40A Fuse Kit – REDARC Electronics 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. Accessories - Fuse Kit, Relay Circuit, and More | REDARC REDARC offer a variety of add-ons and accessories to help assist with the quality installation of our range of products such as fuse kits, relay kits and circuit breaker kits. View from our selection below or contact our technical support team for more assistance.