1210L400SLWR Circuit Protection

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PTC Resettable Fuses play a pivotal role in the protection of electrical and electronic systems. To this end, 1210L400SLWR has been developed as a dependable PTC Resettable Fuse with special features developed specifically for use in printed circuit board applications.

The 1210L400SLWR consists of a molded plastic encapsulated slug made with a ceramic containing positive temperature coefficient (PTC) material which is winding attached to a metal chip. The slug acts as a reactive element and is connected to the circuit/printed circuit board via attaching pins. As the current flowing through the slug increases, its temperature rises which causes a physical transformation in the PTC material. Once the current limit is exceeded, the PTC material will melt and the slug will expand, forming an open circuit and discontinuing the flow of current. This type of PTC Resettable Fuse offers a great option for eliminating the use of traditional fuses.

The 1210L400SLWR’s application fields are vast and include telecommunications, home appliances, automotive, lighting, consumer electronics, and many more. This PTC Resettable Fuse offer outstanding protection against overload, short circuit, and over temperature. In addition, it offers a low insertion force and fast time-to-trip characteristics.

The most notable advantage of a PTC Resettable Fuse compared to a traditional fuse is that it can be reset after it trips. By simply turning off the circuit, the PTC Resettable Fuse will cool and return to its original position to allow for normal functioning. This unique feature provides reliable protection without the need for frequent replacement of blown fuses.

The 1210L400SLWR PTC Resettable Fuse works according to a specific working principle. When the current is flowing through the slug, the metal chip will heat to a certain temperature and start to expand. This expansion then causes a pressure between the metal chip and the ceramic material of the PTC, which in turn will generate resistance and stop the current flow. When the circuit is switched off, the current will stop, and the metal chip will cool until it returns to its original shape.

It’s important to note that the 1210L400SLWR PTC Resettable Fuse has specifically designed for printed circuit board applications and must be used accordingly in order to ensure optimal protection. Additionally, the slug must be kept in its original packaging when not in use to ensure that it remains intact and functional.

In conclusion, the 1210L400SLWR PTC Resettable Fuse is a reliable and effective solution for the protection of electrical and electronic systems from damage caused by overloads, short circuits, and over temperature conditions. With its easy-to-set design, fast trip characteristics, and low insertion force, this PTC Resettable Fuse offers superior protection with limited maintenance. This fuse is widely used in a variety of application fields and its working principle ensures reliable protection over time.

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