This FMX (female MAXI fuse) fuse is rated for 30 amps. FMX fuses are time-delay fuses used in many cars, trucks, vans and boats. These fuses save space while still offering the same excellent circuit protection as other automotive fuses. Bussmann easyID fuses are the easiest option when it comes time to replace a fuse in your vehicle. Figuring out which fuse needs to be replaced is not fun for anyone but EasyID fuses make it simple. Instead of testing each fuse with a fuse tester, trying to figure out the fuse panel diagram, or pulling out each fuse one-by-one, Bussmann’s easyID fuse technology lights up an LED bulb to let you immediately know which fuse is blown.