RGEF700-1

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PTC resettable fuses are a type of overcurrent protection device that offer high current protection with an inherent current limiting characteristic, while at the same time providing the ability to reset itself after a trip condition. One example of this type of fuse is the RGEF700-1. In this article, we will discuss the application field and working principle of the RGEF700-1.

The most common application field for the RGEF700-1 is secondary protection of low voltage power supplies, data and telecom systems, as well as devices with high DC voltage input and output voltages. It is also used for secondary protection in applications including portable electronics, LED lighting, automotive electronics, and other applications that require high current protection with a reset capability.

The RGEF700-1 is based on the solid-state switching principle, where a PTC (positive temperature coefficient) element is used to switch the current-limiting circuit. This PTC element is designed to limit the current at a certain point, and when the current exceeds this limit, it triggers a current- limiting circuit. The current-limiting circuit then switches off the power supply, effectively protecting the device. After the fault is cleared, the device can be reset and power supply resumed.

The RGEF700-1 has excellent surge protection, with a high peak current capability up to 8 kA, and a high protection against over-voltage. It also has a low capacitance, increasing its effectiveness for protection against high frequency transients. The fuse is designed to trip at a high or low current situation, and it is also protected against over-temperature conditions. Once the trip occurs, the reset time is adjustable and can range from 6 ms to 600 ms.

In conclusion, the RGEF700-1 provides an ideal solution for secondary protection of low voltage power supplies, data and telecom systems, as well as devices with high DC voltage input and output voltages. It is capable of performing both current limiting and over-temperature protection, as well as providing a reset capability, making it suitable for a wide range of applications.

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