Article 3 of Machinery Regulation 2023/1230: the 34 definitions that determine whether your product is correctly classified

Direct answer: Article 3 of Regulation (EU) 2023/1230 sets out 34 legal definitions — machinery, partly completed machinery, safety component, substantial modification, placing on the market, putting into service, manufacturer, authorised representative, among others — that determine exactly which obligations fall on each economic operator. Wrongly classifying a product as \"machinery\" when it is actually \"partly completed machinery\", or confusing \"placing on the market\" with \"putting into service\", completely changes the applicable conformity assessment procedure, who signs the EU Declaration of Conformity, and when the legal obligation arises. Before applying any other article of the Regulation, these terms must be pinned down with precision.

Article 3 is not a decorative vocabulary section: it is the piece that translates the technical language of engineering into the legal language that triggers obligations. An engineer may know perfectly well what their product is from a functional standpoint, but if the quality department fails to translate that technical reality into the exact categories of Article 3, the conformity file may be built on an incorrect foundation from day one. We already analysed in our article on the scope of application (Articles 1 and 2) which products fall within the Regulation; this article goes one step further and explains under which legal label each one falls.

What distinguishes \"machinery\" from \"partly completed machinery\" under Article 3?

This is the distinction that derails the most conformity files at the design stage. Article 3.1 defines machinery as an assembly, fitted with or intended to be fitted with a drive system other than directly applied human or animal effort, which has at least one moving part, joined together for a specific application. Partly completed machinery, by contrast, is an assembly which almost constitutes machinery but which cannot, on its own, perform a specific application: it needs to be incorporated into or assembled with other machinery or other partly completed machinery to constitute complete machinery.

The practical consequence is direct: complete machinery requires CE marking and an EU Declaration of Conformity; partly completed machinery requires a declaration of incorporation and a set of assembly instructions, but does not carry CE marking until it is integrated into the final assembly. Confusing the two categories causes cascading errors: CE marking is applied to something that should not yet carry it, or the declaration of incorporation is omitted for a component that is, in fact, already a functionally autonomous machine.

When is a component a \"safety component\", and when is it just a part?

Article 3.3 defines a safety component as one that performs a safety function, is placed on the market independently, whose failure or malfunction endangers the safety of persons, and which is not necessary for the machinery to function or which can be replaced by ordinary components. The indicative — not exhaustive — list appears in Annex IV, which we analyse in detail in our article dedicated to Article 7 on safety components.

What is the difference between \"placing on the market\" and \"putting into service\"?

Article 3 draws a precise distinction between these two moments because they do not always coincide in time or in the responsible party. \"Placing on the market\" (Art. 3.24) is the first making available of machinery on the Union market. \"Making available on the market\" (Art. 3.25) is any supply for distribution or use on the Union market in the course of a commercial activity, whether in return for payment or free of charge. \"Putting into service\" (Art. 3.26) is the first use, in accordance with its intended purpose, in the Union.

The practical consequence: a manufacturer may place machinery on the market in 2026 — a moment at which it must already comply with the Regulation if placing on the market takes place after 20 January 2027 — and that same machine may not be put into service until months later, after installation on-site. The manufacturer's liability is triggered at the moment of placing on the market or putting into service, whichever occurs first, a nuance that is critical in capital equipment projects with long installation timelines.

What is a \"substantial modification\" and why does it reopen the entire conformity process?

Article 3.20 defines a substantial modification as a modification of machinery or a related product, by physical or digital means, after it has been placed on the market or put into service, which is not foreseen or planned by the manufacturer in its initial risk assessment, and which affects the safety of the machinery by generating a new risk or increasing an existing risk. This definition is one of the most significant innovations of Regulation 2023/1230 compared with the previous Directive, because it expressly extends the concept to digital modifications — software or firmware updates — and not only to physical interventions.

Who is the \"manufacturer\" and who is the \"authorised representative\" under Article 3?

Article 3.7 defines manufacturer as any natural or legal person who manufactures machinery or a related product, or who has such a product designed or manufactured, and markets it under its name or trademark. The authorised representative (Art. 3.9) is any natural or legal person established in the Union who has received a written mandate from a manufacturer to act on its behalf for specific tasks. An integrator that assembles several items of partly completed machinery from different suppliers to form a production line becomes, at that point, the manufacturer of the resulting machinery for the purposes of the Regulation, even though it has not physically manufactured any component.

IgeraIndustria in action: automatic classification under Article 3

Before drafting the technical file, IgeraIndustria lets you ask, in natural language, which Article 3 category a specific product falls into, citing the exact clause and explaining the practical consequence for CE marking and the corresponding declaration.

Why does a wrongly applied definition compromise the entire technical file?

A quality department that misclassifies its product at the Article 3 stage carries that error through the entire process: into the applicable conformity assessment procedure, into the essential health and safety requirements of Annex III that we analyse in our article on Article 8, and into the exact content of the EU Declaration of Conformity. A real case: a manufacturer of automated packaging systems treated a heat-sealing unit for months as an \"accessory\" with no CE marking obligations of its own, when it actually met the definition of machinery under Art. 3.1 because it incorporated its own electric drive system and operated autonomously in bench tests. The reclassification forced a full repeat of the conformity assessment before the product could be placed on the market.

Frequently asked questions about Article 3 and its definitions

Can the same part be partly completed machinery in one contract and a safety component in another?

Yes. Classification depends on how the product is marketed and the function it performs in each specific case, not on a fixed label attached to the product. The same braking system may be sold as partly completed machinery integrated into a larger assembly under one contract, and as an independent safety component under Annex IV in another, if it is marketed separately with an autonomous safety function.

Who assumes the obligations when an integrator assembles several items of partly completed machinery?

The integrator that assembles the partly completed machinery to form a functional unit becomes the manufacturer of the resulting machine under Art. 3.7, and must issue the full EU Declaration of Conformity for that assembly, even though it did not physically manufacture any of the individual components.

Is a software update always a substantial modification?

Not always. It only qualifies as such if it generates a new risk or aggravates an existing one and was not foreseen in the manufacturer's original risk assessment, under Art. 3.20. A minor security update that fixes a bug without altering the risk profile does not, on its own, constitute a substantial modification.

What is the difference between \"making available\" and \"placing on the market\"?

Placing on the market (Art. 3.24) is the first making available; making available on the market (Art. 3.25) is any subsequent supply, including successive deliveries of the same model to different customers. The first marks the start of the product's legal traceability; the second recurs every time that product — or identical units — changes hands on the market.

Can the authorised representative assume all of the manufacturer's obligations?

No. Article 3.9 limits its action to the specific tasks set out in the written mandate. Certain obligations — such as drawing up the technical file or ensuring that the design meets the essential requirements — remain the manufacturer's non-delegable responsibility, even though the authorised representative may act as the point of contact with market surveillance authorities.

Does IgeraIndustria help resolve classification doubts between the definitions in Article 3?

Yes. IgeraIndustria compares the product's technical description against the 34 definitions in Article 3 and generates a report with the applicable definition, the exact clause cited and the consequences for CE marking, the declaration, and the conformity assessment procedure.