lbs. This point of purchase product is packaged in a blister pack. Push button is UL Listed and CSA certified