Project requirements · Fire
CPR reaction-to-fire class (EN 50575, EN 13501-6)
A declared Euroclass for cables in buildings in the EU, with smoke (s), droplets (d) and acidity (a) classes.
Open in the designer with this requirement
Constructions that meet it
- Compounds chosen for the declared class: changes no layer: a property of the sheath compound. Compound choice and non-metallic volume reduction to reach the class (LSZH / FR compounds). Drawbacks: Only the maker's tests and DoP give the class.
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Tests
- EN 50575 + EN 13501-6:2018+A1:2022; tests EN 50399 (heat release, flame spread, smoke, droplets), EN 60332-1-2, EN 61034-2, EN 60754-2: classes Aca, B1ca, B2ca, Cca, Dca, Eca, Fca; s1 (s1a, s1b), s2, s3; d0, d1, d2; a1, a2, a3. Pass: Example limits quoted by a lab: B2ca FS ≤ 1.75 m, THR1200 ≤ 15 MJ, PHRR ≤ 30 kW, FIGRA ≤ 150 W/s; B1ca THR ≤ 10 MJ, PHRR ≤ 20 kW, FIGRA ≤ 120 W/s. s1 TSP and a1 limits not confirmed in a source read.
How specifications state it
Written as the full class, e.g. 'Cca-s1b,d1,a1' (Prysmian: escape routes), 'Dca-s2,d2,a2', backed by the maker's DoP.
Where it is asked for
- all cables permanently installed in EU buildings
- national rules set the class per building type
Sources
- EN 13501-6:2018+A1:2022 listing (iTeh) (quoted by others)
- HES Kablo, 'CPR classification in cables' (limits by class) (quoted by others)
- Prysmian Baltics, 'CPR and fire safety classes' (Cca-s1,d1,a1 escape routes; Dca-s2,d2,a2) (maker's catalogue)
- BASEC, 'The standards behind CPR cable classification' (2026) (quoted by others)