Schneider Electric XB5AP51 Push button, plastic, projecting, yellow, Ø22, spring return, booted, unmarked, 1 NO. This Harmony XB5, clear silicone booted modular yellow push button operates with a spring return / impulse mechanism and uses screw clamp terminals. This silicone booted push button provides a simple solution to comply with hygiene requirement in food, beverage industries as well as healthcare and pharmaceuticals. It is easily installed into standard 22mm diameter cut-outs and connected with simple screw-clamp connections. It is impact resistant, dust resistant, water resistant and vibration resistant thanks to its IP66 / IP67 / IP69 / IP69K, making it ideal for operation in harsh environments. Its plastic bezel makes it ideal for applications requiring good resistance to chemical agents and/or double electrical insulation. This push-button is intended for industrial control panels, machine interfaces, process equipment and maintenance replacement requirements. Official Schneider characteristics include Range of product: Harmony XB5; Product or component type: Push-button; Device short name: XB5; Product compatibility: Not compatible with legend holder; Bezel material: Plastic Dark grey plastic; Head type: Standard; Fixing collar material: Plastic; Mounting diameter: 22.5 mm.