1pk 100 Amp ATP Intelligent Fuse is designed with an LED on top of the fuse body which lights up when the fuse is blown, easily identifying the fuse that needs replacing. Meets or exceeds OEM specifications for Keyoff Mode; OEM Keyoff Mode threshold: 20 milliamps. Fuse body is color coded for easy amperage identification. Min, Big and Maxi Blade sizes with a large range of amperage ratings.