RGEF400-AP

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PTC resettable fuses are an important part of the circuit protection industry. RGEF400-AP is a Polymeric Positive Temperature Coefficient (PPTC) resettable fuse from Littelfuse. This fuse has a wide variety of applications and a wide working temperature range, meeting the demands of many different operating scenarios. With the combination of their high temperature and fast reacting capabilities, they provide efficient overcurrent protection.

The RGEF400-AP is a fuse with a high current rating of 400A, which is ideal for DC/AC applications where large currents need to be managed. The fuse includes a built-in electronic switch, which can be used to direct current to the load and used for remote device reset in case of an overload or short circuit. The RGEF400-AP is certified to IEC 60002-1 standards for use in automotive, telecom, datacom, and industrial applications.

The working principle of the RGEF400-AP is very simple. When the current rating of the fuse is exceeded, the built-in temperature sensitive resistor will generate heat which rapidly increases the resistance of the device. This will reduce the current that can flow through it, removing the fault and resetting the device in the process. In general, the fuse will shut off quickly, immediately preventing further damage and reducing the risk of fires. When the fault is removed, the device can be reset to its original condition.

In addition, the RGEF400-AP has several features which make it ideal for different types of applications. Firstly, the device has a very fast response time which is essential for protecting high-current applications. Additionally, the device has excellent voltage and temperature stability, meaning it can be safely used in a wide range of environmental conditions. Lastly, the device has a low internal resistance which ensures greater efficiency and reliability.

Overall, the RGEF400-AP is an excellent resettable fuse with a range of applications and a wide temperature range. With its robust construction and reliable protection switch, the fuse is ideal for both DC and AC applications. It provides efficient overcurrent protection with fast response time and high temperature and voltage stability. The device also has a low internal resistance, meaning it is both reliable and efficient.

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