250S130VZR Circuit Protection

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PTC Resettable Fuses are widely used for overcurrent protection in power supply units, consumer electronics and automotive applications. They have become the popular choice for many applications because of their innate thermal characteristics, and the ability to reset after thermal runaway has occurred. The 250S130VZR is a PTC resettable fuse designed to protect the load from overcurrent events and provide circuit protection for all types of electronic equipment.

Application Field

The 250S130VZR is designed to protect against short circuits, overloads, and overtemperature conditions in equipment. Ideal applications include DC supply protection, overcurrent protection, overvoltage protection, and overtemperature protection in consumer electronics, power supply units, automotive applications, and industrial control systems. This PTC resettable fuse provides the ultimate solution for safeguarding circuits against the dangers of overcurrent and short circuits.

The 250S130VZR is specifically designed for applications where additional overcurrent protection is needed. It is perfect for applications requiring greater performance than conventional, fast-acting fuses, such as those found in consumer electronics. PTC resettable fuses prevent further damage caused by overcurrent or short circuit events, by resetting themselves to limit damage to the circuit and safely eliminate it from the environment.

Working Principle

The 250S130VZR is based on a self-resettable Polymer Positive Temperature Coefficient (PPTC) device. This PTC resettable fuse provides protection by limiting progressive current increases in the event of an overcurrent condition, such as a short circuit or an overload. The fuse has a built-in thermistor that increases resistance with increasing temperature. When the fuse reaches its current limit, the internal temperature of the device rises, which increases resistance and reduces the flow of current.

The increased resistance causes the flow of current to be further reduced, thus protecting the load from any further damage. As the temperature reduces, so does the resistance and when it reaches a predetermined level, the fuse will revert to its original resistance, allowing current to flow normally again. This provides a self-resetting feature allowing the fuse to automatically reset itself after the overcurrent condition has been removed.

The 250S130VZR PTC resettable fuse is designed to reach its reset resistance within a specified temperature, allowing minimal change in peak power dissipation. The PTC resettable fuse is also designed to limit the energy let through by the fuse in case of an overcurrent condition, allowing controlled stalling to minimize damage to the load. This is especially important in applications that require time to shut off other components, such as motor drives.

Conclusion

The 250S130VZR PTC Resettable Fuse is designed to provide overcurrent protection in a wide variety of applications. Its self-resetting Polymer Positive Temperature Coefficient design ensures that optimum protection is always maintained, throughout the lifetime of the product.

The 250S130VZR provides a reliable, self-resetting overcurrent protection solution in electronic safety applications, such as consumer electronics, power supply units, automotive applications, and industrial control systems. Its superior design ensures reliable protection in the event of an overcurrent condition, thus avoiding any further damage to the protected load.

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