This product is part of the Harmony XB4 - ATEX D range, an offer of Ø 22mm metal pushbuttons, switches and pilot lights for explosive atmosphere. This black pushbutton has a circular head shape with a booted, clear silicon flush push. This offer is specially designed for explosive atmosphere. It is designed for used in dust zone 21-22. This pushbutton with booted clear silicon provides an ergonomic and visual interface for controlling machines. It comes with 1 NO contact with slow-break operation and operates with a spring return mechanism. It has silver alloy contact material. It has a chromium plated metal bezal and has a 22mm diameter head. This offer is specially designed for applications in Oil and Gas industry as well as Food and beverage, car gas stations etc. It is an IP66, IP67, IP69 and IP69K rated product and comes with INERIS 04ATEX9004U certification. It is easily installed into a standard 22mm diameter panel cut-outs and connected to control circuits with screw-clamp connections. The Harmony XB4 range offers innovative features for simple and efficient use. The Harmony XB4 - ATEX is the most comprehensive explosive Atmospheres range covering most applications.