# T3B — Certification marks and hazardous-area classifications: cross-market equivalences

For T3B, applies to is 165º C (329ºF), verified against its source on 2026-08-11.

- **Designation:** T3B _(verified: appears in the quote below)_
- **Applies to:** 165º C (329ºF) _(verified: appears in the quote below)_

## What the source says

> 165º C (329ºF) T3B

## Source

- https://www.euroswitch.com/wp-content/uploads/euroswitch-hazardous-area-guide_V6.pdf

Last verified: 2026-08-11. Review by: 2027-08-11.
Part of [Certification marks and hazardous-area classifications: cross-market equivalences](https://referencesource.org/certification-standards-equivalence/).