2JQ 7-R

Fuses are essential components of electric circuits as they are used to protect against either overcurrent or overvoltage. As such, they are necessary in a wide range of applications. 2JQ 7-R fuses are designed for applications with a higher voltage range than conventional fuses. They are known for their high level of reliability and offering greater safety for users.

The 2JQ 7-R fuse is a rectangular, two-pin device housed in a plastic body with a snap-in or screw-in type terminal. It can be used in a variety of different applications, from basic motor protection to more industrial applications such as power plant protection, high-voltage transformer substation and transmission equipment protection. It has a rated voltage of 500V AC and a rated current of 30A. The fuse has a built-in thermal fuse element, which is made from copper wire that is coated with a metallic oxide. This ensures that the fuse element is able to maintain maximum temperature resistant properties in order to protect the circuit.

The 2JQ 7-R fuse has an adjustable trip current that can range from 1.5A to 15A. This allows the user to choose a trip current that is suitable for the application. The trip current also has a tolerance of up to 20%, meaning that it can be set to the desired current for the particular application and provide greater protection. This also means that the fuse can be adjusted to operate in multiple applications, offering greater flexibility and protection.

The working principle of the 2JQ 7-R fuse is based on thermal protection. The fuse has a built-in thermal fuse element, which is designed to melt when the current exceeds the pre-set trip current. When the fuse element melts, it breaks the circuit and disconnects the power supply. This prevents damage to the appliance or battery that is connected with the circuit, as it prevents too much current from entering the circuit. It is important to note that the fuse must be replaced after it has been tripped, as it cannot be reset.

In summary, the 2JQ 7-R fuse is a reliable and versatile fuse designed for applications with higher voltage ranges. It has an adjustable trip current and a range of applications, offering excellent protection in most situations. It has a built-in thermal fuse element that ensures it can maintain temperature resistant properties and protect against too much current entering the circuit. It is essential that the fuse must be replaced after it has been tripped for optimal performance.