GEM assemblies feature multiple capacitor cells with metallized polypropylene film dielectric which provides instantaneous self- healing action and reduced energy losses. Safety is provided with the patented GE internal Pressure Sensitive Interrupter (PSI) designed to sense the buildup of pressure if a fault occurs and to interrupt the internal electrical connections before the capacitor cell can rupture. GEM cells feature time-proven Dielektrol, a biodegradable NFPA Class IIIB dielectric fluid. GEM offers high reliability and long life and is suitable for operation over a temperature range of -40 to 46 deg C.