0388009.MXP

Series:	388
Packaging:	Bulk
Lead Free Status / RoHS Status:	--
Part Status:	Obsolete
Moisture Sensitivity Level (MSL):	--
Fuse Type:	Cartridge, Glass
Current Rating:	9A
Voltage Rating - AC:	250V
Response Time:	Fast
Package / Case:	3AB, 3AG, 1/4" x 1-1/4"
Mounting Type:	Holder
Breaking Capacity @ Rated Voltage:	100A
Melting I²t:	298
Approvals:	CE, PSE
Operating Temperature:	-55°C ~ 125°C
Color:	--
Size / Dimension:	0.250" Dia x 1.250" L (6.35mm x 31.75mm)
DC Cold Resistance:	0.0082 Ohms

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What are Fuses?

A fuse is an electrical device with a built-in resistance element that is designed to provide a predetermined level of protection for electrical circuits. Fuses are used primarily to prevent circuit overloads, which can lead to overheating, system damage or fire. Generally, a fuse is a two-terminal device consisting of a metal conductor housed within a relatively small insulated enclosure. When excessive current flows through the conductor, the metal element heats up and melts, thus interrupting the circuit and protecting the connected equipment from damage.

Types of Fuses

Some of the most common types of fuses include cartridge, ring (AKA plug) type, blade type, thermal type, and temporal type. Each of these fuse types has unique characteristics that make them suitable for a variety of applications.

• Cartridge Fuses are typically used in applications where it is necessary to protect both a primary and secondary circuit. These devices usually feature two vertical terminals and current ratings between 0.2-600A. They are available in both cylindrical and rectangular case sizes.
• Ring Fuses are most commonly found in residential and commercial applications. These devices feature two horizontal terminals and typically have current ratings between 0.2-60A. They are available in round-shaped case sizes with snap-in mounting features.
• Blade Fuses are primarily used in automotive applications. These devices feature two vertical or angled terminals and current ratings between 2-200A. They are available in a variety of case sizes with common shapes including “Mini”, “Standard”, and “Maxi”.
• Thermal Fuses are typically used to protect motor windings, heater coils, and other thermal overloads. These devices feature two horizontal terminals and current ratings between 0.2-25A. They are available in a variety of common case sizes.
• Temporal Fuses are primarily used in AC power applications. These devices feature two horizontal terminals and current ratings between 0.2-20A. They are available in a variety of common case sizes with a slow-blow or time-delay design.

0388009.MXP Application Field and Working Principle

The 0388009.MXP is a type of fuse specifically designed for high voltage applications. It is a cartridge fuse with a current rating of 250A and a voltage rating of 7.2kV. This fuse is designed to provide protection for both primary and secondary circuits in high voltage applications.The fuse consists of a metal conductor housed within an insulated enclosure and two vertical terminals. When excessive current flows through the conductor, the metal element rapidly heats up and melts, interrupting the circuit.The working principle of the 0388009.MXP is based on the willingness of the fuse to “blow” and the user\'s intention not to have it happen. The fuse element is designed to reduce the amount of heat generated by higher currents flowing through the fuse. When the current increases to the point where the fuse element is unable to dissipate the heat, it “blows”, interrupting the circuit and protecting the equipment from damage.

Conclusion

Fuses are an essential part of any electrical system. They protect the connected equipment from damage and fire due to circuit overloads. The 0388009.MXP is a type of fuse specifically designed for high voltage applications. This fuse features a metal conductor that is designed to rapidly heat up and melt in the event of an overload, thus interrupting the circuit and protecting the connected equipment.

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