3JS 1.25

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

Fuses are vital components for most electrical and electronic systems. In the simplest terms, a fuse is a small electrical device used to protect an appliance from overload or short-circuiting. The fuse usually contains a metal strip or wire wire that melts when the amount of current reaching it exceeds the rated value, thus breaking the circuit and preventing the device from being damaged. In this article, we will discuss the application field and working principle of 3JS 1.25 fuse.

One of the primary applications of 3JS 1.25 fuse is in the protection of switches, circuit breakers, and other appliances against short-circuit and overload conditions. The fuse is typically installed in the end of the main line, or in the hot line in the electric machinery. The fuse has an electrical rating of 1.25A and a voltage rating of 500V. It is suitable for use in AC-50/60Hz, DC-50V, and DC-60V environments. It has a good breaking capacity and is capable of breaking more amperes than its rated value.

The working principle of the 3JS 1.25 fuse is based on the melting of the conductive material inside the fuse element. When the current passing through the element reaches the rated value, the element begins to heat up and ultimately melt, rupturing the circuit and preventing any further current flow. The breaking capacity of the fuse is determined primarily by the temperature generated by the current. This temperature is dependent on the resistivity of the material used for the element, as well as on its physical characteristics, such as size and shape.

The 3JS 1.25 fuse is also capable of handling both AC and DC operation. In AC operation, the fuse element is designed to open when the current reaches the rated value. However, in DC operation, the fuse is designed to open only when the current reaches twice the rated value. This is due to the fact that the current is of a constant character in DC operation, and the heat generated by the current is directly proportional to the square of the current. Thus, the operation is primarily based on the Joule effect.

In addition to the above features, the 3JS 1.25 fuse is also designed with safety features. It is designed with a gap to prevent any arc re-strikes, as well as with a dielectric shield to prevent most of the arc generated heat from being transmitted outside the device. The fuse is also designed to minimize any chances of an external combustion due to the thermal inertia of the fuse element.

The 3JS 1.25 fuse is a reliable and safe device for protecting a variety of appliances against short-circuit and overload conditions. It has good breaking capacity and is able to break more currents than its rated value in order to provide an additional layer of protection. It is also designed to minimize any chances of an external combustion due to the thermal inertia of the fuse element. As such, it is an ideal device for use in a variety of electrical and electronic systems.

The specific data is subject to PDF, and the above content is for reference