OEM-Grade Automotive & Marine Circuit Protection
Don't risk an electrical fire with cheap, unbranded fuses. Bussmann (by Eaton) is the global standard in circuit protection. Whether you need standard ATM/ATC blade fuses for your car's interior panel, high-amp MAXI fuses for an aftermarket amplifier, or heavy-duty thermal circuit breakers for your RV or boat, Bussmann provides the reliable electrical defense your 12V system requires.
View Bussmann Buying Guide & FAQs
Buying Guide: Automotive Fuses & Breakers
Identifying Blade Fuses
The most common automotive fuses are ATC (regular size), ATM (mini size), and Micro2 (micro size). For high-draw accessories like cooling fans or air compressors, you will need MAXI fuses. Bussmann color-codes all their blade fuses according to industry standards, so a yellow fuse is always 20-amps, and a green fuse is always 30-amps, regardless of the physical size.
Fuses vs. Circuit Breakers
A fuse is designed to blow and break the circuit permanently during an overload. For circuits that occasionally experience high surge loads (like a winch or an RV slide-out motor), a Bussmann auto-reset circuit breaker is a better choice. It will trip to protect the wiring, but will automatically cool down and reset itself so you don't have to carry spare fuses.
Frequently Asked Questions
Can I replace a 10-amp fuse with a 20-amp fuse?
No, you should never put a higher-rated fuse into a slot designed for a lower rating. The fuse is sized to protect the specific gauge of wire in that circuit. If you use a larger fuse, the wire can overheat and melt before the fuse blows, causing an electrical fire.
What is a Bussmann inline fuse holder used for?
An inline fuse holder is used when wiring a new aftermarket accessory directly to the battery. It ensures that the new wire is immediately protected from short circuits. You should always install the inline fuse as close to the battery terminal as possible.
