1. A HIGH SPEED ELECTRICAL GROUND SWITCH, COMPRISING: A STATIONARY SWITCH CONTACT ASSEMBLY INCLUDING A PAIR OF CONTACT PLATES FORMING THE JAWS OF A STATIONARY CONTACT WITH A V-SHAPED SLOT FORMED BETWEEN SAID PLATES AT ONE END OF SAID PLATES AND WITH A PORTION OF SAID PLATES EXTENDING SUBSTANTIALLY PARALLEL FROM SAID SLOT TOWARD THE OTHER END OF SAID PLATES, AND A RESILIENT STOP MEMBER POSITIONED ADJACENT THE END OF THE PARALLEL PORTIONS OF SAID PLATES; RESILIENT BACKUP MEANS FOR SAID CONTACT PLATES; A MOVABLE SWITCH CONTACT ASSEMBLY INCLUDING A CONTACT BLADE ATTACHED TO ONE END OF A TUBULAR ROD WHOSE OTHER END IS MOUNTED FOR ROTATION ON A SUPPORT MEMBER BETWEEN A FIRST POSITION WHERE SAID CONTACT BLADE IS REMOTE FROM SAID STATIONARY CONTACT PLATES AND A SECOND POSITION WHERE SAID BLADE ENGAGES SAID JAWS OF SAID CONTACT; AN INSULATOR STACK INCLUDING A PLURALITY OF INSULATING