SIST EN 12520:2025/oprA1:2026

SIST EN 12520:2025/oprA1:2026 is a draft amendment to EN 12520:2024, published by SIST from CEN/TC 207. It updates the safety, strength and durability requirements for domestic seating for adults and revises the test language for finger entrapment and related opening hazards.

What does SIST EN 12520:2025/oprA1:2026 specify?

SIST EN 12520:2025/oprA1:2026 specifies changes to the European standard for domestic seating, not a standalone product standard. In practice, it refines how manufacturers and test laboratories check seating for adults, especially around entrapment hazards, moving parts and durability test interpretation.

The amendment keeps the focus on domestic seating and the existing exclusions in the base standard, while updating the wording of several safety clauses and annexes. The main practical effect is to align the document more closely with finger-entrapment testing and to remove the old shear-and-compression test route from Annex C.

What are the key requirements of SIST EN 12520:2025/oprA1:2026?

The amendment changes the hazard checks and test methods that support the domestic-seating requirements in EN 12520:2024. For a manufacturer or test house, the main task is to apply the updated wording when deciding which openings, moving parts and load applications must be checked.

Safety definitions and hazard identification

Clause 3 adds definitions for shear point and compression point. These definitions matter because the safety clauses use them to identify where moving parts can cut or trap a finger or other object.

Clause 5.1.2 also tightens the wording for holes in tubular or rigid components by tying the check to accessible parts. In practice, this tells the reader to assess openings only where a person can reasonably reach them.

Setting up, folding and moving mechanisms

Clause 5.1.3.2 adds a specific rule for adjustable backrests when the user must leave the product to change the inclination. The backrest adjustment is treated as a setting up and folding operation, so the hazard review must follow that use case.

Clause 5.1.3.3 removes the old statement that a requirement is met if no hazard is found in the deleted C.2.3 test. That matters because the compliance path changes and the deleted shear-and-compression test is no longer the route named here.

Normal use and durability evidence

Clause 5.1.3.4 changes the wording around shear and compression points during use, and states that the loads and application points used for durability tests 6 and 7 in Table 1 are representative of normal use. For readers, that means the durability tests are not just laboratory exercises - they are intended to stand in for typical use conditions.

Annex changes

Annex A.2.1 deletes the general positioning text that previously referred to EN 1728:2012, 5.2. Annex C is retitled so it covers finger entrapment only, and Clause C.2 is deleted in full. The practical result is a narrower, more focused finger-entrapment method.

What terms does SIST EN 12520:2025/oprA1:2026 define?

• Shear point - a place where two moving parts pass each other like scissors and can cut something in between.
• Compression point - a place where two surfaces move toward each other without crossing and reduce the gap or volume between them.
• Finger entrapment - the hazard of a finger becoming caught in an opening or between parts during use or testing.
• Setting up and folding - operations where the seating is opened, closed or otherwise prepared for use.
• Non-electrically powered mechanisms - moving parts operated without electrical power, such as manual folding or reclining actions.
• Suspended flexible material - flexible seat material supported in a slung or hanging arrangement, which affects the loading point.

Who uses SIST EN 12520:2025/oprA1:2026?

SIST EN 12520:2025/oprA1:2026 is used by furniture manufacturers, design engineers, test laboratories and quality managers working on domestic seating. Buyers and specifiers also use it when they need a technical basis for accepting seating products. The amendment is especially relevant for teams checking folding actions, backrest adjustment, finger entrapment risk and durability test setup.

What changed in SIST EN 12520:2025/oprA1:2026 from the previous edition?

SIST EN 12520:2025/oprA1:2026 modifies EN 12520:2024. The amendment:

• narrows Annex C so it specifies finger-entrapment methods only
• adds definitions for shear point and compression point
• updates the wording for holes in tubular or rigid components
• treats some adjustable backrest changes as setting up and folding
• removes the old references to C.2.3 hazard checks
• updates the durability-use wording in 5.1.3.4
• deletes the Annex A positioning paragraph that referred to EN 1728:2012
• revises the finger-entrapment method in Annex C
• deletes Clause C.2 entirely

Which standards are used with SIST EN 12520:2025/oprA1:2026?

SIST EN 12520:2025/oprA1:2026 is the amendment to EN 12520:2024. The amendment also removes the Annex A text that previously referred to EN 1728:2012, 5.2 for positioning the seating on the test surface.

What does the SIST EN 12520:2025/oprA1:2026 document contain?

SIST EN 12520:2025/oprA1:2026 is a clause-by-clause amendment document. It contains the European foreword, a contents list, and ten modification items covering the scope, terms and definitions, safety clauses, Annex A, and Annex C.

The document points readers to the parts of the base standard that are affected rather than rewriting the whole standard. It includes references to Table 1, Table C.1, Figures C.1 to C.3, and the annexes for durability, rationale and loading-point setup. For implementers, this is a working document for updating tests, inspection routines and product documentation against EN 12520:2024.