metallized metal film layer 303 forms a pattern of circular metallized areas 305 interconnected by fuse areas an opposite surface of the polyester film may carry either a solid or a similar pattern metallized layer covering substantially corresponding areas as discussed above in connection with conventional materials the pattern of this embodiment includes two sizes of circles referred to as large and small the small circular areas 307 electrically interconnect the large circular areas 305 forming plates of the capacitor one on each surface of the dielectric film 301 the small circular areas 307 define small fuse regions 309 the pattern described above extends from near an edge of the dielectric film clear of metal 311 to a contact edge 313 of the dielectric film at which wires or other connecting leads are attached the contact edge 313 and clear edge 311 are reversed on the opposite side of the dielectric film 301 so that the leads are connected on opposite edges of the film 301 in this exemplary embodiment the contact edge 313 runs through a line of large circular areas forming large semi circular areas 315 within the large semi circular areas 315 at the contact edge 313 of the material are two fuses 317 and 319 designed to break at different values of current the currents at which fuses break are referred to hereinafter as fusing currents in the illustrative embodiment the two edge fuses 317 and 319 have.