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Frequently Asked Questions
We have integrated the fuse holder FAQ;Read more about Fuse Holders Overview
Fuse holders are devices for containing, protecting and mounting fuses. ... Open fuse holder types are fuse clips, fuse blocks, socket and plug-on cap varieties. The fully enclosed variety may use a fuse carrier that is inserted into a holder or have other means to fully enclose the fuse.
Heating in an electrical circuit is always caused by current flowing through a resistance. If there is significant resistance in the contact between fuse and fuse holder, current well below the fuse rating can cause enough heating to melt the fuse holder.
Electronic equipment is often designed with built-in circuit protection. The main function is to provide protection to both the equipment and the equipment operator in the event of a circuit overload. This protection usually comes in one of two forms: a circuit breaker or a fuse. A circuit breaker is an automatic switch that prohibits the flow of electric current when it is rapidly overloaded or unusually stressed. A fuse is a safety device that protects an electric circuit from excessive current.
A fuse is a protective device for electrical and electronic equipment, usually replaceable, that creates an open circuit if the current through it exceeds some value for a particular duration. It usually consists of a strand of wire inside a ceramic or glass cartridge. Excess current causes the wire to heat up and eventually melt, breaking the circuit.
Inline simply means that the holder for the fuse is fitted into a cable, rather than inside a piece of equipment. So to replace the fuse, you might have to break the inline fuseholder in two, by unscrewing the two halves, release and then replace the cartridge.
Most cars come with very basic audio systems that only include a head unit and four speakers, so upgrading beyond that is more complicated than simply replacing old components with new ones. If your car didn't come from the factory with an amplifier, and it probably didn't, that means you need to wire it in to power and ground, and that means you need some type of amplifier fuse.
Most amplifiers that have internal fuses use some type of automotive fuse. These are the same type of fuses that are used elsewhere in your car, and other audio components, like your head unit, may also use very similar fuses.
When you install an inline fuse, you can use this same type of blade fuse. The fuse itself is installed in a fuse holder, which you connect in-line with the amp power line.
The other option is to use an in-line barrel fuse. This also uses a fuse holder that you install in-line with the power wire, but it will typically take the form of a clear or translucent plastic tube that holds a barrel fuse.
Regardless of the type of fuse you use, it's important to select a fuse holder that meets or exceeds the rating of the fuse that you plan on installing. If you determine that you need a 30 amp inline fuse, don't install a fuse holder that's only rated for 25 amps.
Blade fuses (also called spade or plug-in fuses), with a plastic body and two prongs that fit into sockets, are mostly used in automobiles.
Each fuse is printed with the rated current in amperes on the top.
These types of fuses come in six different physical dimensions:
3、LP-mini (APS), also known as low-profile mini.Unofficially, the "low-profile mini" fuse is sometimes incorrectly called "Micro" since the term means smaller than mini, but recently fuses using the Micro name have been released.
4、Mini (APM / ATM). The mini fuses were developed in the 1990s.
5、Regular (APR / ATC / ATO / ATS) blade-type fuses, also known as standard, were developed in 1976 as ATO by Littlefuse for low voltage use in motor vehicles. Bussmann makes the ATC that also complies with the same ISO 8820-3 and SAE J1284 standards. The "C" and "O" don't refer to closed/open.
6、Maxi (APX), heavy-duty.
A device for holding an electric fuse assembly having a fuse carried by a first end fuse holder and a second end fuse holder.
The assembly includes a first housing section having a cavity formed therein for receiving the first end fuse holder and a second housing section having a cavity formed therein for receiving the second end fuse holder. An end of the second housing section is adapted to be separably coupled with an end of the first housing section by placing an interior surface at the end of the first housing section into overlapping
engagement with an exterior surface of the second end fuse holder and an interior surface of the second end fuse holder into overlapping engagement with an exterior surface at the end of the first housing section. Such a coupling functions to provide a moisture resistant seal.
Respective surfaces of the first end fuse holder and the second end fuse holder may also be placed into overlapping engagement with each other when the first housing section and the second housing section are placed into engagement.
At least one of the first and second housing sections may also be adapted to latch to the first and second fuse holders, respectively.
The ANL fuse is the most common fuse in car audio systems. These fuses range in size from 35 amps up to 750 amps.
The ANL Fuse is designed to protect the main wire to your car stereo. This wire is more difficult to replace than the stereo itself.
The ANL fuse components include the fuse itself, which is flat shaped with two different shaped metal prongs on either end and the fuse holder. The holder has two screws which are used to fasten the holder in place. A set screw and bushing in the holder keep the power line in place.
If you need to replace an ANL fuse, it is very important to replace it with a fuse of the exact same amperage. A different rated fuse will likely cause serious electrical damage. Fuses are relatively inexpensive to replace.
ATC Fuse Holders for automotive and 12 volt electrical systems Allow you to add circuit protection by splicing the fuse holder into a new or existing wire or circuit. These fuse holders accept standard ATO (Open to Air) and ATC (Closed to Air) fuses which are available in amperages ranging from 3 amps to 40 amps current capacity. Some of these ATC fuse holders come with weatherproof caps for use in exposed or harsh environments. Pre-wired fused holders are available in wire sizes ranging from 10 awg to 18 awg.
The standard MAXI Fuse Holder will ensure that your fuse is held securely in place and will stay put for your application. This MAXI Fuse Holder is an inline holder. This makes it a weather resistant fuse holder and is best used in applications where moisture is a concern. The MAXI Fuse Holder has a removal cap.
A fusible link is a short piece of insulated low-voltage cable within an automotive wiring harness that is designed to protect the harness in applications where a fuse is unsuitable. In an extreme current overload situation, the conductor within the link is melted while the ensuing flame and spark is contained within the link's insulation.