The REDARC 40A Fuse Kit is equipped with high-quality fuses and fuse holders 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 40A and 60A versions and are designed for BCDC installations. The REDARC 100A version is designed for SBI installations. Each fuse kit comes with (2) fuse holders, (4) 40A fuses, cable crimps, and a detailed instruction sheet. ? ? California residents: see?Proposition 65 information