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 red no guard push button. The operator has one normally open contact. Contact has UL A600, UL Q600, IEC AC15 and IEC DC13 contact ratings. Contacts have screw clamp terminals. Push button has no marking. Push button is 1.85 inches tall, 1.18 inches wide and 2.40 inches deep. Push button weighs 0.18 lbs. Operator is NEMA 4, 4X and 13 rated. Push button UL listed and CSA certified. "This product meets EN/IEC 60947-5-5, CSA C22.2 No 14, EN/IEC 60947-1, EN/IEC 60947-5-1, JIS C8201-5-1, UL 508, EN/IEC 60947-5-4 and JIS C8201-1 standards." "It is installed into a 22mm panel cutout." "Harmony delivers an innovative and ergonomic design that improves the reliability of panels, machines and processes." "The modular range of 22mm metal control and signaling units combine simplicity of installation, modern standard and flush mounted design."