03440402X

Series:	344
Part Status:	Active
Lead Free Status / RoHS Status:	--
Fuseholder Type:	Holder
Moisture Sensitivity Level (MSL):	--
Fuse Type:	Cartridge
For Use With/Related Products:	3AG
Fuse Size:	1/4" Dia x 1 1/4" L (6.4mm x 31.8mm)
Number of Circuits:	1
Voltage:	16V
Current Rating:	20A
Mounting Type:	Panel Mount
Orientation:	--
Termination Style:	Solder Lug
Contact Material:	Copper
Contact Finish:	Tin

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03440402X Application Field and Working PrincipleFuseholders serve an important role in electrical circuits by safeguarding power systems and equipment from potential overloads and faults. They are also commonly referred to as "fuse blocks" or "fuse boxes". 03440402X is a type of fuseholder designed for holding power line fuses, and it has been widely used in medium-voltage power delivery systems, substations and high-voltage motor control centers. This article will describe the application field and working principle of 03440402X.

Application Field

03440402X is most suitable for high-voltage and medium-voltage fuse applications. This type of fuseholder is designed for medium-voltage power distribution or protection circuits, such as those used in electrical substations. It can accommodate a wide range of fuses from class R to class J, with current ratings from 6A to 400A and interrupting ratings up to 200kA. The 03440402X can also be used with Class D, Class H, Class K and class S fuses, as well as other fuse types with appropriate internal modifications. It is designed to accept most single-pole, two-pole, three-pole, and four-pole medium-voltage fuses. Additionally, this type of fuseholder can be used with several types of medium-voltage power line switches, such as trip-free, positive-drive and line switches.

Working Principle

The 03440402X is a spring-loaded, panel-mounted fuseholder. It is constructed from insulating, non-tracking, halogen-free materials and is rated for 1000V and 600V applications. The fuseholder has a positive drive mechanism that holds the fuse securely within the mounting bracket. When a fault or overload occurs, the fuse element melts and releases the connection to the mains supply. The spring-loaded mechanism helps avoid arcing, which can damage other components in the system. The fuseholder can be easily removed and replaced with a new one when needed.

Conclusion

The 03440402X is an ideal fuseholder for medium-voltage power systems, substations, and medium-voltage motor control centers. It is designed to hold a wide range power line fuses, with current ratings up to 400A, and interrupting ratings up to 200kA. Additionally, it is constructed from insulating, non-tracking, halogen-free materials, and has a positive drive mechanism that securely holds the fuse element within the mounting bracket. As such, this type of fuseholder can effectively protect power systems and equipment from potential overloads and faults.

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