0255002.M

0255002.M Application Field and Working Principle

The 0255002.M makes use of an array of sophisticated technical features to provide a range of powerful electrical protection benefits in a range of applications.

Application Field

The 0255002.M is ideal for a variety of applications, including the protection of production equipment, motor control systems, lighting, circuits, and other electrical circuits.

In addition to its traditional use in consumer and commercial electronics, the 0255002.M is also suitable for additional applications, such as power supply systems expecting high surge transient currents, automotive power electronic circuits, and mobile communication units.

Working Principle

The 0255002.M functions as a temperature-sensitive thyristor, allowing it to detect the rise in temperature caused by an over current situation. When the over current occurs, the thyristor triggers a controlled opening of the resistor-controlled arc chamber, thereby disconnecting the current.

The 0255002.M has several advantages, including its fast response time, sensitivity to small current, and high current carrying capability.

Structure

The 0255002.M is composed of three main parts: a resistor-controlled arc chamber, a temperature-sensitive thyristor, and a fuse element.

The resistor-controlled arc chamber is composed of a double-sided, air-insulated enclosure. The enclosure is filled with a ceramic foam, which serves to limit the arc arcings during an over-current situation. The resistance of the foam is controlled by a pressure regulator.

The thyristor is composed of a voltage-sense diode and a temperature-sensitive device. The voltage-sense diode detects the rise in voltage due to an over-current situation and triggers a controlled opening of the resistor-controlled arc chamber. The thyristor also triggers the opening of the fuse element.

The fuse element is composed of a positive temperature coefficient material, which expands when heated. When heated by the thyristor, the material expands and physically opens, disconnecting the current.

Conclusion

The 0255002.M is an ideal fusing system for a variety of applications. Its efficient and fast-acting components make it well-suited for protecting circuits from overcurrent damage. Its precise temperature-sensitive device ensures a reliable and safe protection.