RGEF500 Circuit Protection

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PTC resettable fuses are a type of self-regulating fuse which offers circuit protection against electrical damages. It uses an integrated heat-sensitive resistor which automatically disconnects during the presence of an over-current or short-circuit at a predetermined current level. This fuse is different from the standard, or one-time-use only, fuse, because it has the ability to reset or reconnect after the dangerous current has been dealt with. It is often used as a reliable form of protection against electric shock, surges, malfunctions, and other hazards.

The RGEF500 is a type of PTC resettable fuse that features a small and compact size, along with a low thermal resistance. It has an operating voltage of 500V and a current rating of 0.2A-25A. This fuse is UL certified and is made of a flame-retardant, reinforced polyamide shell which helps prevent water ingress in wet conditions. It is suitable for applications such as household appliances, cordless devices, and automotive equipment.

The working principle of the RGEF500 PTC resettable fuse is that when a fault current passes through the device, the resistance value in the active circuit increases rapidly due to the heating effect. This action generates a voltage drop across the PTC element, which causes it to become non-conductive until the fault current is interrupted. Thereafter, the device will reset itself and resume its low-resistance state.

The RGEF500 helps to protect circuit from over-current and short-circuits which could lead to potential damage, and as such it provides a reliable and safe way to regulate or isolate current in a wide range of applications. Thanks to its compact size and high current rating, it is a popular choice for use in consumer and commercially available electronic appliances.

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