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T ype of Protectio nEx Code EPLZone(s) Basic Concept of Protection El ectrical Equ ipm ent G eneral Requirements - All 11 0, 1,2,20,21,22 Intrinsic Safety Non-Electrical Equipment 13 IEC/EN Standard 60079-0 General requirements for all Ex equipment ia ib ic Ga Da Ma Gb Db Mb Gc Dc 0, 20 1, 21 2, 22 60079-11 Limit energy of sparks & surface temperature Increased Safety eb ec Gb Mb Gc 1 2 60079-7 No arcs, sparks or hot surfaces Flame-Proof da db q dc Gb Mb Ga Gc2 0 1 60079-1 Contain the explosion and extinquish the flame Powder-Filled Gb Mb 1 60079-5 Sealed Device nCGc260079-15 Pressurization Pressurized room pxb 2, 22 1, 21 1, 21pyb pzc Gb Db Mb Gb Db Gc Dc 60079-2 60079-13 12 Prevent ingress of explosive atmosphere and limit surface temperature Encapsulation ma mb mc Ga Da Ma Gb Db Mb 0, 20 1, 21 Gc Dc 2, 22 60079-18 Restricted Breathing Liquid Immersion nR ob Gc Gb Mb 2 2 60079-15 Dust-Protected ta tb tc Da Dc 22 20 21 Db 60079-31 Optical Radiation op pr Gb Db Mb 0, 20 1, 21 0, 20op is op sh Ga Da Ma Ga Da Ma 60079-28 Protection against release of optical energy Limitation of optical energy Optical system interlocking Type of Protection Ex Code EPL Zone ISO/IEC and EN Standard Basic Concept of Protection 80079-36 Basic methods & requirements All 11 General Requirements 80079-37 All Constructional Safety Control of Ignition Sources Liquid Immersion All All 0,1,2,20,21,22 0,1,2,20,21,22 0,1,2,20,21,22 0,1,2,20,21,22 80079-37 80079-37 Ignition hazards mitigated by good engineering methods Control equipment fitted to detect malfunctions Enclosure uses liquid to prevent contact with explosive atmospheres Note 11: Evaluation per EN 50303 is additionally required for ATEX, Category M1 Note 12: EN 60079-13 is not part of the ATEX O cial Journal or a UK Designated Standard as of September 2021 oc Gc 60079-6 1 h h h h Protection Concepts [ATEX, IECEx and UKEx] pb 2 1 2pc vc Gb Gc Gc Other Useful Standards Standard Types Area Classification - Gases, Vapors and Mists IEC Standards US & CA standards Area Classification - Combustible Dusts, Fibers, Flyings Electrical Equipment Installation Electrical Equipment Inspection and Maintenance Electrical Equipment Repair and Overhaul Material Characteristics for Gas and Vapor Classification Material Characteristics for Dust Classification IEC 60079-10-1 IEC 60079-10-2 IEC 60079-14 IEC 60079-17 IEC 60079-19 ISO/IEC 80079-20-1 ISO/IEC 80079-20-2 NFPA 497 NFPA 499 NFPA 70 [NEC]/CSA C22.1 [CEC] NFPA 70B - NFPA 497 NFPA 499 Application of Quality Systems for Equipment Manufacture ISO/IEC 80079-34 - Quality Management Systems ISO 9001 ISO 9001 Hazard Level Type of Explosive Atmosphere Continuous Hazard Division 1 Zone 0 / Zone 20 Intermittent Hazard Zone 1 / Zone 21 ‡ Hazard Und er Abnormal Conditions Division 2Zone 2 / Zone 22 Division Schem e Continually present Likely to occur during normal operations Not likely to occur during normal operations, but may occur for short periods North America/ATEX/IECEx/UKEx Note 5: Group E is applicable to Class II Division 1 only Note 6: Methane is a group IIA Gas for non-mining applications spuorG enoZspuorG noisiviDssalC drazaHecnatsbuS Acetylen e Cl ass I Flammable Gases Group AIIC IIB + H2B puorGnegordyH BIIC puorGenelyhtE AIID puorGenaporP AIID puorGenahteM Com bustible M etal Dusts Cl ass II Co m bustib le Dusts Group EIII C BIIIF puorGstsuD suoecanobraC elbitsubmoC Com bustible Dust not in Group E or F (Flour, Grain, Wood, Plastics, Chemicals) Group GIIIB Com bustible Fibers and Flyings Cl ass III Fibe rs and Flyings Not ApplicableIIIA 5 6 14 [IEC 60529] First Number (protect from solid bodies) Second Numb er (protect from water) 0No Protection0No Protection 1Objects> 50mm1Vertical drip 2Objects> 12.5mm2Angled drip 3Objects> 2. 5mm3Spraying 4O bjects> 1. 0mm4Splashi ng 5Dust-Protected5J etting 6Dust-Tight6Powerful jetting 7Tem porary immersion 8Continuous imm e rsion G roupEnvironmentLocatio nTypic al Substance I Gases, Vap ors an d M ists Coa l M i ning Methane (Firedamp) IIA Surface and Ot her Locations Methane Pro pan e, etc. enelyhtEBII IIC Hydro gen, Acetyle ne, etc. IIIA Com bustible Dusts Com bustible Flyings Conductive-noNBIII IIIC Conductive High pressure and temperature water jet 9 Equipment Group ATEX Equipment Category Atmosphere Equipment Protection Level (EPL) Required Protection Performance & Operation I (Mines with Firedamp) M 1Methane & DustVery Hig h Ma Two faults, Rem ain energ ized an d functioning I (Mines with Firedamp) M 2Methane & DustHigh Mb Severe norm al operation, De-energ ize in exp. atm . II (All Other Areas)1G, 1DGas, Vapor, Mist, DustVery HighTwo faults II (All Other Areas)2G, 2DGas, Vapor, Mist, DustHighO ne fault II (All Other Areas)3G, 3DGas, Vapor, Mist, DustLowNormal operation Note 14: Refer to IEC 60034-5 for Ingress Protection of rotating electrical machines IECEx Scheme Manufacturers of Ex equipment can obtain certificates of conformity, accepted at a national level for all countries participating in the IECEx Scheme. A certificate of conformity may be obtained from any certification body accepted into the Scheme. The certificate will attest (1) the equipment design conforms to relevant IEC Standards, and (2) the product is manufactured under a quality control program assessed and registered though a Quality Assessment Report (QAR) by an accredited IECEx Certification Body (ExCB). Intertek has IECEx Testing Laboratories (ExTLs) across North America, Europe, and Asia, and is an IECEx Certification Body (ExCB). For more information visit www.IECEx.com. ATEX, IECEx and UKEx Other CE Directives That May Apply 8 Electromagnetic Compatibility (EMC) Low Voltage 9 Machinery Directive Medical Device Regulation Pressure Equipment Directive (PED) Radio Equipment Directive (RED) Restriction of Hazardous Substances (RoHS) Note 8: Intertek is a provider of evaluation and certification to these directives and their Harmonized Standards, where applicable Note 9: Excludes equipment for use in explosive atmospheres - see ATEX Annex II 1.2.7 2014/30/EU 2014/35/EU 2006/42/EC 2017/745/EU 2014/68/EU 2014/53/EU 2002/95/EC ATEX Directive 2014/34/EU Intertek has the ability to issue ATEX Notified Body certificates, o ering e ciency and speed to market for global manufacturers entering Europe and beyond. Contact Intertek for more information. ATEX, Category Equipment Protection Level Typical Equipment Zone Suitabil it y 1 GG a Zones 0, 1, 2 1 DDa 2 GG b 2 DDb 3 GG c 3 DDc Equipment Category Zone of Use G as, Vapors, & Mis t Dust Category 1Zone 0 , 1 & 2Zone 20, 21 & 22 Category 2Zone 1 & 2Zon e 21 & 22 Category 3Zone 2Zone 22 10 10 M 1 M2 Ma Mb Zones 20, 21, 22 Zones 1, 2 Zones 21, 22 Zone 2 Zone 22 Very high level of protection for mines High level of protection for mines Note 10: Unless the explosion protection risk assessment states otherwise Equipment Categories & Protection Levels ATEX, UKEx Categories vs Zones of Use Max. Surface TemperatureNEC 500/ CEC NEC 505/ IEC - Group II 1T1T 450°C (842°F) 2T2T 300°C (572°F) A2T 280°C (536°F) B2T 260°C (500°F) C2T 230°C (446°F) D2T 215°C (419°F) 3T3T 200°C (392°F) A3T 180°C (356°F) B3T 165°C (329°F) C3T 160°C (320°F) 4T4T 135°C (275°F) A4T 120°C (248°F) 5T5T 100°C (212°F) 6T6T 85°C (185°F) Note 7: For Group I applications (ATEX, IECEx and UKEx only), electrical apparatus has fixed temperature limits of 150°C (where layers of coal dust can form) and 450°C (where coal dust is not expected to form a layer). Temperature Classification 7 Classification of Divisions and Zones Atmosphere Groups Ingress Protection Codes Atmosphere Groups [ATEX, IECEx and UKEx] Equipment Groups [ATEX and UKEx] Zone Scheme Gas/Dust XXXX ‡ Complies with European Directive* Notified Body Number* Atmosphere Group Temperature Class Explosion Protection Protection Type Equipment Protection Level (EPL) II Equipment Group** Ex db IIC T4 Gb Specific Marking for Explosion Protection** Equipment Category** 2 Environment** G *ATEX only (ATEX 2014/34/EU) Typical ATEX, IECEx and UKEx Marking Type of Protectio nEx Code EPLZone 2 Basic Concept of Protection - 0, 1,2,20,21,22 Intrinsic Safety 3 North American Standard ISA/UL/CSA 60079-0 General requirements for all Ex equipment ia ib ic Ga Gb Gc Gc Dc 0, 20 1, 21 2, 22 60079-11 Limit energy of sparks & surface temperature Increased Safety eb Gb 1 No arcs, sparks or hot surfaces Non-Sparking nA* Gc 2 60079-15 Flame-Proof da db q dc Ga Gc 2 0 1 60079-1 Contain the explosion and extinguish the flame Powder-Filled 1 60079-5 Pressurization Pressurized room px py pz 60079-2 C60079-13 / UL 60079-13 Prevent ingress of explosive atmosphere and limit surface temperature Encapsulation ma mb mc 0, 20 1, 21 Gc Dc 2, 22 60079-18 Restricted Breathing Sealed Device nR nC Gc Gc 2 2 60079-15 Dust-Protected ta tb tc Da Dc 22 20 21 Db 60079-31 Optical Radiation op pr Gb Db 0, 20 1, 21 0, 20 op is op sh Ga Da Ga Da 60079-28 Protection against release of optical energy Limitation of optical energy Optical system interlocking Type of Protection Class Division & Zone Basic Concept of Protection Non-Arcing / Non-Incendive † Explosion-Proof † Purge and Pressurization † UL121201, CSA C22.2 No. 213 Dust-Tight † Dust Ignition-Proof † Intrinsic Safety Note 1: In the United States, suitability for equipment in mining applications is per approval by the Mine Safety and Health Administration (MSHA). Intertek can test and evaluate equipment to Alternative Case Resolution Initiative (ACRI) standards or equivalent, per US National Standards, providing test reports for your submittal to MSHA. Note 2: For US Zone Ex Scheme: Zone 0, 1 and 2 “Ex” markings are preceded by “Class I,” and “Ex” is preceded by “A.” Note 3: For associated intrinsically safe apparatus suitable for installation in a hazardous location, the symbol for the type of protection (“ia” or “ib”) is enclosed within square brackets on the marking, e.g., "AEx d [ia] IIC T4." For intrinsically safe apparatus not suitable for installation in a hazardous location, both the symbol “Ex” or “AEx,” and the symbol for the type of protection, “ia” or “ib,” are enclosed within the same square brackets on the marking, e.g., [AEx ia] IIC; in this case, a temperature class is not included. Note 4: Protection type "vc" is not recognized by the NEC * Product standard has removed this type of protection, however, equipment already approved for this protection method is still recognised by the NEC & CEC. † NOTE Intertek has the Custom Panel Builders Program for Hazardous Locations Panels to address these standards. Additionally panels providing intrinsically safe outputs are also included. Protection Concepts [NEC & CEC] 1 Electrical Equipment - Zone "Ex" Scheme Da Db Dc Ga Da Gb Db Gb 60079-7 ec Gc 2 Gb Gb Gb Gc 1, 21 1, 21 2, 22 pb pc vc 4 Gb Gc Gc 1 2 2 Gb Db Ga Da Liquid Immersion oc ob Gc Gb 2 1 60079-6 60079-15 Type North American Standard - - I, II III I - Division 2 Division 1, 2 Zone 2 Zone 22 Energy Limitation, Non-arcing/sparking, Sealing, and Ingress Protection Contain the explosion and extinguish the flame I I Division 1 Zone 1 UL 1203, CSA C22.2 No. 30 I, II I I, II I I, II I Division 1 Zone 1 Division 1 Zone 1 Division 2 Zone 2 X Y Z NFPA 496 Prevent ingress of explosive atmosphere and limit surface temperature II - III - Division 2 Zone 22 Electrical Equipment - Division Scheme and Zone Equivalency Division 1, 2 Zone 22 - UL121201, CSA C22.2 No. 213 II - Division 1 Zone 20, 21 UL 1203, CSA C22.2 No. 25 ISA/UL/CSA C22.2 No.60079-11 UL 913, CSA C22.2 No. 157 I II, III I - Division 1 Division 1 Zone 0 Zone 20 Limit energy of sparks and surface temperature North America - - General Requirements Hazardous Locations & Explosive Atmospheres Guide to Equipment Certification Requirements ABOUT INTERTEK TOTAL QUALITY. ASSURED. Intertek is a leading Total Quality Assurance provider to industries worldwide. Our network of more than 1,000 laboratories and o ces in more than 100 countries, delivers innovative and bespoke Assurance, Testing, Inspection and Certification solutions for our customers' operations and supply chains. Intertek Total Quality Assurance expertise, delivered consistently with precision, pace and passion, enabling our customers to power ahead safely. FOR MORE INFORMATION icenter@intertek.com AMERICAS +1 800 967 5352 (WORLD LAB) EUROPE +44 1372 370900 APAC +852 2173 8888 intertek.com/hazardous-locations Division Scheme Zone Scheme (Gas) Zone Equivalency Scheme Zone Scheme (Dust) Class I Division 1Groups A,B,C,D T4 Hazard Class Area Classification Gas Group Temperature Class Class I Zone 0Groups IIA,IIB,IIC T4 Hazard Class Area Classification Gas Group Temperature Class Class I Zone 0ia Ga Hazard Class Area Classification Gas Group Temperature Class AExIIC T4 Ex Protection Scheme Protection Concept Code Equipment Protection Level (EPL) Zone 20ta Da Area Classification Dust Group Surface Temperature AExIIIC T90 C Ex Protection Scheme Protection Concept Code Equipment Protection Level (EPL) Items in Blue are US Only. For Canada any new installations must be classified using the Zone system, while existing installations may either use Division or be re-classified to Zone. US installations may use either Division or Zone. Intertek has the ability to issue combined ETL certification for the US and Canada, o ering e ciency and speed to market for global manufacturers entering North America. Contact Intertek for more information. Please note, Class I marking has now been removed in NEC 2020. However, product standards still reference this marking. Typical North American Marking 1 2 3, 3R 3S 4, 4X 5 6 6P 12, 12K 1 3 Enclosure Type Ratings [NEC & CEC] TypeAreaBrief Definition Indoor / Outdoor Indoor / Outdoor Indoor / Outdoor Indoor / Outdoor Indoor / Outdoor Indoor Indoor Indoor Indoor Indoor General purpose Protection against angled dripping water Protection against rain, sleet, dirt, snow and windblown dust Protection against rain, sleet, dirt and snow Protection against rain, snow, hose directed water and corrosion Protection against rangled dripping water, dust, fibers, flyings Protection against temporary submersion Protection against prolonged submersion Protection against circulating dust, fibers, flyings Protection against circulating dust, fibers, flyings, seepage UKEx - UK Statutory Instrument 2016 No.1107 Intertek has the ability to issue UKEx and UKExNI Approved Body certificates, for global manufacturers entering the UK. UKEx requirements are currently closely aligned to ATEX requirements. Contact Intertek for more information. UKEx ‡ XXXX is 2575 for Intertek’s Italy Notified Body or 2903 for Intertek's Canadian Notified Body Complies with UKCA Requirements 0359 Visit www.intertek.com/hazardous-locations/resources for more engineering and compliance-related resources. **ATEX and UKEx CompEx Training Basic theory of hazardous areas (2 Days) Ex F Ex01 - Ex04 Ex05 - Ex06 Ex11 Ex12 Ex14 Course Electrical/Instrumentation installation, maintenance & inspection (Gas & Vapours) (5 Days) Electrical/Instrumentation installation, maintenance & inspection (Combustible Dust) (3 Days) Mechanical Competency for EN 13463 Parts 1, 5 and 6 (3 Days) Application Design Engineers (5 Days) Responsible Person (4 Days) Description Ask our HazLoc experts about Global Market Access ‡ Note: Zone 1 and Zone 21 products are not suitable for use in Division 1 areas. Functional Safety Intertek has a Functional Safety Conformity Assessment Program for industrial automated machinery and robotics. This program o ers manufacturers design evaluation, testing, and certification with the Intertek Functional Safety (FS) Mark, to illustrate compliance to rigorous standards assessing product safety and performance. Scan the QR code for more information on Intertek’s Functional Safety program. Note: Courses are available as CompEx qualifications, City and Guilds qualifications or Intertek’s own Certificate of Attendance. Depending on the requirements, training can be delivered at one of our training centers, at the customer’s site or virtually. Note 13: Ex d, Ex p, and Ex t may also be used for non-electrical equipment using 60079 series standards.