RGEF800-2 Circuit Protection

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PTC Resettable Fuses are a form of overcurrent protection that can be used in a variety of applications, from portable electronics to industrial/consumer devices. The RGEF800-2 is an example of a resettable fuse typically used in a broader range of industrial applications. This article will provide an overview of the RGEF800-2 application field and working principle.

Applications for the RGEF800-2 include power supplies, converters, medical equipment, HVAC systems, lighting, telecommunications, consumer electronics, and other higher power-drawing devices. The RGEF800-2 provides overcurrent protection and is suitable for a wide range of applications. In addition to protecting against excessive inrush currents during power-on, the RGEF800-2 also protects against short-circuits, and can be used in applications with higher surge currents, including motor starting.

The RGEF800-2 provides overcurrent protection along with convenient resettable fuse features, and the size of the device makes it easier to use in multiple applications. The RGEF800-2 is designed with a fixed trip point of 8 A, and is composed of two components: a PTC element (resettable element) and a bi-metal element. The purpose of the PTC element is to limit the flow of current when an overcurrent event occurs. When the current exceeds the trip point, the PTC element increases its resistance, thereby limiting the current.

The bi-metal element’s purpose is to act as a switch which will open the circuit and disconnect the power supply when the current exceeds the trip point. This ensures the safety of the circuitry and components in the event of an overcurrent event. However, the bi-metal element also allows the fuse to reset itself and provide protection against further surges or short-circuits.

In operation, the fuse will initially allow a higher inrush current to pass through during power-on. This inrush current is necessary to get the device up and running. However, if the current exceeds 8 A, the PTC element will increase its resistance which limits the amount of current that can flow through the device. This also causes the bi-metal element to open the circuit, thus protecting the device from further damage.

The RGEF800-2 is a great solution for protecting higher-power applications from overcurrent events. It is rated to handle up to 8 A of current and is designed to reset after an overload or short-circuit event. With the two components of the RGEF800-2 working together, electrical components are kept safe while also providing reliable protection.

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