basis string | category string | derived_fields list | id string | iec_designation string | north_american_designation string | source string | source_quote string | url string | verified_fields list | country string | division_or_zone string | hazard_class string | iec_standard string | disagreements list | also_reported list | max_surface_temperature_c string |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Risk gradation | system attribute | [
"category"
] | 3-levels-zone-0-1-2-system-attribute-2-levels-div-1-div-2 | 3 levels (Zone 0, 1, 2) | 2 levels (Div 1, Div 2) | https://exknowledge.com/pages/nec-500-vs-atex-iec.html | Risk gradation | 2 levels (Div 1, Div 2) | 3 levels (Zone 0, 1, 2) | 3 levels (Zone 0, 1, 2) | https://referencesource.org/ex-classification-system-crosswalk/3-levels-zone-0-1-2-system-attribute-2-levels-div-1-div-2/ | [
"basis",
"iec_designation",
"north_american_designation"
] | null | null | null | null | null | null | null |
Flame Proof | protection concept | [
"category"
] | class-i-us-protection-concept-aex-d | null | AEx d | https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf | Flame Proof AEx d US Class I Zone 1 ISA 60079-1 | https://referencesource.org/ex-classification-system-crosswalk/class-i-us-protection-concept-aex-d/ | [
"basis",
"country",
"division_or_zone",
"hazard_class",
"iec_standard",
"north_american_designation"
] | US | Zone 1 | Class I | ISA 60079-1 | null | null | null |
Increased Safety | protection concept | [
"category"
] | class-i-us-protection-concept-aex-e | null | AEx e | https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf | Increased Safety AEx e US Class I Zone 1 ISA 60079-7 | https://referencesource.org/ex-classification-system-crosswalk/class-i-us-protection-concept-aex-e/ | [
"basis",
"country",
"division_or_zone",
"hazard_class",
"iec_standard",
"north_american_designation"
] | US | Zone 1 | Class I | ISA 60079-7 | null | null | null |
Intrinsic Safety | protection concept | [
"category"
] | class-i-us-protection-concept-aex-ia | null | AEx ia | https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf | Intrinsic Safety AEx ia US Class I Zone 0 ISA 60079-11 | https://referencesource.org/ex-classification-system-crosswalk/class-i-us-protection-concept-aex-ia/ | [
"basis",
"country",
"division_or_zone",
"hazard_class",
"iec_standard",
"north_american_designation"
] | US | Zone 0 | Class I | ISA 60079-11 | null | null | null |
null | protection concept | [
"category"
] | us-protection-concept-aex-iad | null | AEx iaD | https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf | AEx iaD US Zone 20 ISA 61241-11 | https://referencesource.org/ex-classification-system-crosswalk/us-protection-concept-aex-iad/ | [
"country",
"division_or_zone",
"iec_standard",
"north_american_designation"
] | US | Zone 20 | null | ISA 61241-11 | null | null | null |
null | protection concept | [
"category"
] | class-i-us-protection-concept-aex-ib | null | AEx ib | https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf | AEx ib US Class I Zone 1 ISA 60079-11 | https://referencesource.org/ex-classification-system-crosswalk/class-i-us-protection-concept-aex-ib/ | [
"country",
"division_or_zone",
"hazard_class",
"iec_standard",
"north_american_designation"
] | US | Zone 1 | Class I | ISA 60079-11 | null | null | null |
Intrinsic Safety | protection concept | [
"category"
] | us-protection-concept-aex-ibd | null | AEx ibD | https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf | Intrinsic Safety AEx ibD US Zone 21 ISA 61241-11 | https://referencesource.org/ex-classification-system-crosswalk/us-protection-concept-aex-ibd/ | [
"basis",
"country",
"division_or_zone",
"iec_standard",
"north_american_designation"
] | US | Zone 21 | null | ISA 61241-11 | null | null | null |
null | protection concept | [
"category"
] | class-i-us-protection-concept-aex-m | null | AEx m | https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf | AEx m US Class I Zone 1 ISA 60079-18 | https://referencesource.org/ex-classification-system-crosswalk/class-i-us-protection-concept-aex-m/ | [
"country",
"division_or_zone",
"hazard_class",
"iec_standard",
"north_american_designation"
] | US | Zone 1 | Class I | ISA 60079-18 | null | null | null |
null | protection concept | [
"category"
] | class-i-us-protection-concept-aex-ma | null | AEx ma | https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf | AEx ma US Class I Zone 0 ISA 60079-18 | https://referencesource.org/ex-classification-system-crosswalk/class-i-us-protection-concept-aex-ma/ | [
"country",
"division_or_zone",
"hazard_class",
"iec_standard",
"north_american_designation"
] | US | Zone 0 | Class I | ISA 60079-18 | null | null | null |
null | protection concept | [
"category"
] | protection-concept-aex-mad | null | AEx maD | https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf | AEx maD Zone 20 ISA 61241-18 | https://referencesource.org/ex-classification-system-crosswalk/protection-concept-aex-mad/ | [
"division_or_zone",
"iec_standard",
"north_american_designation"
] | null | Zone 20 | null | ISA 61241-18 | null | null | null |
null | protection concept | [
"category"
] | class-i-us-protection-concept-aex-mb | null | AEx mb | https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf | AEx mb US Class I Zone 1 ISA 60079-18 | https://referencesource.org/ex-classification-system-crosswalk/class-i-us-protection-concept-aex-mb/ | [
"country",
"division_or_zone",
"hazard_class",
"iec_standard",
"north_american_designation"
] | US | Zone 1 | Class I | ISA 60079-18 | null | null | null |
null | protection concept | [
"category"
] | us-protection-concept-aex-mbd | null | AEx mbD | https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf | AEx mbD US Zone 21 ISA 61241-18 | https://referencesource.org/ex-classification-system-crosswalk/us-protection-concept-aex-mbd/ | [
"country",
"division_or_zone",
"iec_standard",
"north_american_designation"
] | US | Zone 21 | null | ISA 61241-18 | null | null | null |
null | protection concept | [
"category"
] | class-i-us-protection-concept-aex-na | null | AEx nA | https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf | AEx nA US Class I Zone 2 ISA 60079-15 | https://referencesource.org/ex-classification-system-crosswalk/class-i-us-protection-concept-aex-na/ | [
"country",
"division_or_zone",
"hazard_class",
"iec_standard",
"north_american_designation"
] | US | Zone 2 | Class I | ISA 60079-15 | null | null | null |
Enclosed Break | protection concept | [
"category"
] | class-i-us-protection-concept-aex-nc | null | AEx nC | https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf | Enclosed Break AEx nC US Class I Zone 2 ISA 60079-15 | https://referencesource.org/ex-classification-system-crosswalk/class-i-us-protection-concept-aex-nc/ | [
"basis",
"country",
"division_or_zone",
"hazard_class",
"iec_standard",
"north_american_designation"
] | US | Zone 2 | Class I | ISA 60079-15 | [] | null | null |
null | protection concept | [
"category"
] | class-i-us-protection-concept-aex-nr | null | AEx nR | https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf | AEx nR US Class I Zone 2 ISA 60079-15 | https://referencesource.org/ex-classification-system-crosswalk/class-i-us-protection-concept-aex-nr/ | [
"country",
"division_or_zone",
"hazard_class",
"iec_standard",
"north_american_designation"
] | US | Zone 2 | Class I | ISA 60079-15 | null | null | null |
Oil Emmersion | protection concept | [
"category"
] | class-i-us-protection-concept-aex-o | null | AEx o | https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf | Oil Emmersion AEx o US Class I Zone 1 ISA 60079-6 | https://referencesource.org/ex-classification-system-crosswalk/class-i-us-protection-concept-aex-o/ | [
"basis",
"country",
"division_or_zone",
"hazard_class",
"iec_standard",
"north_american_designation"
] | US | Zone 1 | Class I | ISA 60079-6 | null | null | null |
null | protection concept | [
"category"
] | us-protection-concept-aex-pd | null | AEx pD | https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf | AEx pD US Zone 21 ISA 61241-2 | https://referencesource.org/ex-classification-system-crosswalk/us-protection-concept-aex-pd/ | [
"country",
"division_or_zone",
"iec_standard",
"north_american_designation"
] | US | Zone 21 | null | ISA 61241-2 | null | null | null |
null | protection concept | [
"category"
] | class-i-us-protection-concept-aex-px | null | AEx px | https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf | AEx px US Class I Zone 1 ISA 60079-2 | https://referencesource.org/ex-classification-system-crosswalk/class-i-us-protection-concept-aex-px/ | [
"country",
"division_or_zone",
"hazard_class",
"iec_standard",
"north_american_designation"
] | US | Zone 1 | Class I | ISA 60079-2 | null | null | null |
null | protection concept | [
"category"
] | class-i-us-protection-concept-aex-py | null | AEx py | https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf | AEx py US Class I Zone 1 ISA 60079-2 | https://referencesource.org/ex-classification-system-crosswalk/class-i-us-protection-concept-aex-py/ | [
"country",
"division_or_zone",
"hazard_class",
"iec_standard",
"north_american_designation"
] | US | Zone 1 | Class I | ISA 60079-2 | null | null | null |
null | protection concept | [
"category"
] | class-i-us-protection-concept-aex-pz | null | AEx pz | https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf | AEx pz US Class I Zone 2 ISA 60079-2 | https://referencesource.org/ex-classification-system-crosswalk/class-i-us-protection-concept-aex-pz/ | [
"country",
"division_or_zone",
"hazard_class",
"iec_standard",
"north_american_designation"
] | US | Zone 2 | Class I | ISA 60079-2 | null | null | null |
Power Filled | protection concept | [
"category"
] | class-i-us-protection-concept-aex-q | null | AEx q | https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf | Power Filled AEx q US Class I Zone 1 ISA 60079-5 | https://referencesource.org/ex-classification-system-crosswalk/class-i-us-protection-concept-aex-q/ | [
"basis",
"country",
"division_or_zone",
"hazard_class",
"iec_standard",
"north_american_designation"
] | US | Zone 1 | Class I | ISA 60079-5 | null | null | null |
null | protection concept | [
"category"
] | us-protection-concept-aex-td | null | AEx tD | https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf | AEx tD US Zone 21 ISA 60079-31 | https://referencesource.org/ex-classification-system-crosswalk/us-protection-concept-aex-td/ | [
"country",
"division_or_zone",
"iec_standard",
"north_american_designation"
] | US | Zone 21 | null | ISA 60079-31 | null | null | null |
Flammable gases and vapors | area classification | [
"category"
] | zone-0-1-2-gas-area-classification-class-i | Zone 0, 1, 2 (gas) | Class I | https://www.inframena.com/hazardous-area-classification-equivalency-guide/ | Class I | Flammable gases and vapors | https://referencesource.org/ex-classification-system-crosswalk/zone-0-1-2-gas-area-classification-class-i/ | [
"basis",
"north_american_designation"
] | null | null | null | null | null | null | null |
Continuous hazard | area classification | [
"category"
] | zone-0-area-classification-class-i-division-1 | Zone 0 | Class I Division 1 | https://www.inframena.com/hazardous-area-classification-equivalency-guide/ | Continuous hazard | Class I Division 1 | Zone 0 | https://referencesource.org/ex-classification-system-crosswalk/zone-0-area-classification-class-i-division-1/ | [
"basis",
"iec_designation",
"north_american_designation"
] | null | null | null | null | null | null | null |
Frequent hazard | area classification | [
"category"
] | zone-1-area-classification-class-i-division-1 | Zone 1 | Class I Division 1 | https://www.inframena.com/hazardous-area-classification-equivalency-guide/ | Frequent hazard | Class I Division 1 | Zone 1 | https://referencesource.org/ex-classification-system-crosswalk/zone-1-area-classification-class-i-division-1/ | [
"basis",
"iec_designation",
"north_american_designation"
] | null | null | null | null | null | null | null |
Occasional hazard | area classification | [
"category"
] | zone-2-area-classification-class-i-division-2 | Zone 2 | Class I Division 2 | https://www.inframena.com/hazardous-area-classification-equivalency-guide/ | Occasional hazard | Class I Division 2 | Zone 2 | https://referencesource.org/ex-classification-system-crosswalk/zone-2-area-classification-class-i-division-2/ | [
"basis",
"iec_designation",
"north_american_designation"
] | null | null | null | null | null | null | null |
Hazard basis | system attribute | [
"category"
] | zone-0-1-2-gas-zone-20-21-22-dust-system-attribute-class-i-gas-ii-dust-iii-fibers | Zone 0, 1, 2 (gas); Zone 20, 21, 22 (dust) | Class I (gas), II (dust), III (fibers) | https://exknowledge.com/pages/nec-500-vs-atex-iec.html | Hazard basis | Class I (gas), II (dust), III (fibers) | Zone 0, 1, 2 (gas only) | Zone 0, 1, 2 (gas); Zone 20, 21, 22 (dust) | https://referencesource.org/ex-classification-system-crosswalk/zone-0-1-2-gas-zone-20-21-22-dust-system-attribute-class-i-gas-ii-dust-iii-fibers/ | [
"basis",
"iec_designation",
"north_american_designation"
] | null | null | null | null | null | null | null |
Acetylene | gas group | [
"category"
] | iic-gas-group-class-i-group-a | IIC | Class I, Group A | https://www.e2s.com/guide-for-hazardous-areas/gas-and-dust-groups | IIC | Acetylene | Class I, Group A | Acetylene | https://referencesource.org/ex-classification-system-crosswalk/iic-gas-group-class-i-group-a/ | [
"basis",
"iec_designation",
"north_american_designation"
] | null | null | null | null | null | null | null |
Hydrogen | gas group | [
"category"
] | iib-h2-gas-group-class-i-group-b | IIB + H2 | Class I, Group B | https://www.e2s.com/guide-for-hazardous-areas/gas-and-dust-groups | IIB + H2 | Hydrogen | Class I, Group B | Hydrogen | https://referencesource.org/ex-classification-system-crosswalk/iib-h2-gas-group-class-i-group-b/ | [
"basis",
"iec_designation",
"north_american_designation"
] | null | null | null | null | null | null | null |
Ethylene | gas group | [
"category"
] | iib-gas-group-class-i-group-c | IIB | Class I, Group C | https://www.e2s.com/guide-for-hazardous-areas/gas-and-dust-groups | IIB | Ethylene | Class I, Group C | Ethylene | https://referencesource.org/ex-classification-system-crosswalk/iib-gas-group-class-i-group-c/ | [
"basis",
"iec_designation",
"north_american_designation"
] | null | null | null | null | null | null | null |
Propane | gas group | [
"category"
] | iia-gas-group-class-i-group-d | IIA | Class I, Group D | https://www.e2s.com/guide-for-hazardous-areas/gas-and-dust-groups | IIA | Propane | Class I, Group D | | https://referencesource.org/ex-classification-system-crosswalk/iia-gas-group-class-i-group-d/ | [
"basis",
"iec_designation",
"north_american_designation"
] | null | null | null | null | null | null | null |
Combustible dust | area classification | [
"category"
] | zone-20-21-22-dust-area-classification-class-ii | Zone 20, 21, 22 (dust) | Class II | https://www.inframena.com/hazardous-area-classification-equivalency-guide/ | Class II | Combustible dust | https://referencesource.org/ex-classification-system-crosswalk/zone-20-21-22-dust-area-classification-class-ii/ | [
"basis",
"north_american_designation"
] | null | null | null | null | null | null | null |
Metal dusts | dust group | [
"category"
] | iiic-dust-group-class-ii-group-e | IIIC | Class II, Group E | https://www.e2s.com/guide-for-hazardous-areas/gas-and-dust-groups | Gas / dust group | Typical Substances | IIC | Acetylene | Class I, Group A | Acetylene | IIB + H2 | Hydrogen | Class I, Group B | Hydrogen | IIB | Ethylene | Class I, Group C | Ethylene | IIA | Propane | Class I, Group D | Propane | IIIC | Conductive dust | Class II, Group E | | https://referencesource.org/ex-classification-system-crosswalk/iiic-dust-group-class-ii-group-e/ | [
"iec_designation",
"north_american_designation"
] | null | null | null | null | null | null | null |
Carbon dusts | dust group | [
"category"
] | iiib-dust-group-class-ii-group-f | IIIB | Class II, Group F | https://www.e2s.com/guide-for-hazardous-areas/gas-and-dust-groups | Gas / dust group | Typical Substances | IIC | Acetylene | Class I, Group A | Acetylene | IIB + H2 | Hydrogen | Class I, Group B | Hydrogen | IIB | Ethylene | Class I, Group C | Ethylene | IIA | Propane | Class I, Group D | Propane | IIIC | Conductive dust | Class II, Group E | Combustible metal dust | IIIB | Non-conduc... | https://referencesource.org/ex-classification-system-crosswalk/iiib-dust-group-class-ii-group-f/ | [
"iec_designation",
"north_american_designation"
] | null | null | null | null | null | null | null |
Grain, flour, plastic dusts | dust group | [
"category"
] | dust-group-class-ii-group-g | null | Class II, Group G | https://www.e2s.com/guide-for-hazardous-areas/gas-and-dust-groups | Class II, Group G | https://referencesource.org/ex-classification-system-crosswalk/dust-group-class-ii-group-g/ | [
"north_american_designation"
] | null | null | null | null | null | null | null |
Dust classification | system attribute | [
"category"
] | zone-20-21-22-iiia-iiib-iiic-system-attribute-class-ii-groups-e-f-g | Zone 20, 21, 22 (IIIA, IIIB, IIIC) | Class II Groups E, F, G | https://exknowledge.com/pages/nec-500-vs-atex-iec.html | Dust classification | Class II Groups E, F, G | Not covered | Zone 20, 21, 22 (IIIA, IIIB, IIIC) | https://referencesource.org/ex-classification-system-crosswalk/zone-20-21-22-iiia-iiib-iiic-system-attribute-class-ii-groups-e-f-g/ | [
"basis",
"iec_designation",
"north_american_designation"
] | null | null | null | null | null | null | null |
Ignitable fibers | area classification | [
"category"
] | area-classification-class-iii | null | Class III | https://www.inframena.com/hazardous-area-classification-equivalency-guide/ | Class III | Ignitable fibers | https://referencesource.org/ex-classification-system-crosswalk/area-classification-class-iii/ | [
"basis",
"north_american_designation"
] | null | null | null | null | null | null | null |
IEC considers fibers within the dust framework | dust group | [
"category"
] | dust-group-class-iii | null | Class III | https://exknowledge.com/pages/nec-500-vs-atex-iec.html | Fiber hazards: NEC Class III (fibers/flyings) has no IEC equivalent. IEC considers fibers within the dust framework. | https://referencesource.org/ex-classification-system-crosswalk/dust-group-class-iii/ | [
"basis",
"north_american_designation"
] | null | null | null | null | null | null | null |
Fibers and flyings | dust group | [
"category"
] | iiia-dust-group-class-iii | IIIA | Class III | https://www.e2s.com/guide-for-hazardous-areas/gas-and-dust-groups | Gas / dust group | Typical Substances | IIC | Acetylene | Class I, Group A | Acetylene | IIB + H2 | Hydrogen | Class I, Group B | Hydrogen | IIB | Ethylene | Class I, Group C | Ethylene | IIA | Propane | Class I, Group D | Propane | IIIC | Conductive dust | Class II, Group E | Combustible metal dust | IIIB | Non-conduc... | https://referencesource.org/ex-classification-system-crosswalk/iiia-dust-group-class-iii/ | [
"iec_designation",
"north_american_designation"
] | null | null | null | null | null | null | null |
null | protection concept | [
"category"
] | class-ii-us-protection-concept-dip | null | (DIP) | https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf | (DIP) US Class II Division 1 UL 1203 | https://referencesource.org/ex-classification-system-crosswalk/class-ii-us-protection-concept-dip/ | [
"country",
"division_or_zone",
"hazard_class",
"iec_standard",
"north_american_designation"
] | US | Division 1 | Class II | UL 1203 | null | null | null |
null | protection concept | [
"category"
] | class-ii-ca-protection-concept-dip-a21 | null | (DIP) A21 | https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf | (DIP) A21 CA Class II Division 1 CSA E61241-1-1 | https://referencesource.org/ex-classification-system-crosswalk/class-ii-ca-protection-concept-dip-a21/ | [
"country",
"division_or_zone",
"hazard_class",
"iec_standard",
"north_american_designation"
] | CA | Division 1 | Class II | CSA E61241-1-1 | null | null | null |
null | protection concept | [
"category"
] | protection-concept-dip-a22 | null | (DIP) A22 | https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf | (DIP) A22 Division 2 CSA E61241-1-1 | https://referencesource.org/ex-classification-system-crosswalk/protection-concept-dip-a22/ | [
"division_or_zone",
"iec_standard",
"north_american_designation"
] | null | Division 2 | null | CSA E61241-1-1 | null | null | null |
Division 1 equipment generally satisfies Category 2 | equipment category | [
"category"
] | category-2-equipment-category-division-1 | Category 2 | Division 1 | https://exknowledge.com/pages/nec-500-vs-atex-iec.html | Map existing equipment to ATEX categories (Division 1 equipment generally satisfies Category 2; Division 2 satisfies Category 3) | https://referencesource.org/ex-classification-system-crosswalk/category-2-equipment-category-division-1/ | [
"basis",
"iec_designation",
"north_american_designation"
] | null | null | null | null | null | null | null |
Hazard present during normal operation | area classification | [
"category"
] | zone-0-zone-1-area-classification-division-1 | Zone 0 / Zone 1 | Division 1 | https://www.inframena.com/hazardous-area-classification-equivalency-guide/ | Division 1 | Hazard present during normal operation | https://referencesource.org/ex-classification-system-crosswalk/zone-0-zone-1-area-classification-division-1/ | [
"basis",
"north_american_designation"
] | null | null | null | null | null | null | null |
null | area classification | [
"category"
] | zone-0-zone-20-area-classification-division-1 | Zone 0 / Zone 20 | Division 1 | https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf | Division 1 Zone 0 / Zone 20 | https://referencesource.org/ex-classification-system-crosswalk/zone-0-zone-20-area-classification-division-1/ | [
"iec_designation",
"north_american_designation"
] | null | null | null | null | null | null | null |
Explosive atmosphere likely during normal operation (10–1000 hrs/yr) | area classification | [
"category"
] | zone-1-zone-0-area-classification-division-1 | Zone 1 (+ Zone 0) | Division 1 | https://exknowledge.com/pages/nec-500-vs-atex-iec.html | Division 1 | Zone 1 (+ Zone 0) | Explosive atmosphere likely during normal operation (10–1000 hrs/yr) | https://referencesource.org/ex-classification-system-crosswalk/zone-1-zone-0-area-classification-division-1/ | [
"basis",
"iec_designation",
"north_american_designation"
] | null | null | null | null | null | null | null |
null | area classification | [
"category"
] | zone-1-zone-21-area-classification-division-1 | Zone 1 / Zone 21 | Division 1 | https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf | Division 1 Zone 1 / Zone 21 | https://referencesource.org/ex-classification-system-crosswalk/zone-1-zone-21-area-classification-division-1/ | [
"iec_designation",
"north_american_designation"
] | null | null | null | null | null | null | null |
Division 2 satisfies Category 3 | equipment category | [
"category"
] | category-3-equipment-category-division-2 | Category 3 | Division 2 | https://exknowledge.com/pages/nec-500-vs-atex-iec.html | Map existing equipment to ATEX categories (Division 1 equipment generally satisfies Category 2; Division 2 satisfies Category 3) | https://referencesource.org/ex-classification-system-crosswalk/category-3-equipment-category-division-2/ | [
"basis",
"iec_designation",
"north_american_designation"
] | null | null | null | null | null | null | null |
Explosive atmosphere not likely; only abnormal conditions (<10 hrs/yr) | area classification | [
"category"
] | zone-2-area-classification-division-2 | Zone 2 | Division 2 | https://exknowledge.com/pages/nec-500-vs-atex-iec.html | Division 2 | Zone 2 | Explosive atmosphere not likely; only abnormal conditions (<10 hrs/yr) | https://referencesource.org/ex-classification-system-crosswalk/zone-2-area-classification-division-2/ | [
"basis",
"iec_designation",
"north_american_designation"
] | null | null | null | null | [
{
"field": "basis",
"versions": [
{
"as_of": "2026-08-06T00:00:00",
"source": "https://exknowledge.com/pages/nec-500-vs-atex-iec.html",
"source_quote": "Division 2 | Zone 2 | Explosive atmosphere not likely; only abnormal conditions (<10 hrs/yr)",
"value": "Explosive at... | null | null |
null | area classification | [
"category"
] | zone-2-zone-22-area-classification-division-2 | Zone 2 / Zone 22 | Division 2 | https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf | Division 2 Zone 2 / Zone 22 | https://referencesource.org/ex-classification-system-crosswalk/zone-2-zone-22-area-classification-division-2/ | [
"iec_designation",
"north_american_designation"
] | null | null | null | null | null | null | null |
Prevent dust ingress and limit surface temperature | protection concept | [
"category"
] | ex-t-dust-protection-by-enclosure-protection-concept-dust-ignition-proof | Ex t (Dust protection by enclosure) | Dust-ignition-proof | https://exknowledge.com/pages/nec-500-vs-atex-iec.html | Dust-ignition-proof | Ex t (Dust protection by enclosure) | IEC 60079-31 | Prevent dust ingress and limit surface temperature | https://referencesource.org/ex-classification-system-crosswalk/ex-t-dust-protection-by-enclosure-protection-concept-dust-ignition-proof/ | [
"basis",
"iec_designation",
"iec_standard",
"north_american_designation"
] | null | null | null | IEC 60079-31 | null | null | null |
Encapsulation | protection concept | [
"category"
] | ex-m-protection-concept-encapsulation | Ex m | Encapsulation | https://www.inframena.com/hazardous-area-classification-equivalency-guide/ | Ex m | Encapsulation | https://referencesource.org/ex-classification-system-crosswalk/ex-m-protection-concept-encapsulation/ | [
"basis",
"iec_designation",
"north_american_designation"
] | null | null | null | null | null | null | null |
null | protection concept | [
"category"
] | class-i-ca-protection-concept-ex | null | Ex | https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf | Ex CA Class I Division 1 & 2 CSA 60079-0 | https://referencesource.org/ex-classification-system-crosswalk/class-i-ca-protection-concept-ex/ | [
"country",
"division_or_zone",
"hazard_class",
"iec_standard",
"north_american_designation"
] | CA | Division 1 & 2 | Class I | CSA 60079-0 | null | null | null |
null | protection concept | [
"category"
] | us-protection-concept-ex | null | Ex | https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf | Ex US Zone 20, 21, 22 ISA 60079-0 | https://referencesource.org/ex-classification-system-crosswalk/us-protection-concept-ex/ | [
"country",
"division_or_zone",
"iec_standard",
"north_american_designation"
] | US | Zone 20, 21, 22 | null | ISA 60079-0 | null | null | null |
null | protection concept | [
"category"
] | class-i-ca-protection-concept-ex-d | null | Ex d | https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf | Ex d CA Class I Zone 1 CSA 60079-1 | https://referencesource.org/ex-classification-system-crosswalk/class-i-ca-protection-concept-ex-d/ | [
"country",
"division_or_zone",
"hazard_class",
"iec_standard",
"north_american_designation"
] | CA | Zone 1 | Class I | CSA 60079-1 | null | null | null |
null | protection concept | [
"category"
] | class-i-ca-protection-concept-ex-e | null | Ex e | https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf | Ex e CA Class I Zone 1 CSA E60079-7 | https://referencesource.org/ex-classification-system-crosswalk/class-i-ca-protection-concept-ex-e/ | [
"country",
"division_or_zone",
"hazard_class",
"iec_standard",
"north_american_designation"
] | CA | Zone 1 | Class I | CSA E60079-7 | null | null | null |
null | protection concept | [
"category"
] | class-i-ca-protection-concept-ex-ia | null | EX ia | https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf | EX ia CA Class I Zone 0 CSA E60079-11 | https://referencesource.org/ex-classification-system-crosswalk/class-i-ca-protection-concept-ex-ia/ | [
"country",
"division_or_zone",
"hazard_class",
"iec_standard",
"north_american_designation"
] | CA | Zone 0 | Class I | CSA E60079-11 | null | null | null |
null | protection concept | [
"category"
] | class-i-ca-protection-concept-ex-ib | null | Ex ib | https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf | Ex ib CA Class I Zone 1 CSA E60079-11 | https://referencesource.org/ex-classification-system-crosswalk/class-i-ca-protection-concept-ex-ib/ | [
"country",
"division_or_zone",
"hazard_class",
"iec_standard",
"north_american_designation"
] | CA | Zone 1 | Class I | CSA E60079-11 | null | null | null |
Encapsulated | protection concept | [
"category"
] | class-i-ca-protection-concept-ex-m | null | Ex m | https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf | Encapsulated Ex m CA Class I Zone 1 CSA E60079-18 | https://referencesource.org/ex-classification-system-crosswalk/class-i-ca-protection-concept-ex-m/ | [
"basis",
"country",
"division_or_zone",
"hazard_class",
"iec_standard",
"north_american_designation"
] | CA | Zone 1 | Class I | CSA E60079-18 | null | null | null |
null | protection concept | [
"category"
] | class-i-ca-protection-concept-ex-na | null | EX nA | https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf | EX nA CA Class I Zone 2 CSA E60079-15 | https://referencesource.org/ex-classification-system-crosswalk/class-i-ca-protection-concept-ex-na/ | [
"country",
"division_or_zone",
"hazard_class",
"iec_standard",
"north_american_designation"
] | CA | Zone 2 | Class I | CSA E60079-15 | null | null | null |
null | protection concept | [
"category"
] | class-i-ca-protection-concept-ex-nc | null | Ex nC | https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf | Ex nC CA Class I Zone 2 CSA E60079-15 | https://referencesource.org/ex-classification-system-crosswalk/class-i-ca-protection-concept-ex-nc/ | [
"country",
"division_or_zone",
"hazard_class",
"iec_standard",
"north_american_designation"
] | CA | Zone 2 | Class I | CSA E60079-15 | null | null | null |
null | protection concept | [
"category"
] | class-i-ca-protection-concept-ex-nl | null | Ex nL | https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf | Ex nL CA Class I Zone 2 CSA E60079-15 | https://referencesource.org/ex-classification-system-crosswalk/class-i-ca-protection-concept-ex-nl/ | [
"country",
"division_or_zone",
"hazard_class",
"iec_standard",
"north_american_designation"
] | CA | Zone 2 | Class I | CSA E60079-15 | null | null | null |
null | protection concept | [
"category"
] | class-i-ca-protection-concept-ex-nr | null | Ex nR | https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf | Ex nR CA Class I Zone 2 CSA E60079-15 | https://referencesource.org/ex-classification-system-crosswalk/class-i-ca-protection-concept-ex-nr/ | [
"country",
"division_or_zone",
"hazard_class",
"iec_standard",
"north_american_designation"
] | CA | Zone 2 | Class I | CSA E60079-15 | null | null | null |
null | protection concept | [
"category"
] | class-i-ca-protection-concept-ex-o | null | EX o | https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf | EX o CA Class I Zone 1 CSA E60079-6 | https://referencesource.org/ex-classification-system-crosswalk/class-i-ca-protection-concept-ex-o/ | [
"country",
"division_or_zone",
"hazard_class",
"iec_standard",
"north_american_designation"
] | CA | Zone 1 | Class I | CSA E60079-6 | null | null | null |
null | protection concept | [
"category"
] | class-i-ca-protection-concept-ex-px | null | Ex px | https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf | Ex px CA Class I Zone 1 CSA E60079-2 | https://referencesource.org/ex-classification-system-crosswalk/class-i-ca-protection-concept-ex-px/ | [
"country",
"division_or_zone",
"hazard_class",
"iec_standard",
"north_american_designation"
] | CA | Zone 1 | Class I | CSA E60079-2 | null | null | null |
null | protection concept | [
"category"
] | class-i-ca-protection-concept-ex-py | null | Ex py | https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf | Ex py CA Class I Zone 1 CSA E60079-2 | https://referencesource.org/ex-classification-system-crosswalk/class-i-ca-protection-concept-ex-py/ | [
"country",
"division_or_zone",
"hazard_class",
"iec_standard",
"north_american_designation"
] | CA | Zone 1 | Class I | CSA E60079-2 | null | null | null |
null | protection concept | [
"category"
] | class-i-ca-protection-concept-ex-pz | null | Ex pz | https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf | Ex pz CA Class I Zone 2 CSA E60079-2 | https://referencesource.org/ex-classification-system-crosswalk/class-i-ca-protection-concept-ex-pz/ | [
"country",
"division_or_zone",
"hazard_class",
"iec_standard",
"north_american_designation"
] | CA | Zone 2 | Class I | CSA E60079-2 | null | null | null |
null | protection concept | [
"category"
] | class-i-ca-protection-concept-ex-q | null | Ex q | https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf | Ex q CA Class I Zone 1 CSA E60079-5 | https://referencesource.org/ex-classification-system-crosswalk/class-i-ca-protection-concept-ex-q/ | [
"country",
"division_or_zone",
"hazard_class",
"iec_standard",
"north_american_designation"
] | CA | Zone 1 | Class I | CSA E60079-5 | null | null | null |
Contain the explosion inside the enclosure | protection concept | [
"category"
] | ex-d-flameproof-protection-concept-explosion-proof-xp | Ex d (Flameproof) | Explosion-proof (XP) | https://exknowledge.com/pages/nec-500-vs-atex-iec.html | Explosion-proof (XP) | Ex d (Flameproof) | IEC 60079-1 | Contain the explosion inside the enclosure | https://referencesource.org/ex-classification-system-crosswalk/ex-d-flameproof-protection-concept-explosion-proof-xp/ | [
"basis",
"iec_designation",
"iec_standard",
"north_american_designation"
] | null | null | null | IEC 60079-1 | null | null | null |
Protection concept | system attribute | [
"category"
] | iec-aligned-types-ex-d-ex-i-ex-e-etc-system-attribute-explosion-proof-xp-intrinsically-safe-is | IEC-aligned types (Ex d, Ex i, Ex e, etc.) | Explosion-proof (XP), intrinsically safe (IS) | https://exknowledge.com/pages/nec-500-vs-atex-iec.html | Protection concept | Explosion-proof (XP), intrinsically safe (IS) | IEC-aligned types (Ex d, Ex i, etc.) | IEC-aligned types (Ex d, Ex i, Ex e, etc.) | https://referencesource.org/ex-classification-system-crosswalk/iec-aligned-types-ex-d-ex-i-ex-e-etc-system-attribute-explosion-proof-xp-intrinsically-safe-is/ | [
"basis",
"iec_designation",
"north_american_designation"
] | null | null | null | null | null | null | null |
Flameproof enclosure | protection concept | [
"category"
] | ex-d-protection-concept-flameproof-enclosure | Ex d | Flameproof enclosure | https://www.inframena.com/hazardous-area-classification-equivalency-guide/ | Ex d | Flameproof enclosure | https://referencesource.org/ex-classification-system-crosswalk/ex-d-protection-concept-flameproof-enclosure/ | [
"basis",
"iec_designation",
"north_american_designation"
] | null | null | null | null | null | null | null |
MESG <0.50 mm | gas group | [
"category"
] | iic-gas-group-group-a | IIC | Group A | https://exknowledge.com/pages/nec-500-vs-atex-iec.html | A | IIC | Acetylene | <0.50 mm | https://referencesource.org/ex-classification-system-crosswalk/iic-gas-group-group-a/ | [
"iec_designation"
] | null | null | null | null | [
{
"field": "basis",
"versions": [
{
"as_of": "2026-08-06T00:00:00",
"source": "https://exknowledge.com/pages/nec-500-vs-atex-iec.html",
"source_quote": "A | IIC | Acetylene | <0.50 mm",
"value": "MESG <0.50 mm"
},
{
"as_of": "2026-08-06T00:00:00",
... | null | null |
Hydrogen | gas group | [
"category"
] | iic-gas-group-group-b | IIC | Group B | https://ldpi-inc.com/resources/classification-codes/class-1-locations/ | Hydrogen | B | 520 | 968 | 6,000 PSI | IIC | https://referencesource.org/ex-classification-system-crosswalk/iic-gas-group-group-b/ | [
"basis",
"iec_designation"
] | null | null | null | null | null | null | null |
MESG <0.50 mm | gas group | [
"category"
] | iic-partially-iib-h-gas-group-group-b | IIC (partially IIB+H₂) | Group B | https://exknowledge.com/pages/nec-500-vs-atex-iec.html | B | IIC (partially IIB+H₂) | Hydrogen, butadiene | <0.50 mm | https://referencesource.org/ex-classification-system-crosswalk/iic-partially-iib-h-gas-group-group-b/ | [
"iec_designation"
] | null | null | null | null | null | null | null |
MESG 0.50–0.90 mm | gas group | [
"category"
] | iib-gas-group-group-c | IIB | Group C | https://exknowledge.com/pages/nec-500-vs-atex-iec.html | C | IIB | Ethylene, ethyl ether | 0.50–0.90 mm | https://referencesource.org/ex-classification-system-crosswalk/iib-gas-group-group-c/ | [
"iec_designation"
] | null | null | null | null | [
{
"field": "basis",
"versions": [
{
"as_of": "2026-08-06T00:00:00",
"source": "https://exknowledge.com/pages/nec-500-vs-atex-iec.html",
"source_quote": "C | IIB | Ethylene, ethyl ether | 0.50–0.90 mm",
"value": "MESG 0.50–0.90 mm"
},
{
"as_of": "2026... | null | null |
Methane (mining) | gas group | [
"category"
] | gas-group-group-d | null | Group D | https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf | Methane (mining) Group D | https://referencesource.org/ex-classification-system-crosswalk/gas-group-group-d/ | [
"basis",
"north_american_designation"
] | null | null | null | null | null | null | null |
MESG >0.90 mm | gas group | [
"category"
] | iia-gas-group-group-d | IIA | Group D | https://exknowledge.com/pages/nec-500-vs-atex-iec.html | D | IIA | Methane, propane, gasoline | >0.90 mm | https://referencesource.org/ex-classification-system-crosswalk/iia-gas-group-group-d/ | [
"iec_designation"
] | null | null | null | null | [
{
"field": "basis",
"versions": [
{
"as_of": "2026-08-06T00:00:00",
"source": "https://exknowledge.com/pages/nec-500-vs-atex-iec.html",
"source_quote": "D | IIA | Methane, propane, gasoline | >0.90 mm",
"value": "MESG >0.90 mm"
},
{
"as_of": "2026-08... | null | null |
Combustible Metal Dusts | dust group | [
"category"
] | dust-group-group-e | null | Group E | https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf | Combustible Metal Dusts Group E | https://referencesource.org/ex-classification-system-crosswalk/dust-group-group-e/ | [
"basis",
"north_american_designation"
] | null | null | null | null | [
{
"field": "basis",
"versions": [
{
"as_of": "2026-10-06T00:00:00",
"source": "https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf",
"source_quote": "Combustible Metal Dusts Group E",
"value": "Combustible Metal Dusts"
},
{
... | null | null |
Carbon dust | dust group | [
"category"
] | dust-group-group-f | null | Group F | https://www.inframena.com/hazardous-area-classification-equivalency-guide/ | F | Carbon dust | https://referencesource.org/ex-classification-system-crosswalk/dust-group-group-f/ | [
"basis"
] | null | null | null | null | [] | null | null |
Grain / flour dust | dust group | [
"category"
] | dust-group-group-g | null | Group G | https://www.inframena.com/hazardous-area-classification-equivalency-guide/ | G | Grain / flour dust | https://referencesource.org/ex-classification-system-crosswalk/dust-group-group-g/ | [
"basis"
] | null | null | null | null | null | null | null |
Gas classification | system attribute | [
"category"
] | groups-iic-iib-iia-system-attribute-groups-a-b-c-d | Groups IIC, IIB, IIA | Groups A, B, C, D | https://exknowledge.com/pages/nec-500-vs-atex-iec.html | Gas classification | Groups A, B, C, D | Groups IIC, IIB, IIA | Groups IIC, IIB, IIA | https://referencesource.org/ex-classification-system-crosswalk/groups-iic-iib-iia-system-attribute-groups-a-b-c-d/ | [
"basis",
"iec_designation",
"north_american_designation"
] | null | null | null | null | null | null | null |
Seal ignition source from atmosphere | protection concept | [
"category"
] | ex-nc-ex-m-protection-concept-hermetically-sealed | Ex nC / Ex m | Hermetically sealed | https://exknowledge.com/pages/nec-500-vs-atex-iec.html | Hermetically sealed | Ex nC / Ex m | IEC 60079-15 / -18 | Seal ignition source from atmosphere | https://referencesource.org/ex-classification-system-crosswalk/ex-nc-ex-m-protection-concept-hermetically-sealed/ | [
"basis",
"iec_designation",
"iec_standard",
"north_american_designation"
] | null | null | null | IEC 60079-15 / -18 | null | null | null |
Increased safety | protection concept | [
"category"
] | ex-e-protection-concept-increased-safety | Ex e | Increased safety | https://www.inframena.com/hazardous-area-classification-equivalency-guide/ | Ex e | Increased safety | https://referencesource.org/ex-classification-system-crosswalk/ex-e-protection-concept-increased-safety/ | [
"basis",
"iec_designation",
"north_american_designation"
] | null | null | null | null | null | null | null |
Intrinsic safety | protection concept | [
"category"
] | ex-i-protection-concept-intrinsically-safe | Ex i | Intrinsically Safe | https://www.inframena.com/hazardous-area-classification-equivalency-guide/ | Ex i | Intrinsic safety | https://referencesource.org/ex-classification-system-crosswalk/ex-i-protection-concept-intrinsically-safe/ | [
"basis",
"iec_designation"
] | null | null | null | null | null | null | null |
Limit energy below ignition threshold | protection concept | [
"category"
] | ex-i-ex-ia-ex-ib-protection-concept-intrinsically-safe-is | Ex i (Ex ia, Ex ib) | Intrinsically Safe (IS) | https://exknowledge.com/pages/nec-500-vs-atex-iec.html | Intrinsically Safe (IS) | Ex i (Ex ia, Ex ib) | IEC 60079-11 | Limit energy below ignition threshold | https://referencesource.org/ex-classification-system-crosswalk/ex-i-ex-ia-ex-ib-protection-concept-intrinsically-safe-is/ | [
"basis",
"iec_designation",
"iec_standard",
"north_american_designation"
] | null | null | null | IEC 60079-11 | null | null | null |
null | protection concept | [
"category"
] | class-i-ca-protection-concept-is | null | (IS) | https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf | (IS) CA Class I Division 1 C22.2 No. 157 | https://referencesource.org/ex-classification-system-crosswalk/class-i-ca-protection-concept-is/ | [
"country",
"division_or_zone",
"hazard_class",
"iec_standard",
"north_american_designation"
] | CA | Division 1 | Class I | C22.2 No. 157 | null | null | null |
null | protection concept | [
"category"
] | class-i-us-protection-concept-is | null | (IS) | https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf | (IS) US Class I Division 1 UL 913 / FM 3610 | https://referencesource.org/ex-classification-system-crosswalk/class-i-us-protection-concept-is/ | [
"country",
"division_or_zone",
"hazard_class",
"iec_standard",
"north_american_designation"
] | US | Division 1 | Class I | UL 913 / FM 3610 | null | null | null |
null | protection concept | [
"category"
] | class-ii-ca-protection-concept-is | null | (IS) | https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf | (IS) CA Class II Division 1 CSA C22.2 No. 157 | https://referencesource.org/ex-classification-system-crosswalk/class-ii-ca-protection-concept-is/ | [
"country",
"division_or_zone",
"hazard_class",
"iec_standard",
"north_american_designation"
] | CA | Division 1 | Class II | CSA C22.2 No. 157 | null | null | null |
null | protection concept | [
"category"
] | class-ii-us-protection-concept-is | null | (IS) | https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf | (IS) US Class II Division 1 UL 913 / FM 3610 | https://referencesource.org/ex-classification-system-crosswalk/class-ii-us-protection-concept-is/ | [
"country",
"division_or_zone",
"hazard_class",
"iec_standard",
"north_american_designation"
] | US | Division 1 | Class II | UL 913 / FM 3610 | null | null | null |
null | protection concept | [
"category"
] | class-iii-ca-protection-concept-is | null | (IS) | https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf | (IS) CA Class III Division 1 CSA C22.2 No. 157 | https://referencesource.org/ex-classification-system-crosswalk/class-iii-ca-protection-concept-is/ | [
"country",
"division_or_zone",
"hazard_class",
"iec_standard",
"north_american_designation"
] | CA | Division 1 | Class III | CSA C22.2 No. 157 | null | null | null |
null | protection concept | [
"category"
] | class-iii-us-protection-concept-is | null | (IS) | https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf | (IS) US Class III Division 1 UL 913 / FM 3610 | https://referencesource.org/ex-classification-system-crosswalk/class-iii-us-protection-concept-is/ | [
"country",
"division_or_zone",
"hazard_class",
"iec_standard",
"north_american_designation"
] | US | Division 1 | Class III | UL 913 / FM 3610 | null | null | null |
Geographic use: USA, Canada vs EU, UK, most of the world | system attribute | [
"category"
] | atex-iecex-zone-system-attribute-nec-500-class-division | ATEX / IECEx (Zone) | NEC 500 (Class/Division) | https://exknowledge.com/pages/nec-500-vs-atex-iec.html | Geographic use | USA, Canada | USA, Canada | EU, UK, most of the world | https://referencesource.org/ex-classification-system-crosswalk/atex-iecex-zone-system-attribute-nec-500-class-division/ | null | null | null | null | null | null | null | null |
Legal framework | system attribute | [
"category"
] | eu-directive-2014-34-eu-iecex-scheme-system-attribute-nfpa-70-adopted-by-ahjs | EU Directive 2014/34/EU / IECEx scheme | NFPA 70 (adopted by AHJs) | https://exknowledge.com/pages/nec-500-vs-atex-iec.html | Legal framework | NFPA 70 (adopted by AHJs) | NFPA 70 (adopted by AHJs) | EU Directive 2014/34/EU / IECEx scheme | https://referencesource.org/ex-classification-system-crosswalk/eu-directive-2014-34-eu-iecex-scheme-system-attribute-nfpa-70-adopted-by-ahjs/ | [
"basis",
"iec_designation",
"north_american_designation"
] | null | null | null | null | null | null | null |
null | protection concept | [
"category"
] | class-i-ca-protection-concept-ni | null | (NI) | https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf | (NI) CA Class I Division 2 C22.2 No. 213 | https://referencesource.org/ex-classification-system-crosswalk/class-i-ca-protection-concept-ni/ | [
"country",
"division_or_zone",
"hazard_class",
"iec_standard",
"north_american_designation"
] | CA | Division 2 | Class I | C22.2 No. 213 | null | null | null |
Non-Incendive | protection concept | [
"category"
] | class-i-us-protection-concept-ni | null | (NI) | https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf | Non-Incendive (NI) US Class I Division 2 ISA 12.12.01/FM 3611 | https://referencesource.org/ex-classification-system-crosswalk/class-i-us-protection-concept-ni/ | [
"basis",
"country",
"division_or_zone",
"hazard_class",
"iec_standard",
"north_american_designation"
] | US | Division 2 | Class I | ISA 12.12.01/FM 3611 | null | null | null |
Dust Protected | protection concept | [
"category"
] | class-ii-us-protection-concept-ni | null | (NI) | https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf | Dust Protected (NI) US Class II Division 2 ISA 12.12.01 / FM 3611 | https://referencesource.org/ex-classification-system-crosswalk/class-ii-us-protection-concept-ni/ | [
"basis",
"country",
"division_or_zone",
"hazard_class",
"iec_standard",
"north_american_designation"
] | US | Division 2 | Class II | ISA 12.12.01 / FM 3611 | null | null | null |
Normal operation cannot cause ignition | protection concept | [
"category"
] | ex-na-ex-ec-protection-concept-non-incendive | Ex nA / Ex ec | Non-incendive | https://exknowledge.com/pages/nec-500-vs-atex-iec.html | Non-incendive | Ex nA / Ex ec | IEC 60079-15 / -7 | Normal operation cannot cause ignition | https://referencesource.org/ex-classification-system-crosswalk/ex-na-ex-ec-protection-concept-non-incendive/ | [
"basis",
"iec_designation",
"iec_standard",
"north_american_designation"
] | null | null | null | IEC 60079-15 / -7 | null | null | null |
Certification body | system attribute | [
"category"
] | notified-bodies-atex-excbs-iecex-system-attribute-nrtls-ul-fm-csa | Notified Bodies (ATEX) / ExCBs (IECEx) | NRTLs (UL, FM, CSA) | https://exknowledge.com/pages/nec-500-vs-atex-iec.html | Certification body | NRTLs (UL, FM, CSA) | NRTLs | Notified Bodies (ATEX) / ExCBs (IECEx) | https://referencesource.org/ex-classification-system-crosswalk/notified-bodies-atex-excbs-iecex-system-attribute-nrtls-ul-fm-csa/ | [
"basis",
"iec_designation",
"north_american_designation"
] | null | null | null | null | null | null | null |
Pressurization | protection concept | [
"category"
] | ex-p-protection-concept-pressurization | Ex p | Pressurization | https://www.inframena.com/hazardous-area-classification-equivalency-guide/ | Ex p | Pressurization | https://referencesource.org/ex-classification-system-crosswalk/ex-p-protection-concept-pressurization/ | [
"basis",
"iec_designation",
"north_american_designation"
] | null | null | null | null | null | null | null |
Maintain positive pressure with inert gas | protection concept | [
"category"
] | ex-p-ex-px-ex-py-ex-pz-protection-concept-purged-pressurized | Ex p (Ex px, Ex py, Ex pz) | Purged/Pressurized | https://exknowledge.com/pages/nec-500-vs-atex-iec.html | Purged/Pressurized | Ex p (Ex px, Ex py, Ex pz) | IEC 60079-2 | Maintain positive pressure with inert gas | https://referencesource.org/ex-classification-system-crosswalk/ex-p-ex-px-ex-py-ex-pz-protection-concept-purged-pressurized/ | [
"basis",
"iec_designation",
"iec_standard",
"north_american_designation"
] | null | null | null | IEC 60079-2 | null | null | null |
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