3JQ 300-R

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Fuses have a long history that dates back hundreds of years. They have been used to protect not only electrical circuits from overloads, but many other devices and facilities from dangerous sources. The 3JQ 300-R Fuse is one of the most popular fuses in use today, and its application field and working principles are worth exploring.

The 3JQ 300-R Fuse is designed for use in industrial applications such as railway protection devices, telecom equipment, electronics, solar power systems and other applications in extreme environments for field engineer/field service second-tier maintenance. It has a voltage rating of 300 volts AC/DC. The fuse is UL listed, CSA certified and RoHS compliant and meets the requirements of IEC, ASTM and SAE Standards. The fuse is also available in a variety of sizes and amperage ratings and is suitable for use with a wide range of voltage sources.

The 3JQ 300-R Fuse is constructed of a zinc-casted connection housing with a silver-oxide glass body. The fuse element consists of a nickel-plated brass body, with an internal copper wire twisted around it and filled with a thermally sensitive material. The assembly is held together between two fiberglass end caps with pressure-sensitive rupture discs in the center. The two end-caps also provide insulation for the assembly.

The 3JQ 300-R Fuse\'s working principle is based on the heat generated by an electrical current passing through the fuse element. When the heat generates more than the fuse can handle, the thermally sensitive material inside the element will expand or break, interrupting the flow of the current and protecting the electrical circuit or device.

The 3JQ 300-R Fuse also features over-current protection technology, which provides protection against excessive current flow in the event of a large current increase. The over-current protection is adjustable and can be set to trip when the current reaches the maximum level. This adjustable over-current protection allows the fuse to provide a level of protection that is suitable for the application and protects the device or circuit from damage.

The 3JQ 300-R Fuse is designed for use in harsh environments and is suitable for use in many applications. The fuse is UL listed, CSA certified and RoHS compliant, and meets the requirements of IEC, ASTM and SAE standards. The over-current protection technology allows it to provide a level of protection that is suitable for the application and ensures that it can protect the device or circuit from damage.

In conclusion, the 3JQ 300-R Fuse is one of the most popular fuses on the market today due to its reliability and long-term performance. It is suitable for a wide range of applications and provides an adjustable level of over-current protection. With its zinc-casted connection housing and silver-oxide glass body, the 3JQ 300-R Fuse is a reliable and safe product that is sure to provide the protection that is needed.

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