The Classes & Divisions system is used in North-America. These days North-America also uses IECEx.
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ATEX Zone 0IECExClass I, Div I
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ATEX Zone 1IECExClass I, Div I
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ATEX Zone 1/21IECExClass I, Div I
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ATEX Zone 2IECExClass I, Div II
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ATEX Zone 1/21IECExClass I, Div I
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ATEX Zone 1/21IECExClass I, Div I
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ATEX Zone 2/22IECExClass I, Div II
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ATEX Zone 1/21IECExClass I, Div II
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ATEX Zone 2/22IECExClass I, Div II
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ATEX Zone 1/21IECExClass I, Div I
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ATEX Zone 1/21IECExClass I, Div I
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ATEX Zone 1/21IECExClass I, Div I
