UNE-EN IEC 61643-331:2020 Components for low-voltage surge protection - Part 331: Performance requirements and test methods for metal oxide varistors (MOV) (Endorsed by Asociación Española de Normalización in June of 2020.)
2020UNE-EN IEC 61643-331:2020 Components for low-voltage surge protection - Part 331: Performance requirements and test methods for metal oxide varistors (MOV) (Endorsed by Asociación Española de Normalización in June of 2020.)