JJS-25

Introduction

The JJS-25 is an electrical specialty fuse designed for the protection of motors, transformers, capacitors, and other devices that can become overloaded and damaged by excessive current. It helps protect against short-circuiting, sparks, and other problems that can occur when too much power is put into a system. This article will discuss the application field and working principle of the JJS-25.

Application Field of the JJS-25

The JJS-25 is an electrical specialty fuse that is suitable for a wide variety of applications, including but not limited to the protection of motors, transformers, capacitors, and other devices. It is designed to withstand the normal surge of current caused by these devices and is equipped with an overload protection feature, so that it will trip before damage is caused by an overvoltage.

The JJS-25 is well suited to industrial and commercial applications, such as power supplies, drivers, and other device protection systems. It can be used for residential applications as well, since it is UL60950 compliant. It can withstand temperatures ranging from -40°C to +85°C and has an operating range of 0-125A.

Working Principle of the JJS-25

The JJS-25 is a thermal-magnetic fuse that operates on a simple principle. When the current running through the fuse reaches a certain level, it trips the thermal-magnetic breaker, thus disconnecting the current flow. This process takes a few milliseconds and, when successful, helps protect the device from damage.

The thermal part of the breaker is a bi-metallic strip that is heated by the current when it passes through the fuse. When the temperature reaches a set level, the bimetallic strip bends, thus opening the circuit. The magnetic part is a coil around the bi-metallic strip. When it is energised by the current, it generates a magnetic field that helps to quickly open the breaker.

The JJS-25\'s design makes it more effective than other fuses, as it has a very fast operating time and a low operating voltage. This makes it suitable for a wide range of applications, from small to large. It is also able to withstand high levels of surge current, which helps to prevent damage caused by short-circuiting.

Conclusion

The JJS-25 is an electrical specialty fuse designed for the protection of motors, transformers, capacitors, and other devices. It combines the thermal and magnetic principles to quickly detect and disconnect any overvoltage or overload. It is suitable for a wide range of applications, from residential to industrial, and is UL60950 compliant. Its fast operating time, low operating voltage, and high surge current capacity make it an effective protection device.