Electrical equipment needs CE marking when it is placed on the EU market and at least one applicable EU law requires the mark. The answer depends on the finished product, its electrical characteristics and intended use—not simply on whether it contains electrical parts or will be installed in Europe.

Many industrial products fall under more than one set of requirements. A control panel, for example, may need to satisfy rules on electrical safety, electromagnetic compatibility and hazardous substances. Equipment outside the voltage range of the Low Voltage Directive may still need CE marking under another law. For quality and safety teams, the first task is therefore to establish which legislation applies to the complete product before deciding what evidence is needed.

Start with the product and its intended use

CE marking is linked to specific EU product legislation. It indicates that the manufacturer has taken responsibility for conformity with all applicable requirements that provide for the marking. It is not a general European quality certificate, and there is no single CE directive covering every electrical product.

Before assessing legislation, define the item that will be supplied: its model and variants, rated voltage, functions, interfaces, intended users and installation environment. The boundary matters. A motor, a variable-speed drive and a complete machine incorporating both can each require a separate assessment according to what is placed on the market and the laws applicable to it.

The date and nature of the transaction matter too. In EU product legislation, placing on the market generally means the first making available of an individual product on the EU market. A product imported from outside the EU may therefore be subject to the rules in force when it first enters that market, even if it was used elsewhere. Making equipment available includes commercial supply whether payment is involved or not.

Which EU rules commonly trigger CE marking?

For electrical equipment compliance in Europe, the following laws are often relevant. They have different scopes and exclusions, so a product should not be assigned to them solely because of its name.

Low Voltage Directive: electrical safety within a defined voltage range

The Low Voltage Directive, 2014/35/EU, generally applies to electrical equipment designed for use with a voltage rating between 50 and 1,000 V AC or between 75 and 1,500 V DC. Equipment in scope must meet its safety objectives and carry CE marking before being placed on the market.

Use the equipment’s rated voltage and intended use when assessing the range; a momentary internal voltage or a single component’s rating does not, by itself, settle the classification of the finished product. The directive also excludes specified categories, including electrical equipment for use in an explosive atmosphere and certain specialist equipment.

Being below 50 V AC or 75 V DC does not automatically remove the need for CE marking. A low-voltage electronic controller can still fall under electromagnetic compatibility, radio equipment or hazardous-substances rules, depending on its design and use. Conversely, equipment outside the Low Voltage Directive’s range is not automatically covered by a different CE law: its scope still has to be checked.

EMC Directive: emissions and immunity

The Electromagnetic Compatibility Directive, 2014/30/EU, addresses electromagnetic disturbance and immunity. In broad terms, covered equipment must not generate excessive interference and must have sufficient immunity to operate as intended in its electromagnetic environment.

Its scope is not determined by the Low Voltage Directive’s voltage thresholds. A low-voltage drive controller, for instance, may require an EMC assessment even where the Low Voltage Directive does not apply. Equipment intended for an industrial environment should be assessed against the relevant conditions and standards for that use; a satisfactory result in a different configuration does not automatically establish conformity for the product supplied.

Fixed installations have a distinct treatment under the EMC rules. A site-built installation is not simply assessed as though it were one mass-produced appliance. Apparatus made available separately for incorporation into a fixed installation will generally be subject to the applicable apparatus requirements, although the directive provides a specific route for apparatus intended solely for a particular fixed installation and not otherwise commercially available.

RoHS, radio equipment and other product-specific laws

The RoHS Directive, 2011/65/EU, restricts certain hazardous substances in electrical and electronic equipment within its scope. It also provides for CE marking. Its coverage and exclusions should be checked independently of the Low Voltage and EMC directives; passing electrical safety or EMC tests does not establish RoHS conformity.

Where equipment intentionally transmits or receives radio waves for communication or radiodetermination, the Radio Equipment Directive, 2014/53/EU, may apply. Adding a wireless module can therefore change the compliance assessment of the finished product. A module supplier’s documents are useful evidence, but the manufacturer must assess the complete equipment and its intended combinations.

Other legislation can be decisive for particular equipment. Examples include rules for equipment intended for use in potentially explosive atmospheres and machinery legislation for products within its scope. An electrical assembly may also be subject to sector-specific exclusions or requirements. The responsible team should check the scope, definitions and exclusions of each potentially applicable act rather than assume that one directive replaces all others.

Four situations that often cause confusion

• Components supplied to another manufacturer. A component is not exempt merely because it will be incorporated into a larger product. Whether it needs CE marking depends on the applicable legislation and whether it falls within that legislation’s scope. The finished product manufacturer still has responsibilities for the complete product.
• Industrial equipment sold only to professionals. Professional use does not, by itself, remove CE obligations. Intended users and installation arrangements can affect the assessment, instructions and safeguards, but the relevant legislation must still be checked.
• Spare parts and replacement equipment. Classification depends on what is being supplied, when it was first placed on the EU market and the applicable rules. A replacement part should not automatically inherit the compliance position of the original machine or installation.
• Modified equipment. Maintenance or repair does not automatically create a new product. A substantial modification that changes the equipment’s original performance, purpose or type, however, can require a fresh assessment. The extent of the change and the applicable legislation matter.

These distinctions are especially important for control cabinets assembled from compliant devices. CE marks on individual breakers, drives or power supplies do not automatically establish conformity of the assembled cabinet. Wiring, protective arrangements, thermal conditions, electromagnetic interactions and the cabinet’s intended function all affect the assessment of the finished assembly.

What should the compliance file contain?

Once the applicable legislation is identified, the manufacturer must follow the conformity assessment procedure required by each act. For many products covered by the Low Voltage, EMC and RoHS directives, the manufacturer can use the applicable internal production control procedure without a notified body. Other legislation or product categories may require third-party involvement, so that decision must be made act by act.

A practical file for quality and safety review should allow another competent person to understand the product, the requirements applied and the basis for the conformity decision. Depending on the legislation and product, it will normally include:

• A product description, intended use, ratings, drawings and identification of relevant variants.
• A documented assessment of applicable legislation and relevant hazards or risks.
• A list of standards or other technical specifications used, including the versions applied.
• Design calculations, inspections, test reports and component evidence relevant to the finished product.
• Information on production controls, instructions, warnings and product identification.
• A copy of the EU Declaration of Conformity.

Harmonised European standards can provide a presumption of conformity with the requirements they cover when their references are cited in the Official Journal of the European Union and their conditions of use are met. They are generally voluntary; a manufacturer using another technical route must still demonstrate that the applicable legal requirements are met. Check the scope of each standard and any limits on the cited reference, especially where only part of a standard supports a particular requirement.

The EU Declaration of Conformity identifies the manufacturer, product and applicable legislation, and records the manufacturer’s responsibility for conformity. Where several applicable acts require an EU declaration, a single declaration can cover those acts. The CE mark is then affixed in accordance with the relevant rules, normally visibly, legibly and indelibly on the product or its data plate, with alternatives where the nature of the product prevents this.

A test report alone is not the declaration, and a supplier’s “CE certificate” does not transfer the manufacturer’s legal responsibility. Reports should be checked against the actual model, hardware and software configuration, supply conditions and intended installation. A report for a similar product may support the assessment, but any differences need a technical justification.

Check the market and the responsible party

“Europe” is broader than the EU. CE marking is also relevant across the European Economic Area, but requirements outside that area should be checked for the destination market. Great Britain has its own product-marking framework, including UKCA, and accepts CE marking for many product categories under its rules. Northern Ireland’s position is different again. Confirm the applicable legislation and marking route for the particular product and destination before shipment.

The manufacturer is the party that places the product on the market under its name or trademark and is responsible for the conformity assessment and declaration. An importer must carry out its own checks before placing a product from a non-EU country on the EU market, including checking that the manufacturer has completed the required assessment and prepared the documentation. Distributors also have verification duties. A company that sells a product under its own name or makes a modification affecting conformity can assume manufacturer obligations.

For a release decision, the most useful question is whether the file supports the exact item being shipped: its model, ratings, functions, installation conditions and destination. If those differ from the assessed configuration, resolve the difference before relying on the existing declaration or affixing the mark.