SF-1206SP125M-2 Circuit Protection

Fuses are essential components of most modern electrical systems. They are designed to open a circuit in the event of an overload or short circuit, protecting the wiring as well as the devices connected to it. The SF-1206SP125M-2 is a surface mount fuse with a typical breaking capacity of 100A at 32V AC. It is typically used in power supplies, industrial and domestic appliances, and other applications where space is limited. In this article, we will discuss the application field and working principle of the SF-1206SP125M-2.

Application Field

The SF-1206SP125M-2 is an axial lead fuse, meaning it is designed to be placed in line with the circuit it will be protecting. This type of fuse is perfect for small, surface mount applications, and is usually used when space is at a premium. It is also suitable for applications that require a higher breaking capacity, and is often used in power supplies, industrial and domestic appliances, and many other applications.

Working Principle

The SF-1206SP125M-2 uses a thermally activated element to open the circuit in case of an overload or a short circuit. The element is composed of a wire that has a predictable amount of electrical resistance. When an overload or a short circuit occurs, the increased current causes an increase in the temperature of the element. When the temperature of the element reaches a certain point, it melts, creating an open circuit, thus protecting the connected components from damage.

In addition to the thermally activated element, the SF-1206SP125M-2 also utilizes a fusible metal element. This element reacts to changes in current in a similar way as the thermally activated element, but instead of melting, it vaporizes when it reaches a certain temperature. This helps to prevent thermal runaway which can occur when the thermally activated element reaches its melting point.

The SF-1206SP125M-2 is a reliable and effective component, and can be used in a variety of applications. Its thermally activated element and fusible metal element make it well-suited for applications where space is limited and high breaking capacity is required. It is also easy to install and can be used in a variety of applications, making it an ideal choice for many types of circuits.