# 2 levels (Div 1, Div 2) — North American vs IEC/ATEX explosion protection designations

For 2 levels (Div 1, Div 2), category is system attribute; iec / atex designation is 3 levels (Zone 0, 1, 2); basis or note is Risk gradation, recorded from its source on 2026-08-06.

- **Category:** system attribute _(our reading, not quoted from the source)_
- **North American designation:** 2 levels (Div 1, Div 2) _(verified: appears in the quote below)_
- **IEC / ATEX designation:** 3 levels (Zone 0, 1, 2) _(verified: appears in the quote below)_
- **Basis or note:** Risk gradation _(verified: appears in the quote below)_

## What the source says

> Risk gradation | 2 levels (Div 1, Div 2) | 3 levels (Zone 0, 1, 2) | 3 levels (Zone 0, 1, 2)

## Source

- https://exknowledge.com/pages/nec-500-vs-atex-iec.html

Last verified: 2026-08-06. Review by: 2028-08-05.
Part of [North American vs IEC/ATEX explosion protection designations](https://referencesource.org/ex-classification-system-crosswalk/).