Schneider Electric XB5AA3351 Push button, plastic, flush, black,Ø22, spring return, marked DOWN ARROW, 1 NO. This Harmony XB5, modular black push button operates with a spring return / impulse mechanism and uses screw clamp terminals. It is marked with a "Down arrow" symbol. This push button provides a simple and robust control to machines and processes. It is easily installed into standard 22mm diameter cut-outs and connected with simple screw-clamp connections. Its schematic is clearly distinguishable visually at a distance thanks to clear colors and markings, minimizing errors during initial wiring and later maintenance operations. 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; Bezel material: Plastic Dark grey plastic; Head type: Standard; Fixing collar material: Plastic; Mounting diameter: 22.5 mm; Sale per indivisible quantity: 1.