Plugs, socket-outlets and couplers for industrial purposes - Part 2: Dimensional interchangeability requirements for pin and contact-tube accessories
工业用插头、插座和耦合器.第2部分:插针和接触管附件的尺寸互换性要求
Applies to plugs and socket-outlets, cable couplers with a rated
operating voltage not exceeding 690 V, 500 Hz and a rated current
not exceeding 125 A., primarily intented for industrial use,
either indoors or outdoors.