{"id":7793,"date":"2025-05-19T13:49:56","date_gmt":"2025-05-19T11:49:56","guid":{"rendered":"https:\/\/malux.com\/kunskapsbankinlagg\/what-is-atex\/"},"modified":"2026-02-20T14:22:49","modified_gmt":"2026-02-20T13:22:49","slug":"what-is-atex","status":"publish","type":"kunskapsbankinlagg","link":"https:\/\/www.malux.com\/en\/kunskapsbankinlagg\/what-is-atex\/","title":{"rendered":"What is ATEX?"},"content":{"rendered":"\n<div class=\"wp-block-stackable-columns stk-block-columns stk-block stk-94b0ecf stk-block-background\" data-block-id=\"94b0ecf\"><style>.stk-94b0ecf {background-color:#f5f5f5 !important;padding-top:80px !important;padding-bottom:80px !important;margin-bottom:0px !important;}.stk-94b0ecf:before{background-color:#f5f5f5 !important;}@media screen and (max-width: 767px){.stk-94b0ecf {padding-top:60px !important;padding-bottom:60px !important;}}<\/style><div class=\"stk-row stk-inner-blocks stk-block-content stk-content-align stk-94b0ecf-column\">\n<div class=\"wp-block-stackable-column stk-block-column stk-column stk-block stk-194d026\" data-v=\"4\" data-block-id=\"194d026\"><style>.stk-194d026 {max-width:1024px !important;min-width:auto !important;margin-right:auto !important;margin-left:auto !important;}@media screen and (max-width: 1023px){.stk-194d026 {max-width:90% !important;min-width:auto !important;}}<\/style><div class=\"stk-column-wrapper stk-block-column__content stk-container stk-194d026-container stk--no-background stk--no-padding\"><div class=\"stk-block-content stk-inner-blocks stk-194d026-inner-blocks\">\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-36f6796\" data-block-id=\"36f6796\"><style>.stk-36f6796 {margin-bottom:30px !important;}@media screen and (max-width: 1023px){.stk-36f6796 {margin-bottom:30px !important;}}<\/style><p class=\"stk-block-text__text\">The &#8220;Product Directive&#8221; came into force in 1994, and the &#8220;Work Directive&#8221; came into force in 1999. Someone, probably a Frenchman, summarized these laws with the term ATEX (ATmosphere EXplosible) <\/p><\/div>\n<\/div><\/div><\/div>\n<\/div><\/div>\n\n<div class=\"wp-block-stackable-columns stk-block-columns stk-block stk-66c280c stk-block-background\" data-block-id=\"66c280c\"><style>.stk-66c280c {background-color:#ffdc2e !important;padding-top:80px !important;padding-bottom:80px !important;margin-bottom:0px !important;}.stk-66c280c:before{background-color:#ffdc2e !important;}@media screen and (max-width: 767px){.stk-66c280c {padding-top:60px !important;padding-bottom:60px !important;}}<\/style><div class=\"stk-row stk-inner-blocks stk-block-content stk-content-align stk-66c280c-column\">\n<div class=\"wp-block-stackable-column stk-block-column stk-column stk-block stk-cee340d\" data-v=\"4\" data-block-id=\"cee340d\"><style>.stk-cee340d {max-width:1024px !important;min-width:auto !important;margin-right:auto !important;margin-left:auto !important;}@media screen and (max-width: 1023px){.stk-cee340d {max-width:90% !important;min-width:auto !important;}}<\/style><div class=\"stk-column-wrapper stk-block-column__content stk-container stk-cee340d-container stk--no-background stk--no-padding\"><div class=\"stk-block-content stk-inner-blocks stk-cee340d-inner-blocks\">\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-0200b13\" data-block-id=\"0200b13\"><style>.stk-0200b13 {margin-bottom:30px !important;}@media screen and (max-width: 1023px){.stk-0200b13 {margin-bottom:30px !important;}}<\/style><p class=\"stk-block-text__text\">When there is a risk of an explosive mixture of gas or dust, the facility owner or the party using the premises is obliged to ensure that a classification plan is prepared for that area. This \u201cclassification\u201d then determines the requirements placed on the equipment to be installed within the area. \n\nDepending on how often there is a risk of explosion in the area, it is divided into zones. The heat emitted by installed equipment is a source of ignition for the explosive substance. Therefore, the ignition temperature of the substance and the hottest point of the equipment must not be too close to each other. For this reason, temperature classes must be specified.   <\/p><\/div>\n<\/div><\/div><\/div>\n\n\n\n<div class=\"wp-block-stackable-column stk-block-column stk-column stk-block stk-ccb5762\" data-v=\"4\" data-block-id=\"ccb5762\"><style>.stk-ccb5762 {max-width:1024px !important;min-width:auto !important;margin-right:auto !important;margin-left:auto !important;}@media screen and (max-width: 1023px){.stk-ccb5762 {max-width:90% !important;min-width:auto !important;}}<\/style><div class=\"stk-column-wrapper stk-block-column__content stk-container stk-ccb5762-container stk--no-background stk--no-padding\"><div class=\"stk-block-content stk-inner-blocks stk-ccb5762-inner-blocks\">\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-7105f71\" data-block-id=\"7105f71\"><p class=\"stk-block-text__text\">The speed and pressure of an explosion also vary, which means that the substance\u2019s explosion group must be specified. When the installer then selects equipment\/product, they review the Ex certificate and the product nameplate and choose the version that matches the classification. \n\nHow the marking on the nameplate should appear is determined by the certification and is stated in the Ex certificate. Standards and handbooks are available as guidance for installation and maintenance. <\/p><\/div>\n<\/div><\/div><\/div>\n<\/div><\/div>\n\n<div class=\"wp-block-stackable-columns stk-block-columns stk-block stk-4299fc1 stk-block-background\" data-block-id=\"4299fc1\"><style>.stk-4299fc1 {background-color:#f5f5f5 !important;padding-top:80px !important;padding-bottom:80px !important;margin-bottom:0px !important;}.stk-4299fc1:before{background-color:#f5f5f5 !important;}@media screen and (max-width: 767px){.stk-4299fc1 {padding-top:60px !important;padding-bottom:60px !important;}}<\/style><div class=\"stk-row stk-inner-blocks stk-block-content stk-content-align stk-4299fc1-column\">\n<div class=\"wp-block-stackable-column stk-block-column stk-column stk-block stk-62d2f7e\" data-v=\"4\" data-block-id=\"62d2f7e\"><style>.stk-62d2f7e {max-width:1024px !important;min-width:auto !important;margin-right:auto !important;margin-left:auto !important;}@media screen and (max-width: 1023px){.stk-62d2f7e {max-width:90% !important;min-width:auto !important;}}<\/style><div class=\"stk-column-wrapper stk-block-column__content stk-container stk-62d2f7e-container stk--no-background stk--no-padding\"><div class=\"stk-block-content stk-inner-blocks stk-62d2f7e-inner-blocks\">\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-ae8baa5\" id=\"klassningsplan\" data-block-id=\"ae8baa5\"><h3 class=\"stk-block-heading__text\">Classification plan<\/h3><\/div>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-77edb7e\" data-block-id=\"77edb7e\"><style>.stk-77edb7e {margin-bottom:30px !important;}@media screen and (max-width: 1023px){.stk-77edb7e {margin-bottom:30px !important;}}<\/style><p class=\"stk-block-text__text\">To clearly show where the risk areas are and to document this, it must be possible to see on layout plans and building drawings how these so-called zones extend. The zones\u2014six in total\u2014are marked with lines, squares, and circles on the drawings so that the correct equipment can be selected for a specified installation location. \n\nNote that it is not only in the horizontal plane that it is important to see the zone boundaries, but also vertically. With heavy gases, for example, the lighting may not need to be Ex-rated, while with light gases, it is precisely the lighting that is most important to choose correctly.  <\/p><\/div>\n<\/div><\/div><\/div>\n\n\n\n<div class=\"wp-block-stackable-column stk-block-column stk-column stk-block stk-94e63f5\" data-v=\"4\" data-block-id=\"94e63f5\"><style>.stk-94e63f5 {max-width:1024px !important;min-width:auto !important;margin-right:auto !important;margin-left:auto !important;}@media screen and (max-width: 1023px){.stk-94e63f5 {max-width:90% !important;min-width:auto !important;}}<\/style><div class=\"stk-column-wrapper stk-block-column__content stk-container stk-94e63f5-container stk--no-background stk--no-padding\"><div class=\"stk-block-content stk-inner-blocks stk-94e63f5-inner-blocks\">\n<div class=\"wp-block-stackable-image stk-block-image stk-block stk-749031a\" data-block-id=\"749031a\"><figure><span class=\"stk-img-wrapper stk-image--shape-stretch\"><img loading=\"lazy\" decoding=\"async\" class=\"stk-img wp-image-2529\" src=\"https:\/\/www.malux.com\/wp-content\/uploads\/2025\/05\/klassninsplan_2f42a23b.jpg\" width=\"1000\" height=\"742\" alt=\"shutterstock_60855814_18818b3c\" srcset=\"https:\/\/www.malux.com\/wp-content\/uploads\/2025\/05\/klassninsplan_2f42a23b.jpg 1000w, https:\/\/www.malux.com\/wp-content\/uploads\/2025\/05\/klassninsplan_2f42a23b-300x223.jpg 300w, https:\/\/www.malux.com\/wp-content\/uploads\/2025\/05\/klassninsplan_2f42a23b-768x570.jpg 768w\" sizes=\"auto, (max-width: 1000px) 100vw, 1000px\" \/><\/span><\/figure><\/div>\n<\/div><\/div><\/div>\n<\/div><\/div>\n\n<div class=\"wp-block-stackable-columns stk-block-columns stk-block stk-0193e4a stk-block-background\" data-block-id=\"0193e4a\"><style>.stk-0193e4a {background-color:#f5f5f5 !important;padding-top:80px !important;padding-bottom:80px !important;margin-bottom:0px !important;}.stk-0193e4a:before{background-color:#f5f5f5 !important;}@media screen and (max-width: 767px){.stk-0193e4a {padding-top:60px !important;padding-bottom:60px !important;}}<\/style><div class=\"stk-row stk-inner-blocks stk-block-content stk-content-align stk-0193e4a-column\">\n<div class=\"wp-block-stackable-column stk-block-column stk-column stk-block stk-d5ec95c\" data-v=\"4\" data-block-id=\"d5ec95c\"><style>.stk-d5ec95c {max-width:1024px !important;min-width:auto !important;margin-right:auto !important;margin-left:auto !important;}@media screen and (max-width: 1023px){.stk-d5ec95c {max-width:90% !important;min-width:auto !important;}}<\/style><div class=\"stk-column-wrapper stk-block-column__content stk-container stk-d5ec95c-container stk--no-background stk--no-padding\"><div class=\"stk-block-content stk-inner-blocks stk-d5ec95c-inner-blocks\">\n<div class=\"wp-block-stackable-image stk-block-image stk-block stk-7129218\" data-block-id=\"7129218\"><figure><span class=\"stk-img-wrapper stk-image--shape-stretch\"><img loading=\"lazy\" decoding=\"async\" class=\"stk-img wp-image-2530\" src=\"https:\/\/www.malux.com\/wp-content\/uploads\/2025\/05\/zonatex_811129f5.jpg\" width=\"397\" height=\"563\" alt=\"shutterstock_60855814_18818b3c\" srcset=\"https:\/\/www.malux.com\/wp-content\/uploads\/2025\/05\/zonatex_811129f5.jpg 397w, https:\/\/www.malux.com\/wp-content\/uploads\/2025\/05\/zonatex_811129f5-212x300.jpg 212w\" sizes=\"auto, (max-width: 397px) 100vw, 397px\" \/><\/span><\/figure><\/div>\n<\/div><\/div><\/div>\n\n\n\n<div class=\"wp-block-stackable-column stk-block-column stk-column stk-block stk-5823667\" data-v=\"4\" data-block-id=\"5823667\"><style>.stk-5823667 {max-width:1024px !important;min-width:auto !important;margin-right:auto !important;margin-left:auto !important;}@media screen and (max-width: 1023px){.stk-5823667 {max-width:90% !important;min-width:auto !important;}}<\/style><div class=\"stk-column-wrapper stk-block-column__content stk-container stk-5823667-container stk--no-background stk--no-padding\"><div class=\"stk-block-content stk-inner-blocks stk-5823667-inner-blocks\">\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-9d0aaf0\" id=\"zoner\" data-block-id=\"9d0aaf0\"><h3 class=\"stk-block-heading__text\">ZONES<\/h3><\/div>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-355e695\" data-block-id=\"355e695\"><style>.stk-355e695 {margin-bottom:30px !important;}@media screen and (max-width: 1023px){.stk-355e695 {margin-bottom:30px !important;}}<\/style><p class=\"stk-block-text__text\">Explosive gases:\n\nZone 0 Hazardous area in which an explosive gas atmosphere is present continuously, for long periods, or frequently.\n\nZone 1 Hazardous area in which an explosive gas atmosphere is expected to occur regularly or occasionally during normal operation.\n\nZone 2 Hazardous area in which an explosive gas atmosphere is not expected to occur during normal operation, but if it does, it is only for a short duration.\n\n\nExplosive dust:\n\nZone 20 Hazardous area in which an explosive dust atmosphere is present continuously, for long periods, or frequently.\n\nZone 21 Hazardous area in which an explosive dust atmosphere is expected to occur regularly or occasionally during normal operation.\n\nZone 22 Hazardous area in which an explosive dust atmosphere is not expected to occur during normal operation, but if it does, it is only for a short duration.<\/p><\/div>\n<\/div><\/div><\/div>\n<\/div><\/div>\n\n<div class=\"wp-block-stackable-columns stk-block-columns stk-block stk-7dd1042 stk-block-background\" data-block-id=\"7dd1042\"><style>.stk-7dd1042 {background-color:#f5f5f5 !important;padding-top:80px !important;padding-bottom:80px !important;margin-bottom:0px !important;}.stk-7dd1042:before{background-color:#f5f5f5 !important;}@media screen and (max-width: 767px){.stk-7dd1042 {padding-top:60px !important;padding-bottom:60px !important;}}<\/style><div class=\"stk-row stk-inner-blocks stk-block-content stk-content-align stk-7dd1042-column\">\n<div class=\"wp-block-stackable-column stk-block-column stk-column stk-block stk-8bfbf23\" data-v=\"4\" data-block-id=\"8bfbf23\"><style>.stk-8bfbf23 {max-width:1024px !important;min-width:auto !important;margin-right:auto !important;margin-left:auto !important;}@media screen and (max-width: 1023px){.stk-8bfbf23 {max-width:90% !important;min-width:auto !important;}}<\/style><div class=\"stk-column-wrapper stk-block-column__content stk-container stk-8bfbf23-container stk--no-background stk--no-padding\"><div class=\"stk-block-content stk-inner-blocks stk-8bfbf23-inner-blocks\">\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-27d9eea\" id=\"temperaturklass\" data-block-id=\"27d9eea\"><h3 class=\"stk-block-heading__text\">Temperature class<\/h3><\/div>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-323be7f\" data-block-id=\"323be7f\"><style>.stk-323be7f {margin-bottom:30px !important;}@media screen and (max-width: 1023px){.stk-323be7f {margin-bottom:30px !important;}}<\/style><p class=\"stk-block-text__text\">Flammable substances such as gas, vapour, or dust are divided (classified) into different temperature classes according to their ignition temperature\u2014that is, the lowest temperature at which the substance self-ignites upon contact with a surface. T1 is the lowest class and T6 is the highest class.  \n\nExplosive gases:\nT1 450\u00b0C&lt; ignition temperature for the gas\nT2 300\u00b0C&lt; ignition temperature for the gas &lt;450\u00b0C\nT3 200\u00b0C&lt; ignition temperature for the gas &lt;300\u00b0C\nT4 135\u00b0C&lt; ignition temperature for the gas &lt;200\u00b0C\nT5 100\u00b0C&lt; ignition temperature for the gas &lt;135\u00b0C\nT6 85\u00b0C&lt; ignition temperature for the gas &lt;100\u00b0C\n\n\nExplosive dust:\nWritten in plain text as the number of degrees (e.g., 65\u00b0C)<\/p><\/div>\n<\/div><\/div><\/div>\n\n\n\n<div class=\"wp-block-stackable-column stk-block-column stk-column stk-block stk-6f6e983\" data-v=\"4\" data-block-id=\"6f6e983\"><style>.stk-6f6e983 {max-width:1024px !important;min-width:auto !important;margin-right:auto !important;margin-left:auto !important;}@media screen and (max-width: 1023px){.stk-6f6e983 {max-width:90% !important;min-width:auto !important;}}<\/style><div class=\"stk-column-wrapper stk-block-column__content stk-container stk-6f6e983-container stk--no-background stk--no-padding\"><div class=\"stk-block-content stk-inner-blocks stk-6f6e983-inner-blocks\">\n<div class=\"wp-block-stackable-image stk-block-image stk-block stk-773dd28\" data-block-id=\"773dd28\"><figure><span class=\"stk-img-wrapper stk-image--shape-stretch\"><img loading=\"lazy\" decoding=\"async\" class=\"stk-img wp-image-2531\" src=\"https:\/\/www.malux.com\/wp-content\/uploads\/2025\/05\/atex-fabrik_00eac542.jpg\" width=\"677\" height=\"680\" alt=\"shutterstock_60855814_18818b3c\" srcset=\"https:\/\/www.malux.com\/wp-content\/uploads\/2025\/05\/atex-fabrik_00eac542.jpg 677w, https:\/\/www.malux.com\/wp-content\/uploads\/2025\/05\/atex-fabrik_00eac542-300x300.jpg 300w, https:\/\/www.malux.com\/wp-content\/uploads\/2025\/05\/atex-fabrik_00eac542-150x150.jpg 150w\" sizes=\"auto, (max-width: 677px) 100vw, 677px\" \/><\/span><\/figure><\/div>\n<\/div><\/div><\/div>\n<\/div><\/div>\n\n<div class=\"wp-block-stackable-columns stk-block-columns stk-block stk-80e9608 stk-block-background\" data-block-id=\"80e9608\"><style>.stk-80e9608 {background-color:#ffdc2e !important;padding-top:80px !important;padding-bottom:80px !important;margin-bottom:0px !important;}.stk-80e9608:before{background-color:#ffdc2e !important;}@media screen and (max-width: 767px){.stk-80e9608 {padding-top:60px !important;padding-bottom:60px !important;}}<\/style><div class=\"stk-row stk-inner-blocks stk-block-content stk-content-align stk-80e9608-column\">\n<div class=\"wp-block-stackable-column stk-block-column stk-column stk-block stk-4fa2aa0\" data-v=\"4\" data-block-id=\"4fa2aa0\"><style>.stk-4fa2aa0 {max-width:1024px !important;min-width:auto !important;margin-right:auto !important;margin-left:auto !important;}@media screen and (max-width: 1023px){.stk-4fa2aa0 {max-width:90% !important;min-width:auto !important;}}<\/style><div class=\"stk-column-wrapper stk-block-column__content stk-container stk-4fa2aa0-container stk--no-background stk--no-padding\"><div class=\"stk-block-content stk-inner-blocks stk-4fa2aa0-inner-blocks\">\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-5ae94d0\" id=\"standarder-och-handbocker\" data-block-id=\"5ae94d0\"><h3 class=\"stk-block-heading__text\">Standards and handbooks<\/h3><\/div>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-5677353\" data-block-id=\"5677353\"><style>.stk-5677353 {margin-bottom:30px !important;}@media screen and (max-width: 1023px){.stk-5677353 {margin-bottom:30px !important;}}<\/style><p class=\"stk-block-text__text\">EN IEC 60079-0 General requirements\nEN IEC 60079-1 Exd Flameproof enclosure\nEN IEC 60079-2 Exp Pressurized enclosure\nEN IEC 60079-5 Exq Sand filling\nEN IEC 60079-6 Exo Oil immersion\nEN IEC 60079-7 Exe Increased safety\nEN IEC 60079-11 Exi Intrinsic safety<\/p><\/div>\n<\/div><\/div><\/div>\n\n\n\n<div class=\"wp-block-stackable-column stk-block-column stk-column stk-block stk-41655bf\" data-v=\"4\" data-block-id=\"41655bf\"><style>.stk-41655bf {max-width:1024px !important;min-width:auto !important;margin-right:auto !important;margin-left:auto !important;}@media screen and (max-width: 1023px){.stk-41655bf {max-width:90% !important;min-width:auto !important;}}<\/style><div class=\"stk-column-wrapper stk-block-column__content stk-container stk-41655bf-container stk--no-background stk--no-padding\"><div class=\"stk-block-content stk-inner-blocks stk-41655bf-inner-blocks\">\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-30fa162\" data-block-id=\"30fa162\"><p class=\"stk-block-text__text\">EN IEC 60079-15 Exn Type of protection for Zone 2\nEN IEC 60079-18 Exm Encapsulation\nEN IEC 60079-10 Handbook 426 Classification of hazardous areas\nEN IEC 60079-14 Handbook 427 Design of electrical installations\nEN IEC 60079-17 Handbook 427 Maintenance of electrical installations\nEN IEC 60076-32 Handbook 433 Static electricity in hazardous areas<\/p><\/div>\n<\/div><\/div><\/div>\n<\/div><\/div>\n\n<div class=\"wp-block-stackable-columns stk-block-columns stk-block stk-3dbdbc6 stk-block-background\" data-block-id=\"3dbdbc6\"><style>.stk-3dbdbc6 {background-color:#f5f5f5 !important;padding-top:80px !important;padding-bottom:80px !important;margin-bottom:0px !important;}.stk-3dbdbc6:before{background-color:#f5f5f5 !important;}@media screen and (max-width: 767px){.stk-3dbdbc6 {padding-top:60px !important;padding-bottom:60px !important;}}<\/style><div class=\"stk-row stk-inner-blocks stk-block-content stk-content-align stk-3dbdbc6-column\">\n<div class=\"wp-block-stackable-column stk-block-column stk-column stk-block stk-df6240e\" data-v=\"4\" data-block-id=\"df6240e\"><style>.stk-df6240e {max-width:1024px !important;min-width:auto !important;margin-right:auto !important;margin-left:auto !important;}@media screen and (max-width: 1023px){.stk-df6240e {max-width:90% !important;min-width:auto !important;}}<\/style><div class=\"stk-column-wrapper stk-block-column__content stk-container stk-df6240e-container stk--no-background stk--no-padding\"><div class=\"stk-block-content stk-inner-blocks stk-df6240e-inner-blocks\">\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-2469a95\" id=\"explosionsgrupp\" data-block-id=\"2469a95\"><h3 class=\"stk-block-heading__text\">Explosion group<\/h3><\/div>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-5e0c129\" data-block-id=\"5e0c129\"><style>.stk-5e0c129 {margin-bottom:30px !important;}@media screen and (max-width: 1023px){.stk-5e0c129 {margin-bottom:30px !important;}}<\/style><p class=\"stk-block-text__text\">Flammable substances are classified into explosion group IIA, IIB, or IIC based on the energy with which they can be ignited by sparks and their ability to propagate a flame through a gap. This classification is used to standardize the protective properties of equipment that could normally be an ignition source. Group I refers only to methane\u2013air mixtures in mines. Group II is divided into different subgroups depending on the type of gas mixture, where IIC is the highest-risk group.    <br\/><br\/><strong>Explosive gases:<br\/><\/strong>IIA E.g., propane, butane, kerosene, aviation gasoline, and methane<br\/>IIB E.g., carbon monoxide, ethanol, ethene, and acrylic acid<br\/>IIC E.g., hydrogen, acetylene, and carbon disulfide<br\/><br\/>Dust is classified in a different way.<br\/><br\/><strong>Explosive dust:<br\/><\/strong>IIIA Combustible dust particles larger than 0.5 mm<br\/>IIIB Non-conductive dust particles smaller than 0.5 mm<br\/>IIIC Conductive dust particles<\/p><\/div>\n<\/div><\/div><\/div>\n\n\n\n<div class=\"wp-block-stackable-column stk-block-column stk-column stk-block stk-3c28ea2\" data-v=\"4\" data-block-id=\"3c28ea2\"><style>.stk-3c28ea2 {max-width:1024px !important;min-width:auto !important;margin-right:auto !important;margin-left:auto !important;}@media screen and (max-width: 1023px){.stk-3c28ea2 {max-width:90% !important;min-width:auto !important;}}<\/style><div class=\"stk-column-wrapper stk-block-column__content stk-container stk-3c28ea2-container stk--no-background stk--no-padding\"><div class=\"stk-block-content stk-inner-blocks stk-3c28ea2-inner-blocks\">\n<div class=\"wp-block-stackable-image stk-block-image stk-block stk-363eedb\" data-block-id=\"363eedb\"><figure><span class=\"stk-img-wrapper stk-image--shape-stretch\"><img loading=\"lazy\" decoding=\"async\" class=\"stk-img wp-image-2532\" src=\"https:\/\/www.malux.com\/wp-content\/uploads\/2025\/05\/atex_007cbf1d.jpg\" width=\"537\" height=\"666\" alt=\"shutterstock_60855814_18818b3c\" srcset=\"https:\/\/www.malux.com\/wp-content\/uploads\/2025\/05\/atex_007cbf1d.jpg 537w, https:\/\/www.malux.com\/wp-content\/uploads\/2025\/05\/atex_007cbf1d-242x300.jpg 242w\" sizes=\"auto, (max-width: 537px) 100vw, 537px\" \/><\/span><\/figure><\/div>\n<\/div><\/div><\/div>\n<\/div><\/div>\n\n<div class=\"wp-block-stackable-columns stk-block-columns stk-block stk-33badea stk-block-background\" data-block-id=\"33badea\"><style>.stk-33badea {background-color:var(--jok-font-secondary-color) !important;padding-top:80px !important;padding-bottom:80px !important;margin-bottom:0px !important;}.stk-33badea:before{background-color:var(--jok-font-secondary-color) !important;}@media screen and (max-width: 767px){.stk-33badea {padding-top:60px !important;padding-bottom:60px !important;}}<\/style><div class=\"stk-row stk-inner-blocks stk-block-content stk-content-align stk-33badea-column\">\n<div class=\"wp-block-stackable-column stk-block-column stk-column stk-block stk-b08e386\" data-v=\"4\" data-block-id=\"b08e386\"><style>.stk-b08e386 {max-width:1024px !important;min-width:auto !important;margin-right:auto !important;margin-left:auto !important;}@media screen and (max-width: 1023px){.stk-b08e386 {max-width:90% !important;min-width:auto !important;}}<\/style><div class=\"stk-column-wrapper stk-block-column__content stk-container stk-b08e386-container stk--no-background stk--no-padding\"><div class=\"stk-block-content stk-inner-blocks stk-b08e386-inner-blocks\">\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-2629088\" id=\"utforandeform\" data-block-id=\"2629088\"><style>.stk-2629088 {margin-bottom:30px !important;}.stk-2629088 .stk-block-heading__text{font-size:26px !important;}@media screen and (max-width: 1023px){.stk-2629088 .stk-block-heading__text{font-size:26px !important;}}<\/style><h2 class=\"stk-block-heading__text\">Type of protection<\/h2><\/div>\n\n\n\n<div class=\"wp-block-stackable-columns stk-block-columns stk-block stk-fb50f6d\" data-block-id=\"fb50f6d\"><style>.stk-fb50f6d {margin-bottom:30px !important;}.stk-fb50f6d-column{--stk-columns-spacing:0px !important;--stk-column-gap:60px !important;}@media screen and (max-width: 767px){.stk-fb50f6d {margin-bottom:0px !important;}}<\/style><div class=\"stk-row stk-inner-blocks stk-block-content stk-content-align stk-fb50f6d-column\">\n<div class=\"wp-block-stackable-column stk-block-column stk-column stk-block stk-aba5cfd\" data-v=\"4\" data-block-id=\"aba5cfd\"><div class=\"stk-column-wrapper stk-block-column__content stk-container stk-aba5cfd-container stk--no-background stk--no-padding\"><div class=\"stk-block-content stk-inner-blocks stk-aba5cfd-inner-blocks\">\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-ffe34ea\" data-block-id=\"ffe34ea\"><style>@media screen and (max-width: 1023px){.stk-ffe34ea {margin-bottom:30px !important;}}<\/style><p class=\"stk-block-text__text\">There are several ways to design a product to reduce the risk of explosion when it is to be used in a process.\n\nExd Flameproof enclosure. The enclosure is manufactured robustly enough to withstand an internal explosion without spreading the hot gases outside the enclosure. \n\nExp Pressurized enclosure. Overpressure with clean air must always be maintained within the enclosure to prevent gases or dust from entering from the outside. \n\nExq Sand filling. The ignition source, e.g., a contact, is surrounded by small sand grains, which cool the hot gases on their way out. \n\nExo Oil immersion. The product, e.g., a transformer, is completely surrounded by oil that insulates it from the ambient air. <\/p><\/div>\n<\/div><\/div><\/div>\n\n\n\n<div class=\"wp-block-stackable-column stk-block-column stk-column stk-block stk-f93745a\" data-v=\"4\" data-block-id=\"f93745a\"><div class=\"stk-column-wrapper stk-block-column__content stk-container stk-f93745a-container stk--no-background stk--no-padding\"><div class=\"stk-block-content stk-inner-blocks stk-f93745a-inner-blocks\">\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-6211ca0\" data-block-id=\"6211ca0\"><style>@media screen and (max-width: 1023px){.stk-6211ca0 {margin-bottom:30px !important;}}<\/style><p class=\"stk-block-text__text\">Exe Increased safety. For example, a junction box, which should normally not be able to produce any sparks, has been manufactured in an extra safe way with regard to strength and insulation distances. \n\nExi Intrinsic safety. At the beginning of a circuit, there is an energy-limited barrier. The energy is so strictly limited that not even a short circuit is enough to create an explosion in the hazardous area.   \n\nExn Type of protection for Zone 2. Exn is a common designation for various types of protection for Zone 2 (ExnA, ExnC, ExnR, ExnL, and ExnP).  \n\nExm Encapsulation. An electrical coil, for example, can be completely encapsulated and not come into contact with the ambient air.  <\/p><\/div>\n<\/div><\/div><\/div>\n<\/div><\/div>\n<\/div><\/div><\/div>\n<\/div><\/div>\n\n<div class=\"wp-block-stackable-columns stk-block-columns stk-block stk-0877071 stk-block-background\" data-block-id=\"0877071\"><style>.stk-0877071 {background-color:#f5f5f5 !important;padding-top:80px !important;padding-bottom:80px !important;margin-bottom:0px !important;}.stk-0877071:before{background-color:#f5f5f5 !important;}@media screen and (max-width: 767px){.stk-0877071 {padding-top:60px !important;padding-bottom:60px !important;}}<\/style><div class=\"stk-row stk-inner-blocks stk-block-content stk-content-align stk-0877071-column\">\n<div class=\"wp-block-stackable-column stk-block-column stk-column stk-block stk-a92c36d\" data-v=\"4\" data-block-id=\"a92c36d\"><style>.stk-a92c36d {max-width:1024px !important;min-width:auto !important;margin-right:auto !important;margin-left:auto !important;}@media screen and (max-width: 1023px){.stk-a92c36d {max-width:90% !important;min-width:auto !important;}}<\/style><div class=\"stk-column-wrapper stk-block-column__content stk-container stk-a92c36d-container stk--no-background stk--no-padding\"><div class=\"stk-block-content stk-inner-blocks stk-a92c36d-inner-blocks\">\n<div class=\"wp-block-stackable-image stk-block-image stk-block stk-09009dd\" data-block-id=\"09009dd\"><figure><span class=\"stk-img-wrapper stk-image--shape-stretch\"><img loading=\"lazy\" decoding=\"async\" class=\"stk-img wp-image-2533\" src=\"https:\/\/www.malux.com\/wp-content\/uploads\/2025\/05\/shutterstock_391691158_88426d94.jpg\" width=\"1000\" height=\"666\" alt=\"shutterstock_60855814_18818b3c\" srcset=\"https:\/\/www.malux.com\/wp-content\/uploads\/2025\/05\/shutterstock_391691158_88426d94.jpg 1000w, https:\/\/www.malux.com\/wp-content\/uploads\/2025\/05\/shutterstock_391691158_88426d94-300x200.jpg 300w, https:\/\/www.malux.com\/wp-content\/uploads\/2025\/05\/shutterstock_391691158_88426d94-768x511.jpg 768w\" sizes=\"auto, (max-width: 1000px) 100vw, 1000px\" \/><\/span><\/figure><\/div>\n<\/div><\/div><\/div>\n\n\n\n<div class=\"wp-block-stackable-column stk-block-column stk-column stk-block stk-6fe341d\" data-v=\"4\" data-block-id=\"6fe341d\"><style>.stk-6fe341d {max-width:1024px !important;min-width:auto !important;margin-right:auto !important;margin-left:auto !important;}@media screen and (max-width: 1023px){.stk-6fe341d {max-width:90% !important;min-width:auto !important;}}<\/style><div class=\"stk-column-wrapper stk-block-column__content stk-container stk-6fe341d-container stk--no-background stk--no-padding\"><div class=\"stk-block-content stk-inner-blocks stk-6fe341d-inner-blocks\">\n<div class=\"wp-block-stackable-heading stk-block-heading stk-block-heading--v2 stk-block stk-e14e705\" id=\"markning\" data-block-id=\"e14e705\"><h3 class=\"stk-block-heading__text\">Marking<\/h3><\/div>\n\n\n\n<div class=\"wp-block-stackable-text stk-block-text stk-block stk-d8199d8\" data-block-id=\"d8199d8\"><style>.stk-d8199d8 {margin-bottom:30px !important;}@media screen and (max-width: 1023px){.stk-d8199d8 {margin-bottom:30px !important;}}<\/style><p class=\"stk-block-text__text\">The product must have marking that complies with the Ex certificate.<br\/><br\/><strong>It must include:<br\/><\/strong><br\/>&#8211; Manufacturer&#8217;s name and address<br\/>&#8211; Type designation for the product<br\/>&#8211; EX certificate number<br\/>&#8211; Year of manufacture<br\/>&#8211; Type of protection<br\/>&#8211; CE marking with the number of the testing institute for the manufacturing company&#8217;s quality.<\/p><\/div>\n<\/div><\/div><\/div>\n<\/div><\/div>\n","protected":false},"excerpt":{"rendered":"<p>In the 90s, two new laws were enacted, which affect what equipment may be present in &#8230;<\/p>\n","protected":false},"featured_media":7794,"template":"","meta":{"_acf_changed":false},"kunskapsbankskategori":[240],"class_list":["post-7793","kunskapsbankinlagg","type-kunskapsbankinlagg","status-publish","has-post-thumbnail","hentry","kunskapsbankskategori-ex-industry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.7 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>What is ATEX? 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