3AB 4-R

Package / Case:	3AB, 3AG, 1/4" x 1-1/4"
DC Cold Resistance:	0.024 Ohms
Size / Dimension:	0.250" Dia x 1.252" L (6.35mm x 31.80mm)
Color:	--
Operating Temperature:	-55°C ~ 125°C
Approvals:	CE, CSA, cURus, PSE
Melting I²t:	36
Breaking Capacity @ Rated Voltage:	200A
Mounting Type:	Holder
Series:	3AB
Response Time:	Fast
Voltage Rating - AC:	250V
Current Rating:	4A
Fuse Type:	Cartridge, Ceramic
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Bulk

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3AB 4-R Fuses and Their Usage in Protection

Fuses, or current-limiting overcurrent protection devices, have been used for centuries to prevent damage to electrical equipment and wiring. They are typically deployed in both commercial and residential applications to protect against the risks of overcurrents and short-circuiting. The 3AB 4-R fuse is one of the most popular fuses commonly adopted in industrial and domestic circuits to serve as a safety precaution. This article will discuss the 3AB 4-R fuse, its various application fields, and its working principle. The 3AB 4-R fuse is a type of cubic fuse, which consists of two halves separated by a center portion containing a metal wire element. These fuses have a four-inch length, a galvanized steel shell, and come with a variety of voltage ratings, depending on the model. They are usually used as overcurrent protective devices in higher voltage applications ranging from 600 volts to 600,000 volts and can provide up to 1000 amps of current. The most common applications of the 3AB 4-R fuse are in industrial and domestic circuits. In industrial settings, the fuses are used as an important part of safety systems, providing protection for heavy machinery and equipment from overcurrents and short-circuiting. Domestic applications, on the other hand, can range from powering household appliances to providing protection for air conditioning, heating, and lighting systems.The 3AB 4-R fuse works by detecting an increase in current through a circuit and then breaking the current flow by melting the internal metal element. The melting of the element prevents any additional current flow to the connected circuit and therefore prevents any potential damage to it. Upon a high current flow, the fuse will open by the breaking of the element at very low melting point, providing an uninterrupted protection to the device.Finally, it should be noted that the 3AB 4-R fuse is just one of the many available types of fuses made of different fuse elements and designed for various applications, from large industrial installations to low voltage consumer applications. It is important to consider the characteristics and safety features of each fuse type prior to selecting the appropriate fuse for an application.In conclusion, the 3AB 4-R fuse is an effective means of protecting electrical systems from damage due to overcurrents and short-circuiting. This fuse is designed for higher voltage applications and comes with a variety of voltage ratings. Additionally, it works by detecting an increase in current through a circuit and then breaking the current flow by melting the internal metal element. This gives it an added advantage over other fuse types. Although there are many fuse types on the market today, it is important to choose the right type of fuse for each application.

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