NF C63-211/A1:1974 LOW-VOLTAGE SWITCHGEAR AND CONTROLGEAR. FUSES FOR A. C. CIRCUITS RATED 500 V. ADDITIONAL REQUIREMENTS : STRIKER FUSES - INDEPENDENT STRIKERS.
1974NF C63-211/A1:1974 LOW-VOLTAGE SWITCHGEAR AND CONTROLGEAR. FUSES FOR A. C. CIRCUITS RATED 500 V. ADDITIONAL REQUIREMENTS : STRIKER FUSES - INDEPENDENT STRIKERS.