JIS E5004-4 鉄道車両―電気品―第4部:交流遮断器 Railway applications -- Electric equipment for rolling stock -- Part 4: Electrotechnical components -- Rules for a.c. circuit-breakers JIS E5004-5 鉄道車両―電気品―第5部:高圧ヒューズ Railway applications -- Electric equipment for rollin...