There are three different types of blade fuses: the mini fuse
(used in small-current applications), the standard auto fuse (used
for most common circuits), and the maxi fuse (used for
higher-current applications and in some case to replace a fusible
link). When a fuse ‘blows”, it must be replaced. Carmakers use
circuit breakers-a resettable rather than replaceable circuit
protector- instead of fuses in circuits such as the headlights,
power seats, power windows, and
others.
Purpose:
Fuses and circuit breakers are designed to protect circuits in the event of electrical overload.
Maintenance Tips/Suggestions:
Refer to your vehicle’s owner’s manual for specifics on fuse panel locations, fuses and their capacities. Today’s electrical systems have more than one fuse panel that can be found in different locations throughout the vehicle. Common fuse panel locations include the engine compartment and under the dash. Some carmakers have even made life easier by labeling fuse access panels with “FUSES”. Circuit breakers are often located in fuse/relay panels, but some components like the headlight switch and power window motors have built-in circuit breakers. Blown fuses or a tripped circuit breaker usually indicate more serious electrical circuit problems such as a short circuit or an electrical consumer that is using more current than the circuit is designed for. Mini fuses, standard auto fuses and the maxi fuse all have standard colors that reflect the fuse’s current-carrying capability.
