Schneider Electric XB5AS8444 Emergency stop switching off, plastic, red mushroom Ø40, Ø22, trigger latching turn to release, 2NC. This Harmony XB5, emergency stop 40mm mushroom head modular red push button operates with a latched-turn-to-release mechanism and uses screw clamp terminals. This emergency stop / shutdown button, also called EMS (Emergency Machine Stop) and EMO (Emergency Off) is easily installed into standard 22mm diameter cut-outs and connected with simple screw-clamp connections. It is clearly distinguishable visually at a distance thanks to a clear color and a prominent 40mm mushroom shape. 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 emergency switching off 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: Emergency switching off push-button; Device short name: XB5; Bezel material: Dark grey plastic; Fixing collar material: Plastic; Head type: Standard; Mounting diameter: 22 mm; Sale per indivisible quantity: 1.