CURRENT LIMITING FUSE

摘要

Low thermal mass fusible conducting elements are in nucleate boiling relationship to a dielectric liquid for normal large operating currents with resultant high heat transfer coefficient. For currents of short duration and substantially larger in magnitude than normal currents, the fusible conductive elements are in vapor film boiling relationship to the dielectric liquid with resultant heat transfer coefficient which is several orders of magnitude lower than the heat transfer coefficient for nucleate boiling. Accordingly, for currents of very large amplitude and short durations heat buildup and temperature rise of the fusible elements to the melting point thereof is rapid with resultant rapid circuit interruption.