# Explosion-proof (XP), intrinsically safe (IS) — North American vs IEC/ATEX explosion protection designations

For Explosion-proof (XP), intrinsically safe (IS), category is system attribute; iec / atex designation is IEC-aligned types (Ex d, Ex i, Ex e, etc.); basis or note is Protection concept, recorded from its source on 2026-08-06.

- **Category:** system attribute _(our reading, not quoted from the source)_
- **North American designation:** Explosion-proof (XP), intrinsically safe (IS) _(verified: appears in the quote below)_
- **IEC / ATEX designation:** IEC-aligned types (Ex d, Ex i, Ex e, etc.) _(verified: appears in the quote below)_
- **Basis or note:** Protection concept _(verified: appears in the quote below)_

## What the source says

> 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.)

## 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/).