Bussmann CBC40B 40A Type I Heavy Duty Automotive Circuit Breaker with Stud Terminals

Bussmann

<h3>Bussmann by Eaton: A Century of Circuit Protection Leadership</h3><p>Few names carry as much weight in electrical circuit protection as <strong>Bussmann</strong>. <a href="/1987-bussmann">Bussmann</a>, now operating as a division of Eaton, traces its roots to St. Louis, Missouri, where the Bussmann brothers began crafting fuses from the ground up — eventually supplying protection for horseless carriages and World War II aircraft alike. Today, that legacy spans more than 30,000 products and a global manufacturing footprint, making Bussmann one of the most trusted names in the industry.</p><p>Acquired by Eaton, a multinational power management company with nearly a century of innovation behind it, the Bussmann series has only grown in breadth and engineering depth. Eaton's mission to deliver intelligent power management solutions pairs naturally with Bussmann's long-standing focus on electrical safety and reliability. The result is a product portfolio that serves automotive, marine, RV, commercial, industrial, and alternative energy markets with equal confidence.</p><h3>Automotive &amp; Marine Electrical Protection You Can Rely On</h3><p>At the heart of the Bussmann lineup are its <a href="/1987-bussmann-fuse-2676">Fuses</a> — the first line of defense against damaging overcurrent conditions in any vehicle or vessel. From compact blade-style ATM and ATC fuses to high-amp cartridge and fusible link designs, Bussmann fuses are engineered to meet both OEM specifications and demanding aftermarket performance requirements.</p><p>Protecting those fuses and keeping them accessible is just as important as the fuses themselves. Bussmann's range of <a href="/1987-bussmann-fuse-holder-2688">Fuse Holders</a> — including inline blade holders, modular designs, and DIN rail-mount options — ensures secure, low-resistance connections in everything from daily drivers to off-highway equipment. For those who need to be prepared for unexpected blown fuses on the road or water, Bussmann also offers convenient <a href="/1987-bussmann-fuse-kit-10140">Fuse Kits</a> that bundle a practical assortment of amperage ratings into a single, organized package.</p><p>When a resettable solution is preferred over a one-time fuse, Bussmann's <a href="/1987-bussmann-circuit-breaker-2504">Circuit Breakers</a> deliver. Designed to match the footprint of standard ATM and ATC fuses, these ultra-compact breakers come in Type I (automatic reset), Type II, and Type III configurations, and are built to handle the voltage and current demands of trucks, RVs, ATVs, agricultural machinery, and more.</p><p>For multi-battery applications — common in RVs, marine vessels, and commercial vehicles — Bussmann's <a href="/23501-battery-isolator-bussmann-1987">Battery Isolators</a> provide a solid-state solution to a persistent problem: auxiliary battery drain. Acting as an electrical check valve, these isolators allow accessories to draw from a secondary battery without ever compromising the starting power of the main battery.</p><h3>Why Choose Bussmann?</h3><ul style="list-style:disc"><li>Nearly 100 years of circuit protection expertise and continuous innovation</li><li>Products engineered for automotive, marine, RV, commercial, and industrial environments</li><li>Backed by Eaton's global resources, engineering support, and power management technology</li><li>OEM-matched designs for straightforward replacement and compatibility</li><li>A broad catalog covering everything from miniature blade fuses to heavy-duty battery management</li></ul><p>Whether you're replacing a blown fuse on a weekend project vehicle or building out a complex multi-battery electrical system for a marine application, Bussmann has the circuit protection products — and the century of know-how — to get the job done right.</p>