{"id":27705,"date":"2026-01-20T11:06:43","date_gmt":"2026-01-20T10:06:43","guid":{"rendered":"https:\/\/www.airfal.com\/?p=27705"},"modified":"2026-01-27T20:51:59","modified_gmt":"2026-01-27T19:51:59","slug":"differences-between-atex-zones-and-how-to-choose-the-right-luminaire","status":"publish","type":"post","link":"https:\/\/www.airfal.com\/en\/blog\/differences-between-atex-zones-and-how-to-choose-the-right-luminaire\/","title":{"rendered":"Zones ATEX: differences between 0, 1, 2, 20, 21 and 22 &#8211; zones and how to choose the right luminaire for each one"},"content":{"rendered":"<div class=\"fusion-fullwidth fullwidth-box fusion-builder-row-1 fusion-flex-container has-pattern-background has-mask-background nonhundred-percent-fullwidth non-hundred-percent-height-scrolling\" style=\"--awb-border-radius-top-left:0px;--awb-border-radius-top-right:0px;--awb-border-radius-bottom-right:0px;--awb-border-radius-bottom-left:0px;--awb-flex-wrap:wrap;\" ><div class=\"fusion-builder-row fusion-row fusion-flex-align-items-flex-start fusion-flex-content-wrap\" style=\"max-width:1177px;margin-left: calc(-7% \/ 2 );margin-right: calc(-7% \/ 2 );\"><div class=\"fusion-layout-column fusion_builder_column fusion-builder-column-0 fusion_builder_column_1_1 1_1 fusion-flex-column\" style=\"--awb-bg-size:cover;--awb-width-large:100%;--awb-margin-top-large:0px;--awb-spacing-right-large:3.255%;--awb-margin-bottom-large:0px;--awb-spacing-left-large:3.255%;--awb-width-medium:100%;--awb-order-medium:0;--awb-spacing-right-medium:3.255%;--awb-spacing-left-medium:3.255%;--awb-width-small:100%;--awb-order-small:0;--awb-spacing-right-small:3.255%;--awb-spacing-left-small:3.255%;\"><div class=\"fusion-column-wrapper fusion-column-has-shadow fusion-flex-justify-content-flex-start fusion-content-layout-column\"><div class=\"fusion-text fusion-text-1\"><p>Not all areas of an industrial plant present the same level of risk. Some are subject to extreme conditions where a single spark could trigger a disaster. This is where <a href=\"https:\/\/www.airfal.com\/en\/atex-safety\/atex-information\/\"><strong>ATEX zones<\/strong><\/a> come into play \u2013 an essential classification for anyone working in environments with combustible gases, vapours or dusts.<\/p>\n<p>Choosing the right <strong>luminaire<\/strong> is not just a matter of regulatory compliance, but of operational safety, durability and efficiency. In this article, we explain the practical differences between the most common ATEX zones (1,2, 21 and 22) with a brief reference to zones 0 and 20 and help you identify which type of industrial lighting or <a href=\"https:\/\/www.airfal.com\/en\/atex-safety\/atex-products\/\"><strong>ATEX luminaire<\/strong><\/a> is required in each case.<\/p>\n<h3>What are ATEX Zones and why do they matter?<\/h3>\n<p>The European ATEX Directive (2014\/34\/EU) classifies industrial areas where an explosive atmosphere may occur. Zones are defined according to the type of flammable substance (gas or dust) and the frequency of the risk:<\/p>\n<ul>\n<li><strong>Zones 0, 1 and 2<\/strong>: risk due to gases or vapours<\/li>\n<li><strong>Zones 20, 21 and 22<\/strong>: risk due to combustible dust<\/li>\n<\/ul>\n<p>The lower the zone number, the higher the frequency of risk, and the more demanding the required level of protection. In every case, a <strong>certified ATEX luminaire<\/strong> suitable for the environmental conditions is mandatory.<\/p>\n<h4>Gas Zones: zone 0, 1 and 2<\/h4>\n<p><strong>Zone 0<\/strong>: Risk of permanent presence of an explosive atmosphere. Typical examples include the interior of reactors, pipelines or tanks. Only <strong>intrinsically safe<\/strong> (Ex ia) or fully encapsulated luminaires are permitted, as these are highly <strong>specialized solutions.<\/strong><\/p>\n<p><strong>Zone 1<\/strong>: Risk of frequent presence of an explosive atmosphere under normal operating conditions. Common in refineries, services stations, pumping areas or process zones. <strong>ATEX LED floodlights<\/strong>, <strong>flameproof projectors<\/strong>, <strong>IP66 enclosed luminaires<\/strong> and systems with <strong>Ex d or Ex e protection<\/strong> are used<\/p>\n<p><strong>Zone 2<\/strong>: Risk of an explosive atmosphere occurring infrequently or only under abnormal conditions or installation failures. Found in technical rooms, logistics or maintenance areas. <strong>ATEX tubular luminaires<\/strong>, <strong>linear floodlights or LED workshop lights<\/strong> are installed, always certified for explosive atmospheres.<\/p>\n<h4>Dust Zones: zone 20, 21, 22<\/h4>\n<p><strong>Zone 20<\/strong>: permanent presence of combustible dust in suspension. Common in silos, hoppers or closed conveying systems. Requires <strong>encapsulated, IP6X-rated, flameproof lighting<\/strong> <strong>with materials resistant to dust accumulation.<\/strong><\/p>\n<p><strong>Zone 21<\/strong>: frequent risk during operations such as mixing, milling, packaging or dust transport. <strong>ATEX LED sealed luminaires<\/strong> are used here, offering <strong>protection against dust and moisture<\/strong> and compatibility with high-pressure cleaning.<\/p>\n<p><strong>Zone 22<\/strong>: occasional risk. Found in packaging plants, laboratories, auxiliary rooms or logistics warehouses. The most common solutions include <strong>IP66 luminaires<\/strong>, <strong>industrial workshop lights<\/strong>, <strong>floodlights for fine dust<\/strong> or <strong>ATEX portable lamps <\/strong>for maintenance.<\/p>\n<h3>Key technical criteria for choosing the right ATEX luminaire<\/h3>\n<p>In addition to ATEX zone classification, the following factors must be considered:<\/p>\n<ul>\n<li><strong>Ambient temperature<\/strong>: high \u2013 temperature processes or cold storage require luminaires designed for extreme temperature.<\/li>\n<li><strong>Cleaning frequency<\/strong>: sectors such as food processing or cosmetics often require IP69K protection.<\/li>\n<li><strong>Mounting height and accessibility<\/strong>: long \u2013 life LED solutions reduce maintenance interventions.<\/li>\n<li><strong>Type of substance<\/strong>: gas or dust, each requiring specific protection modes (Ex db, Ex eb\/ec, Ex tb\/tc\u2026)<\/li>\n<li><strong>Lighting control systems. <\/strong><\/li>\n<\/ul>\n<p>An incorrect choice can result in anything from unplanned shutdowns to serious accidents.<\/p>\n<h4>Practical examples by sector<\/h4>\n<ul>\n<li>In <strong>refineries<\/strong>, <strong>high \u2013 power ATEX floodlights<\/strong> with corrosion-resistant housing are used.<\/li>\n<li>In <strong>food processing plants<\/strong>, waterproof luminaires with total protection against dust and moisture.<\/li>\n<li>In <strong>workshops and logistics areas<\/strong>, IP66 linear luminaires and <strong>impact \u2013 resistant ATEX LED luminaires. <\/strong><\/li>\n<li>In <strong>ATEX cold storage areas<\/strong>, IP69K solutions capable of withstanding high \u2013 pressure water cleaning.<\/li>\n<\/ul>\n<h4>Conclusion: not all industrial luminaires are suitable for ATEX zones<\/h4>\n<p>Understanding the differences between zones 0, 1, 2, 20, 21 and 22 is essential for installing a <strong>safe and compliant ATEX lighting system<\/strong>. It is not just about compliance, but about protecting assets, processes and people.<\/p>\n<p>Effective ATEX lighting starts with a solid technical assessment. Because in these environments, light does more than illuminate \u2013 it <strong>prevents risks, protect operations and ensures continuity. <\/strong><\/p>\n<p><img decoding=\"async\" class=\"alignnone wp-image-23160\" src=\"https:\/\/www.airfal.com\/wp-content\/uploads\/2025\/09\/Foto-Ivan-Cid-e1758094310975.jpg\" alt=\"\" width=\"183\" height=\"192\" srcset=\"https:\/\/www.airfal.com\/wp-content\/uploads\/2025\/09\/Foto-Ivan-Cid-e1758094310975-24x24.jpg 24w, https:\/\/www.airfal.com\/wp-content\/uploads\/2025\/09\/Foto-Ivan-Cid-e1758094310975-34x36.jpg 34w, https:\/\/www.airfal.com\/wp-content\/uploads\/2025\/09\/Foto-Ivan-Cid-e1758094310975-46x48.jpg 46w, https:\/\/www.airfal.com\/wp-content\/uploads\/2025\/09\/Foto-Ivan-Cid-e1758094310975-200x209.jpg 200w, https:\/\/www.airfal.com\/wp-content\/uploads\/2025\/09\/Foto-Ivan-Cid-e1758094310975-287x300.jpg 287w, https:\/\/www.airfal.com\/wp-content\/uploads\/2025\/09\/Foto-Ivan-Cid-e1758094310975-400x418.jpg 400w, https:\/\/www.airfal.com\/wp-content\/uploads\/2025\/09\/Foto-Ivan-Cid-e1758094310975-600x628.jpg 600w, https:\/\/www.airfal.com\/wp-content\/uploads\/2025\/09\/Foto-Ivan-Cid-e1758094310975.jpg 652w\" sizes=\"(max-width: 183px) 100vw, 183px\" \/><\/p>\n<p>IV\u00c1N CID \u2013 Engineering and innovation leader<\/p>\n<\/div><\/div><\/div><\/div><\/div>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":5,"featured_media":27729,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[72],"tags":[],"class_list":["post-27705","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>ATEX Zones: Differences Between Luminaires for Zones 0\u201322<\/title>\n<meta name=\"description\" content=\"Understand ATEX zones 0, 1, 2, 20, 21 and 22, and choose the right ATEX lighting for each area to prevent ignition risks and meet compliance.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.airfal.com\/en\/blog\/differences-between-atex-zones-and-how-to-choose-the-right-luminaire\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"ATEX Zones: Differences Between Luminaires for Zones 0\u201322\" \/>\n<meta property=\"og:description\" content=\"Understand ATEX zones 0, 1, 2, 20, 21 and 22, and choose the right ATEX lighting for each area to prevent ignition risks and meet compliance.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.airfal.com\/en\/blog\/differences-between-atex-zones-and-how-to-choose-the-right-luminaire\/\" \/>\n<meta property=\"og:site_name\" content=\"Airfal\" \/>\n<meta property=\"article:published_time\" content=\"2026-01-20T10:06:43+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-01-27T19:51:59+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.airfal.com\/wp-content\/uploads\/2026\/01\/Blog-diferencias-entre-zonas-ATEX-1-1024x582.png\" \/>\n\t<meta property=\"og:image:width\" content=\"1024\" \/>\n\t<meta property=\"og:image:height\" content=\"582\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"author\" content=\"Arantxa\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Arantxa\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"9 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.airfal.com\\\/en\\\/blog\\\/differences-between-atex-zones-and-how-to-choose-the-right-luminaire\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.airfal.com\\\/en\\\/blog\\\/differences-between-atex-zones-and-how-to-choose-the-right-luminaire\\\/\"},\"author\":{\"name\":\"Arantxa\",\"@id\":\"https:\\\/\\\/www.airfal.com\\\/en\\\/#\\\/schema\\\/person\\\/963389207e06402773c9b8ebb13d8e88\"},\"headline\":\"Zones ATEX: differences between 0, 1, 2, 20, 21 and 22 &#8211; 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