3JQ 1.25-R

Package / Case:	2AG, 5mm x 15mm (Axial)
DC Cold Resistance:	0.068 Ohms
Size / Dimension:	0.217" Dia x 0.591" L (5.50mm x 15.00mm)
Color:	--
Operating Temperature:	-55°C ~ 125°C
Approvals:	CE, CSA, cURus, PSE
Melting I²t:	0.8
Breaking Capacity @ Rated Voltage:	100A AC, 150A DC
Mounting Type:	Through Hole
Series:	3JQ
Response Time:	Fast
Voltage Rating - DC:	140V
Voltage Rating - AC:	350V
Current Rating:	1.25A
Fuse Type:	Cartridge, Glass
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Bulk

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Introduction

Fuses are passive electronic components that are used to protect circuit components and wiring from damage from overcurrent and overvoltage. The 3JQ 1.25-R fuse is a type of fuse that is used for various applications, such as power distribution, process control, and communications. This article will discuss the application field and working principle of the 3JQ 1.25-R fuse.

Applications

The 3JQ 1.25-R fuse is designed for use in both AC and DC circuits, and can be used in a wide range of applications. It is an ideal choice for power distribution panels, process control equipment, emergency lighting systems, and communications equipment. The fuse’s compact size makes it an ideal choice for applications where space is limited.The 3JQ 1.25-R fuse is also suitable for use in high-voltage applications such as electric motors, as it is capable of withstanding high-voltage surges. It is also able to withstand high temperatures, making it an ideal choice for applications such as electric heating systems.

Working Principle

The 3JQ 1.25-R fuse is designed to protect the circuit from damage from overcurrent and overvoltage. It works by allowing an electrical current to flow through the fuse element until it reaches a predetermined level. At this level, the fuse will "blow", creating an open circuit that will prevent further current flow.The fuse consists of two metal elements, a fuse link and a thermal element. The fuse link is a thin piece of metal that is heated by the current flowing through it. When the current reaches a predetermined level, the thin piece of metal will melt, breaking the circuit and preventing further current flow.The thermal element is connected to the fuse link and controls the rate at which the fuse will blow. This element is designed to detect the temperature of the fuse link and will increase the resistance in the circuit, causing the fuse to trip at a lower current rating.

Conclusion

The 3JQ 1.25-R fuse is a type of fuse that is designed for use in both AC and DC circuits and can be used in a wide range of applications. It is an ideal choice for power distribution panels, process control equipment, emergency lighting systems, and communications equipment. The fuse works by allowing an electrical current to flow through the fuse element until it reaches a predetermined level, at which point the fuse will "blow", creating an open circuit that will prevent further current flow.

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