|| The fuze is energized as follows: rotation of the ogive or an inductive command from an auto-setter initiates the Battery Primer which breaks a glass ampule within the battery, releasing electrolyte fluid to power-up the battery and energize the fuze.
Upon weapon firing, setback and centrifugal forces act on the electromechanical S&A: the setback force moves the setback lock clear of the slider; at the muzzle exit, spin force frees the spin lock from the slider and disrupts the electrical shortening across the piston actuator (PA); when set for time, an electrical pulse activates the PA at 50 milliseconds prior to set time; when set for PD, the pulse activates the PA at 0.45 seconds in flight; the PA moves the slider, locking it into the armed position thereby disrupting the electrical short across the Electric Detonator, and connecting the Electric Detonator terminal to the firing circuit.
When a time setting expires, the electronics assembly sends a fire pulse through the firing circuit and detonates the Electric Detonator. For PD function, the crush switch assembly senses the impact and transmits a fire signal to detonate the Electric Detonator. The output of the Electric Detonator functions the lead charge which initiates projectile functioning.