5. A SWITCH COMPRISING A STATIONARY CONTACT, A ROTATABLE SHAFT, A SWITCH BLADE MOUNTED ON THE SHAFT AND MOVABLE WITH THE SHAFT IN AN ARCUATE PATH BETWEEN CLOSED AND OPEN POSITION INTO AND OUT OF ENGAGEMENT WITH THE STATIONARY CONTACT, AND RELEASABLE STORED ENERGY MEANS DISPOSED ADJACENT TO THE BLADE FOR APPLYING AN IMPULSE OF FORCE TO THE BLASE TRANSVERSELY SUBSTANTIALLY AT THE CENTER OF PERCUSSION TO ACTUATE THE BLADE TOWARD THE STATIONARY CONTACT, SAID STORED ENERGY MEANS BEING DISENGAGED FROM THE BLADE WHEN THE BLADE IS IN CLOSED POSITION.