PFRA.110.3

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PTC Resettable Fuses, or PPTC resettable fuses, are self-resetting fuses commonly used in consumer and industrial applications. They feature a positive temperature coefficient, or PTC, that is used to detect any overcurrent or excess temperature condition. When an overcurrent or excess temperature condition is detected, the PTC fuse will trip and open the circuit. This helps to protect devices connected to the circuit from damage due to excess power or temperature. The PTC fuse will then reset itself after the overcurrent or excess temperature condition has passed.

PFRA.110.3 is a specific type of PTC resettable fuse. It has a wide variety of uses, including protecting sensitive electronic equipment from damage due to power surges or thermal runaway. It is often used in the automotive, computer, and communication industries, amongst many others. It can also be used for things such as fan motors, lighting fixtures, and battery chargers. The PFRA.110.3 has an electrical current rating of 110A and with a low hold current of 3A.

The working principle of the PFRA.110.3 PTC Resettable Fuse is based on the high resistance/low current characteristics of PTC thermistors. A PTC thermistor is a temperature-sensitive component that has a positive temperature coefficient. The resistance of the PTC thermistor will increase as the temperature rises and will decrease as the temperature decreases. The PTC thermistor is placed in series with a current-carrying wire.

When operating in a normal condition, the PTC thermistor will pass a small amount of current, which is known as the hold current. In cases of an overcurrent or high temperature situation, the resistance of the PTC thermistor will increase dramatically, resulting in a dramatic decrease of current flow. This will trip the PTC resettable fuse and disconnect the input power to the device. After the over current or temperature situation has passed, the PTC thermistor will cool and reset itself, allowing the circuit to be powered up once again.

The PFRA.110.3 is an ideal solution for protecting sensitive electronic equipment from damage due to power surges and thermal runaway. Its working principle ensures that the device connected to the circuit will be protected from damage due to excess power or temperature, while also saving energy since it doesn’t require replacement afterwards. Not only does this save money, but it is also safer and more reliable than traditional fuses.

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