force on insulative cord 66 to cause the insulating wafer 62 to slide out from between spring contact 60 and terminal 58 thereby causing current to flow through heating element 64 igniting solid rocket fuel 48 solid rocket fuel 48 then provides propellant force to cause the fuse assembly 24 to pivot around pivot connection 26 in the direction of the arrows illustrated in fig1 until fuse assembly 24 engages first terminal assembly 16 thereby closing the fuse into the high voltage circuit an additional benefit of the present invention is that the propellant forces created by the ignition of solid rocket fuel 48 causes fuse assembly 24 to close into first terminal assembly 16 with such high velocity and with such high force that closing the switching element into a fault is less likely to incur damage to the switching element and contact surfaces formed in the back wall 46 of cylindrical body 42 is indentation 70 see fig5 indentation 70 extends through back wall 46 partially through the point where gripping fingers 50 are connected to back wall 46 as rocket fuel 48 burns to the interior of the end wall 46 the heat generated causes the gripping fingers 50 be severed at indentation 70 thereby allowing gripping fingers 50 to spread see dotted lines in fig5 releasing the expended propellant device 40 from the fuse assembly 24 thus it is unnecessary for the lineman to approach.