815545-2

The 815545-2 is a type of low-voltage self-resetting fuse which is used mainly for the over-current protection of high-current electronic products and circuits. In particular, it is designed to protect materials and components from harmful over-currents, particularly in the fields of consumer electronics, industrial electronics and automotive electronics. This article will discuss the application field and working principle of this type of fuse.

As a low voltage self-resetting fuse, the 815545-2 is mainly used to protect high current or medium current generator, motor starter, battery charger, UPS, solar inverter, and so on. There are two common application areas: overload protection and short circuit protection.

In overload protection, the 815545-2 fuse will be set with a bit bigger current rating than the application system’s rated current. If the application current is more than the rated current, the fuse will be activated and the circuit will be cut off immediately, thus protecting the application system and other components from serious over- current damage.

In short-circuit protection, the 815545-2 fuse will be set the same as the application system’s rated current. When a short-circuit fault happened, the current will increase rapidly. At this moment, the 815545-2 fuse will be activated and cut off the circuit, thus avoiding system damage and short-circuit fire.

The 815545-2 fuse uses a RESET Micro switch as the basic working principle. It is designed to trip when the current like through the fuse exceeds the rated operating limit, such as the short-circuit current or the over-current which is caused by faults or overload. The trip action of switch will instantaneously cut off the circuit. When the current decreases to normal value, the fuse body can be reset automatically. This makes the 815545-2 fuse very convenient to use and maintain.

From the above discussion, it can be seen that the 815545-2 fuse is an efficient and reliable component for over-current and short-circuit protection. It is suitable for wide range of application fields, including consumer electronics, industrial electronics and automotive electronics. Its RESET Micro switch makes it easy to install and maintain.