The REDARC 30A Fuse Kit is equipped with high-quality fuses and a fuse holder to fit the cable required for the specified current and make a solid connection. This ensures your installation is working safely and efficiently. Poor quality fuse holders typically don't make enough contact with the fuse, which allows dirt and other elements to get in between contact points. This generates excess heat, which can be enough to melt both the fuse and the holder. Avoid fuse problems with a REDARC Fuse Kit. The kits are offered in 23A, 30A, 40A and 60A versions and are designed for dc to dc charger installations. The FK30 is also perfectly suited for use with the BCDC1212 trailer battery charger output.