B59313R0240B010

PTC Resettable Fuses: B59313R0240B010 Application Field and Working Principle

PTC (Positive Temperature Coefficient) resettable fuses are thermally operated devices designed to provide a resettable circuit protection against overcurrent faults in electronic circuits. The B59313R0240B010 PTC resettable fuse, made by EPCOS, is an AC/DC thermal protector suitable for use in a wide range of electrical and electronic equipment. The product is designed for a range of applications, including equipment with multiple power supplies, in computer and peripheral equipment, DVD players, LCD monitors, electronic vehicles, and other electronic and electrical products. This article will discuss the application field and working principle of B59313R0240B010 PTC resettable fuses.

Application field of B59313R0240B010 PTC resettable fuses

The B59313R0240B010 product is a ratings-dependent type of PTC resettable fuse. This type of product provides a small envelope, low profile, quick-acting, and resettable solution for the protection of many electronic circuits. It is designed to provide protection against short circuits and overcurrents. The B59313R0240B010 is rated with an interrupting capacity of up to 50A. It can be employed in applications that are not subject to hazardous performance requirements as defined in section 2 of IEC/EN 60950-1. Typical applications include personal computers and other general equipment, mass-market consumer devices, and devices intended for use in vehicles.

Working Principle of B59313R0240B010 PTC Resettable Fuses

PTC resettable fuses are based on a thermally activated polymeric device. Upon an overcurrent condition, a polymeric material begins to heat up, and when the temperature reaches a certain threshold, a switching event occurs and the flow of current is interrupted. The B59313R0240B010 resettable fuse has a ratings-dependent technology based on the PTC element which can adjust the temperature threshold in order to provide an appropriate level of protection for different ratings.

When a current larger than the rated current flows through the B59313R0240B010 PTC resettable fuse, an overcurrent condition occurs. In this situation, thermal energy is generated in the fuse and causes an increase in temperature. This thermal energy is generated by the Joule heating effect, caused by current flowing through the PTC itself. As the temperature rises, the resistance of the PTC increases, leading to an interruption of the current. Once the current is below the rated level, the PTC cools down and the resistance of the PTC decreases, allowing the circuit to resume normal operation.

Conclusion

The B59313R0240B010 PTC resettable fuse is a suitable product for providing a resettable circuit protection against overcurrent faults in electronic circuits. It is rated with an interrupting capacity of up to 50A and is suitable for a wide range of applications, including equipment with multiple power supplies, DVD players, LCD monitors, and other electrical and electronic products. The working principle of this product is based on a thermally activated polymeric material, which heats up when an overcurrent condition occurs and causes the flow of current to be interrupted. Once the current is back to a safe level, the PTC cools down and the resistance of the PTC decreases, allowing the circuit to resume normal operation.