# Dust-ignition-proof — North American vs IEC/ATEX explosion protection designations

For Dust-ignition-proof, category is protection concept; iec / atex designation is Ex t (Dust protection by enclosure); iec standard is IEC 60079-31; basis or note is Prevent dust ingress and limit surface temperature, recorded from its source on 2026-08-06.

- **Category:** protection concept _(our reading, not quoted from the source)_
- **North American designation:** Dust-ignition-proof _(verified: appears in the quote below)_
- **IEC / ATEX designation:** Ex t (Dust protection by enclosure) _(verified: appears in the quote below)_
- **IEC standard:** IEC 60079-31 _(verified: appears in the quote below)_
- **Basis or note:** Prevent dust ingress and limit surface temperature _(verified: appears in the quote below)_

## What the source says

> Dust-ignition-proof | Ex t (Dust protection by enclosure) | IEC 60079-31 | Prevent dust ingress and limit surface temperature

## 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/).