IEC 60947-3:2012 pdfダウンロード。Low-voltage switchgear and controlgear – Part 3: Switches, disconnectors, switch-disconnectors and fuse-combination units 1 General The provisions of the general rules dealt with in IEC 60947-1 are applicable to this part, where specifically called for. Clauses and subclauses, tables, figures and appendices of the general rules thus applicable are identified by reference IEC 60947-1 , e.g., 4.3.4.1 of IEC 60947-1 ,Table 4 of IEC 60947-1 , or Annex A of IEC 60947-1 . 1 .1 Scope and object This part of IEC 60947 applies to switches, disconnectors, switch-disconnectors and fuse combination units to be used in distribution circuits...