Artifact GuideEU

Machinery Regulation safety components

Regulation (EU) 2023/1230 treats safety components as related products when they are independently placed on the Union market and meet the regulation's safety-function definition.

Use this page to classify a component, choose the conformity assessment route, and collect the technical-file, declaration, and CE-marking evidence needed before placing it on the market.

Author
Sorena AI
Published
May 9, 2026
Updated
May 9, 2026
Sections
5

Structured answer sets in this page tree.

Primary sources
3

Cited legal and guidance references.

Publication metadata
Sorena AI
Published May 9, 2026
Updated May 9, 2026
Overview

A safety component is not just any part that helps a machine operate safely. Under Regulation (EU) 2023/1230, it is a physical or digital component, including software, designed or intended to fulfil a safety function, independently placed on the market, whose failure or malfunction endangers persons, and that is not necessary for the product to function or can be replaced by a normal component.

Section 1

When a component is in scope

Article 2 lists safety components as related products within the Machinery Regulation's scope. That matters because a safety component placed on the market as its own product follows the machinery-and-related-product obligations, not the partly completed machinery declaration route.

Use the Article 3 definition as a gating test. The component must be physical or digital, may include software, must be designed or intended for a safety function, must be independently placed on the market, and its failure or malfunction must endanger the safety of persons. The definition also excludes components that are necessary for the product to function unless a normal component may be substituted for that function.

  • Record the safety function and the protective measure it supports.
  • Confirm whether the component is independently placed on the Union market rather than only supplied inside finished machinery.
  • Do not classify an identical replacement safety component supplied by the original manufacturer as in-scope when Article 2(2)(a) excludes that spare-part case.
  • Treat software and digital components as candidates where they perform the safety function and meet the independent-market condition.
Section 2

EHSR and risk assessment record

A safety component that is a related product may be made available or put into service only if it meets the applicable essential health and safety requirements in Annex III when properly installed, maintained, and used as intended or under reasonably foreseeable conditions.

The technical file should therefore start with a risk-assessment record, not with a label. Annex IV, Part A requires documentation of the risk-assessment procedure, the applicable EHSRs, protective measures for each applicable requirement, and residual risks where relevant.

  • Identify the hazardous situation the safety function is meant to eliminate or reduce.
  • Map each applicable Annex III EHSR to design measures, tests, inspections, calculations, or other verification evidence.
  • List any harmonised standards or common specifications applied, and identify any partial application or alternative technical specifications.
  • For safety-related software, keep enough source-code or programming-logic evidence to support authority checks when a competent national authority makes a reasoned request.
Section 3

Conformity assessment route

Article 25 chooses the conformity assessment route by Annex I status. If the safety component is in Annex I, Part A, the manufacturer must use one of the Article 25(2) procedures: EU type-examination with conformity to type, full quality assurance, or unit verification.

Annex I, Part A expressly includes safety components with fully or partially self-evolving behaviour using machine learning approaches ensuring safety functions. If a safety component is not listed in Annex I, Article 25(4) points to internal production control.

  • Check Annex I before selecting Module A because some safety components require a notified-body route.
  • Use Article 25(2) for Annex I, Part A safety components, including qualifying machine-learning safety components.
  • Use Article 25(4) internal production control only where the safety component is not in Annex I.
  • Keep the conformity-route decision in the technical documentation with the Annex I classification rationale.
Recommended next step

Classify safety components before release

Turn the safety-function definition, Annex I route, Annex IV file contents, declaration, and CE marking checks into a release review for components placed independently on the Union market.

Section 4

Technical documentation, declaration, and CE marking

Before placing a safety component on the market, the manufacturer must draw up Annex IV, Part A technical documentation and carry out, or have carried out, the relevant Article 25 conformity assessment procedure. Once compliance is demonstrated, the manufacturer draws up the EU declaration of conformity and affixes the CE marking.

The EU declaration of conformity must state that the applicable EHSRs have been demonstrated, follow the Annex V, Part A model structure, stay updated, and be translated into the required Member State language or languages. The CE marking must be visible, legible, indelible, and affixed before the related product is placed on the market or put into service.

  • Keep technical documentation and the EU declaration of conformity available for market surveillance authorities for at least 10 years after placing on the market or putting into service.
  • Include the EU declaration with the safety component or provide the internet address or machine-readable code where it can be accessed through the instructions and Annex III information.
  • Add the notified body's identification number after the CE marking where the selected Article 25 procedure requires notified-body involvement.
  • Ensure importer and distributor checks align with the manufacturer's CE marking, required documents, and instructions package.
Section 5

Examples grounded in Annex II

Annex II is an indicative list, so a component can still need analysis even if it is not named there. Use the list as a practical check against the definition and the market-placement facts.

Examples named in Annex II include protective devices designed to detect the presence of persons, logic units to ensure safety functions, emergency stop devices, two-hand control devices, valves with additional means for failure detection for dangerous movements, extraction systems for machinery emissions, and roll-over or falling-object protective structures.

  • Do not stop at the example name; confirm independent placing on the market and the safety-function failure consequence.
  • For guards, protective devices, logic units, and emergency stops, document whether the component is supplied as its own related product or only as part of finished machinery.
  • For software-driven or machine-learning safety functions, check both the Article 3 definition and the Annex I classification before choosing the conformity procedure.
Primary sources

References and citations

eur-lex.europa.eu
Referenced sections
  • Supports the Annex II indicative safety-component examples and the Annex I classification point for machine-learning safety components.
"INDICATIVE LIST OF SAFETY COMPONENTS"
iso.org
Referenced sections
  • Grounding source for machinery risk-assessment and risk-reduction methodology used to structure safety-component evidence.
"Risk assessment and risk reduction"
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