... appliances mainly by frame, isolating switch (or fuse charging separate switch), vacuum interr../upter, grounding switch, operating mechanism and other components ... , the CO can be fast operation. Isolation switch, vacuum switch, grounding switch interlock each other in order to prevent misuse. ... rod 5, the bracket 6 interr upter 7, 8 Earth knife static contact, insulator 9, ground knife 10, ground ...