ATEX vs IECEx: What Product-Data Teams Need to Know

ATEX vs IECEx compared for product-data teams: scope, marking, certification, and how to enrich hazardous-area records accurately.

When a procurement team at a chemical plant rejects your product record for a gas detector or explosion-proof junction box, the reason is almost always a compliance attribute that is missing, free-text, or wrong. The ATEX vs IECEx distinction is the most common culprit: distributor catalogs routinely collapse both certifications into a single unstructured field, or record only one when the product carries both. Claro’s enrichment pipeline resolves this by extracting each certification from supplier datasheets, normalising the marking strings against the IEC 60079 standard, and writing clean, source-linked values back into your PIM or ERP — so every SKU that carries a hazardous-area rating has the right attribute structure before it reaches a buyer.

Both frameworks answer the same engineering question — is this equipment safe to operate in a potentially explosive atmosphere? — but they live in different legal and geographic contexts. ATEX is a mandatory European Union regulatory regime; IECEx is a voluntary international certification scheme. A single physical product frequently carries both. The catalog task is to capture each one as a distinct, structured attribute rather than collapsing them into a generic free-text note that buyers and procurement systems cannot filter on.

At a glance

Dimension	ATEX	IECEx
Nature	EU legal directive (mandatory in EU/EEA)	Voluntary international certification scheme
Geography	European Union and EEA market access	Global — accepted in many countries that recognise IEC standards
Issued by	EU notified bodies under the directive	IECEx-accredited certification bodies (ExCBs)
Document	EU Declaration of Conformity plus Ex hexagon marking	IECEx Certificate of Conformity (downloadable from the online system)
Marking	CE mark plus the Ex hexagon and category code	Ex marking with code referencing IEC 60079 series
Underlying standards	Harmonised EN standards, largely aligned with IEC 60079	IEC 60079 series directly

The technical core is shared: both rely on the IEC 60079 family for protection concepts (flameproof, intrinsic safety, increased safety), gas and dust groups, temperature classes, and equipment protection levels. The divergence is administrative — who certifies, what document proves it, and where the certification carries legal weight.

Before and after: messy vs trusted hazardous-area records

The gap between a compliant record and a rejected one usually lives in how the attributes are structured, not whether the product is certified at all.

Before (messy)	After (trusted — Claro-enriched)
ATEX/IECEx combined into one free-text note: 'ATEX II 2G IECEx'	Separate fields: ATEX marking = 'II 2G Ex d IIB T4 Gb', IECEx cert = 'IECEx DEK 12.0043X'
Temperature class missing or inferred from description	Structured T-class field (e.g. T4) extracted from datasheet with source link
Gas group absent — buyers cannot filter by zone compatibility	Gas group field (e.g. IIB) populated and mapped to zone 1 applicability
No source document — compliance claims unverifiable	Each attribute linked to the supplier datasheet page it was extracted from
Single certification recorded even when product carries both	Both ATEX and IECEx attributes present, independently validated

When to use each

ATEX

ATEX applies when a product is placed on the market or put into service inside the European Union. It is a legal requirement, not a marketing badge. If your catalog serves EU buyers — directly or through resellers — the ATEX category (for example, Category 2G for zone 1 gas atmospheres) is a mandatory filterable attribute. An MRO distributor supplying a chemical plant in Germany needs the ATEX marking to be exact and structured, because procurement and EHS teams reject records that lack it or carry it only as a text string. For a full breakdown of zone classification and marking syntax, see the ATEX zone classification glossary entry.

IECEx

IECEx is the route to certification recognition across borders. Because its certificates are issued against the IEC 60079 standards and published in a public online system, a manufacturer can use one IECEx certificate as the basis for market access in multiple countries that accept the scheme. For an industrial distributor selling into the Middle East, Australia, or Southeast Asia, IECEx is frequently the certification customers ask for. Capture the certificate number as a structured field so it can be validated against the official IECEx database.

What the enrichment pipeline looks like

In practice the decision is rarely “either or.” The enrichment task is to detect which certifications a product actually holds from supplier datasheets, normalise the marking strings against the IEC 60079 grammar, and attach a source reference to each claim.

Ingest supplier datasheets

Pull PDFs, structured feeds, or HTML spec pages for the hazardous-area SKUs in your catalog. Claro ingests all three formats without manual reformatting.
Extract and parse marking strings

Identify ATEX and IECEx tokens in the raw text. Parse each against the IEC 60079 marking grammar: equipment group, category, protection type, gas/dust group, temperature class, and EPL. Flag any string that fails validation rather than passing a bad value downstream.
Split into structured attributes

Write ATEX marking, ATEX category, IECEx certificate number, gas group, temperature class, and EPL into separate fields. Never merge into one free-text column.
Attach source links

Link each populated attribute to the supplier document page it came from. This makes every compliance claim independently verifiable and audit-ready — critical for EHS review processes.
Write back to PIM or ERP

Claro pushes the validated, sourced attributes directly into your existing PIM or ERP system. No manual re-keying, no separate spreadsheet handoff.

The same discipline applies to any compliance attribute in your catalog — a furniture flammability rating, a CPG ingredient declaration, or an IP ingress-protection code. A compliance attribute is only useful if it is structured, verifiable, and traceable.

Comparison

NEMA vs IP Ratings

How the two enclosure-protection systems map to each other across regions.

Glossary

ATEX Zone Classification

Zone 0, 1, and 2 defined, with equipment category mapping and marking syntax.

Tool

ATEX Marking Validator

Parse and check an ATEX marking string for valid category, group, and temperature class.

Tool

IP Rating Validator

Validate IP ingress-protection codes alongside hazardous-area attributes.

Guide

Enrichment Without Hallucination

Fill technical attributes from real sources instead of guessed values.

Guide

What a Complete Product Record Looks Like

The compliance and spec fields buyers expect on an industrial SKU.

FAQ

Is IECEx the same as ATEX?

No. They certify against largely the same IEC 60079 technical standards, but ATEX is a mandatory EU legal directive while IECEx is a voluntary international certification scheme. A product can hold both, and each should be stored as its own catalog attribute with a separate marking string and certificate reference.

Can a product be ATEX certified but not IECEx, or the other way around?

Yes. A manufacturer selling only into the EU might pursue ATEX alone, while one targeting markets that recognize IECEx might hold an IECEx certificate without separate ATEX paperwork. Many products carry both because it widens market access. Always record what the supplier datasheet actually states, and flag any record where the source document is missing.

Does IECEx replace ATEX for selling in Europe?

No. To place equipment on the EU market you still need to meet ATEX requirements, including CE marking and an EU Declaration of Conformity. An IECEx certificate can support the technical assessment, but it does not by itself grant EU market access. Treating the two as equivalent is a common catalog error that causes rejected orders.

How should a distributor store ATEX and IECEx data in a catalog?

Use separate structured fields: one for the ATEX marking string and equipment category, one for the IECEx certificate number, and a shared set of fields for the underlying technical attributes such as gas or dust group, temperature class, and equipment protection level. Attach a source document reference to each value so claims can be independently verified. Claro extracts and normalises these fields from supplier datasheets and writes clean, sourced values back into your PIM or ERP.

Where can I verify an IECEx certificate?

IECEx Certificates of Conformity are published in the official IECEx online system, where you can look up a certificate by its number. Storing that certificate number as a structured attribute in your catalog makes each compliance claim independently verifiable and audit-ready.

Why do so many catalog records collapse ATEX and IECEx into a single field?

Supplier datasheets often present both certifications on the same line, and manual data-entry staff copy the string verbatim into one free-text field. The fix is attribute-level extraction: parse the marking string, identify which tokens belong to ATEX and which to IECEx, and write each into its own structured field with a confidence score and source link. That is exactly what Claro’s enrichment pipeline does at catalog scale.