Replace the existing first paragraph by the following new first paragraph: This International Standard applies to arc fault detection devices (AFDD) for household and similar uses, intended to be used in a.c. circuits, for rated voltages not exceeding 440 V a.c, with rated frequencies of 50 Hz, 60 Hz or 50/60 Hz and rated currents not exceeding 63 A. Modify the beginning of fourth paragraph in order to read: These devices are intended to mitigate the risk of fire in a final circuit of a fixed installation & . Remove the eighth and ninth paragraphs. Add at the end of this clause the following new note: NOTE 5 AFDD for d.c. applications are under consideration.