RGEF700

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PTC resettable fuses are essential elements whose main function is to safely manage electrical energy flows. In particular, the RGEF700 specializes in providing reliable current protection by reacting quickly to an increase in current compared to the rated value, and then resetting when the excess current condition is removed. This article will provide an overview of the RGEF700 application field and working principle.

Application Field

The RGEF700 can be used in a wide range of applications, from consumer electronics, automotive and industrial, to medical and communications applications. It can provide effective current protection for standard applications and systems, such as cladding protection, tight-tolerance overcurrent, short circuit protection, and line side surge protection. It is also a cost-effective alternative to traditional fusing techniques, as it can prevent damage from excess current while offering an economical approach, especially for volatile power supplies.

The RGEF700 is also suitable for applications affected by a high voltage differential over short periods of time. Its resetting capability allows the product to retain its properties even after absorption of a high voltage pulse. This feature makes it ideal for use in equipment such as power meters, communication systems, surge arresters, and industrial circuits.

Working Principle

At its most basic, the RGEF700\'s functioning involves comparing the current flow to the rated value, and initiating action when the former exceeds the latter. This action is achieved through a thermally activated process, in which an increase in current causes the fuse to heat up, until the set-active temperature is reached.

When this temperature is reached, the fuse deflects away from the set-inactive position it was initially in, causing it to move to its mid-position. This causes the current flow to be reduced to a lower, predetermined level, thus preventing the circuit from potentially sustaining damage. This current is maintained until the device is reset, and it can only be done so once the temperature reduces to below the set-inactive value.

By keeping the temperature and current levels within the preset parameters, the RGEF700 fulfils its primary function of providing reliable current protection within applications. It can also guarantee its quality and reliability by undergoing comprehensive testing before leaving the production line. This includes an ageing test, which helps ensure the product\'s long-term reliability by simulating actual working conditions for an extended period of time.

Conclusion

The RGEF700 is an innovative product that provides reliable current protection within a wide range of applications. Its functioning is based on a thermally activated action, which reacts quickly to an exceeding of the current rating before resetting when the current drops. Its cost-effectiveness, quick reaction, and resistance to voltage overshoots make it a versatile and reliable protection system, perfect for a diverse range of scenarios.

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