2JS 1.25

2JS 1.25 Application Field and Working Principle

The 2JS series of fuses is suitable for medium-voltage (MV) applications, such as transformers, cables, bus ducts, and other industrial and commercial machinery. These specialized fuses are approved to UL standard 248-14 and carry ratings up to 85A, 1000V. As all medium voltage systems often operate with high current loads, the 2JS fuse has been designed for performance and compliance with all applicable safety ratings for use in MV applications.

The working principle of the 2JS fuse involves a dual-compensation feature that allows the protection it provides to be tailored to the specific application environment. The dual-compensation feature utilizes two layers of metal, one of which is anode material and the other a resistor. The anode material reacts with the current in the circuit, while the resistor serves to limit the amount of current the fuse can pass or hold back. As the current increases, the resistor reduces the voltage in the circuit, providing the desired protection.

The 2JS fuse is also designed for the highest levels of performance and reliability. Its double-walled construction eliminates the possibility of arc tracking and ensures that harmful overload currents do not reach damaging levels. The fuse also has superior heat stability even when exposed to high levels of current flow, which helps prevent dangerous thermal runaway scenarios.

In summary, the 2JS 1.25 fuse is an excellent choice for medium voltage applications that require a high level of safety and reliability. Its dual-compensation feature makes it ideal for applications that require adjustable current protection. In addition, its double-walled construction provides superior heat stability and arc-tracking protection, making it suitable for both residential and commercial electric circuits.