YPBJ9.40T

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

PTC Resettable Fuses are just a specialized type of fuse that is designed to open and immediately reset itself when there is an overload or surge in current. This allows the circuit to continue functioning normally without interruption, preventing losses due to circuit interruption. Fuses of this type have been in use for decades, and their applications are widespread. The application and working principle of YPBJ9.40T are one such example.

The YPBJ9.40T is a PTC Resettable Fuse with a rated current of 9.4A and a rated voltage of 250V. Its maximum breaking capacity is 4500A. This type of fuse can be used in a variety of applications, from AC/DC device protection to short-circuit protection. The fuse can also protect against the effects of transients and surges, as well as sudden voltage drops.

When an overload or short-circuit occurs, the PTC Resettable Fuse will open and interrupt the current. This stops further damage from occurring in the circuit. After the fault clears, the fuse will automatically reset itself and the circuit will start functioning normally again.

The working principle of the YPBJ9.40T is surprisingly simple. It is composed of a heated conductive element, which is connected with an encapsulated material. When the fuse is operating normally, the conductive element stays heated to a certain level. When the current exceeds the rated value, the heating of the conductive element will increase, causing the internal Joule heating to expand the encapsulated material. This expansion opens the internal contacts, severing the connection and interrupting the current.

When the current and voltage drop below the rated level, the conductive element cools down, resulting in the encapsulated material contracting back into its original shape. This closes the internal contacts, completing the circuit. The circuit is then once again functioning normally.

This process is continuous, and the PTC Resettable Fuse will protect the circuit as long as the current and voltage remain within the rated values. This type of fuse is an attractive option due to its ability to reset itself after a fault and its lack of need for external monitoring or control.

In conclusion, the YPFBJ9.40T is a PTC Resettable Fuse with a rated current of 9.4A and a rated voltage of 250V. The fuse is designed to open automatically when an overload or surge occurs in the current and then reset itself when the current and voltage drop back to their original levels. It’s an attractive option due to its simple working principle and its ability to automatically reset itself without external control.

The specific data is subject to PDF, and the above content is for reference