AGRF500S-1.0

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PTC resettable fuses, or polymeric positive temperature coefficient resettable protection devices, are self-resetting thermal circuit breakers. They provide improved safety and electrical reliability for a broad range of applications. PTC resettable fuses prevent dangerous overcurrents, overvoltage, and short-circuits. AGRF500S-1.0 is one type of resettable fuse, and its application field and working principle is discussed in this article.

Theapplication field of AGRF500S-1.0 is wide which includes USB products, medical, audio, consumer electronics, communication, automotive and aviation products. It is suitable for various applications such as battery or power line protection, lightning protection, energy saving lighting, and intermittent power supply.

The working principle of AGRF500S-1.0 is simple. It features a metal-oxide-varistor (MOV) element sandwiched between two connecting plates, which can sense any abnormal current and shut down the circuit within a few seconds. When the current across the MOV element goes beyond its rated value, the device can quickly identify the fault and send an alarm to the controller to shut down the power. After the fault is cleared, the device can self-reset and restart the operation without manually resetting it every time.

The structure of AGRF500S-1.0 consists of a coil and a thermistor. When an abnormal high current flows through the fuse, the coil and thermistor will heat up to a predetermined temperature, causing the coil to expand and break the power connection. Once the circuit is broken, the current will stop flowing and the device can reset automatically after the heating effect is dissipated. The device is designed to self-reset without manual intervention. It can also provide an audible indication that it has tripped.

Another advantage of the AGRF500S-1.0 is its ability to protect equipment from high voltage spikes. When a voltage spike exceeds the rated value, the MOV element will trip the fuse, effectively protecting the connected device from damage. This protection is particularly important in outdoor activities and environments, where power spikes occur very frequently.

AGRF500S-1.0 also features low operating temperature and low heat generation, making it suitable for use in confined spaces. It is commonly used in security or military operations, where its low thermal profile is beneficial for both the users and the environment.

Overall, the AGRF500S-1.0 is a reliable andefficient PTC resettable fuse, suitable for a wide range of applications. It provides immediate and automatic overcurrent protection, has low heat generation, is easily self-reset, and can protect equipment from high voltage spikes. Thus, it improves safety and reliability, making it a great choice in many industrial and consumer applications.

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