RXEF300-AP Circuit Protection

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PTC Resettable Fuses are a type of safety device designed to protect electrical circuits from excessive current. They are commonly used in consumer products, such as computers, cell phones, and other small electrical appliances, as well as in industrial applications. The RXEF300-AP is a typical PTC resettable fuse, and is commonly used for circuit protection.

The RXEF300-AP is a polyfuse, and it functions by using a positive temperature coefficient (PTC) to interrupt the current flow when the temperature rises above the triggering temperature. This triggering temperature is set during the manufacture of the device, and is usually between 70 and 105 degrees Celsius. When the current rises above the rated level, the fuse will heat up and trigger an internal reset which will open the circuit and stop the flow of electricity. Once the current drops, the device will cool down and reset itself, allowing the current to flow once again.

The RXEF300-AP has an applied voltage of up to 600V, and can support currents up to 10A. Additionally, it has a power dissipation rating of up to 0.3 watts. It also features a time-delay function which is adjustable with an external capacitor. This time-delay can be used to prevent the device from tripping on transient overloads. The operating temperature range of the RXEF300-AP is from -55°C to +125°C.

The RXEF300-AP is an ideal solution for a variety of applications, including power supplies, ground fault protection, over-current protection as well as motors and inverters. It is also suitable for applications such as printer power supplies, programming panel circuits and certain medical equipment. In these applications, the RXEF300-AP can provide reliable, efficient and safe circuit protection from overheating and dangerous current surges.

In summary, the RXEF300-AP is a reliable and robust resettable fuse which is suitable for a variety of applications where circuit protection from overcurrent and overheating is required. Its adjustable time-delay feature, combined with its low applied voltage and impressive current rating, make it an ideal choice for many applications.

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