# Purged/Pressurized — North American vs IEC/ATEX explosion protection designations

For Purged/Pressurized, category is protection concept; iec / atex designation is Ex p (Ex px, Ex py, Ex pz); iec standard is IEC 60079-2; basis or note is Maintain positive pressure with inert gas, recorded from its source on 2026-08-06.

- **Category:** protection concept _(our reading, not quoted from the source)_
- **North American designation:** Purged/Pressurized _(verified: appears in the quote below)_
- **IEC / ATEX designation:** Ex p (Ex px, Ex py, Ex pz) _(verified: appears in the quote below)_
- **IEC standard:** IEC 60079-2 _(verified: appears in the quote below)_
- **Basis or note:** Maintain positive pressure with inert gas _(verified: appears in the quote below)_

## What the source says

> Purged/Pressurized | Ex p (Ex px, Ex py, Ex pz) | IEC 60079-2 | Maintain positive pressure with inert gas

## 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/).