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12 Volts

Electrical Protection

The electrical equipment and circuits in a system must be protected in order to avoid or to control damage due to abnormal currents and/or voltages. The electrical protection added to a car audio system can prevent damage to the components and any further dangers.. Electrical protection is a vital and impotant component of your 12 volt system. The most common electrical protection is a fuse in line with the components, another is a circuit breaker.



In electronics and electrical engineering a fuse is a type of overcurrent protection device. Its essential component is a metal wire or strip that melts when an overpowering amount of current flows through, which interrupts the circuit in which it is connected. Short circuit, overload or device failure is often the reason for excessive current. Overcurrent protection devices are essential in electrical systems to limit threats of damage or harm.


Blade Fuse

Plug-in fuses (also called blade or spade fuses), with a plastic body and two prongs that fit into sockets, are mostly used in automobiles. These types of fuses come in four different physical dimensions: mini (ATM or APM), low-profile mini, regular (ATO, ATC, or APR) and maxi (APX). Blade type fuses were developed in 1976 for low-voltages use in motor vehicles. Blade type fuses can be mounted in fuse blocks, in-line fuse holders, or fuse clips. ATC Fuses were introduced in the late'70s and are still widely used by automotive OEMs. Uses universal color coding to indicate amperage. ATC fuses have an enclosed element that offers protection against shocks and corrosion. Rated at 32 volts.

Types of Blade Fuses



AGC Glass Fuse

North-American built automobiles up to 1981 had electrical systems protected by glass cartridge fuses rated 32 volts and current ratings from 4 amperes to 30 amperes.



ANL Fuse

ANL fuses provide high current circuit protection in a small package. Available in amperage ratings from 80 amps to 300 amps.For use in ANL fuse blocks and holders.



AGU Fuse

AGU Fuses available in amperages from 30 to 80 amps.



Fuse Holders

A variety of fuse holders are availiable for each fuse, the holders provide protection from contact and atmosphere elements.


ATC Fuseholder

Fiber reinforced nylon in line fuse holder with attached cover to keep out dirt, water resistant but not water proof. For full size ATQ type blade fuses. 8" AWG12 wire loop. 30A max. current.



ANL Fuseholder

A high current handling inline waterproof fuse holder that accepts one 0, 2, or 4 gauge in/output and is rated to handle up to 300 amps of current.



AGU Fuseholder

High current and waterproof.



Circuit Breakers

A circuit breaker is an automatically-operated electrical switch designed to protect an electrical circuit from damage caused by overload or short ciruit. It's basic function is to detect a fault condition and, by interrupting continuity, to immediately discontinue electrical flow. Unlike a fuse, which operates once and then has to replaced, a circuit breaker can reset (either automatically or manual) to resume normal operation. Circuit breakers are made in varying size for car audio installations.















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