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 red 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 NC 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 IP65 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.