Low voltage surge protective devices - Part 21: Surge protective devices connected to telecommunications and signalling networks - Requirements and test methods (Endorsed by Asociación Espanola de Normalización in February of 2026.)
NORMA vydána dne 1.2.2026
Designation standards: UNE-EN IEC 61643-21:2026
Publication date standards: 1.2.2026
The number of pages: 94
Approximate weight : 313 g (0.69 lbs)
Country: Spanish technical standard
Kategorie: Technické normy UNE