ITEM NAME:50Pcs 500MA/6V MT SMD Resettable Fuse PPTC PolySwitch Self-Recovery Fuses JR.Application: PPTC wide range of applications, can be used in a variety of electronic products, communications products, power supplies, etc. Self-Recovery Fuses Overcurrent protection speed: Self-recovery fuses Due to their material properties, the overcurrent response is much faster than other overcurrent protectors.