PFRA.040.2

PTC Resettable Fuses have a wide array of applications, but one of the most important ones is the PFRA.040.2 model. It is a type of fusible remainder link designed to protect against overload and short circuit conditions. These fuses are designed to avoid dangerous temperatures that could occur if the power exceeds the rated voltage. In most applications, PTC Resettable Fuses are used as primary protection devices in order to avoid the occurrence of catastrophes from high current or voltage shortages.

The PFRA.040.2 model is a standardized product of the PTC Resettable Fuses series. This product features a current rating of 2A to 6A , a voltage rating of 250VAC, and a power consumption of 6000VA. It also has a temperature rating of 150°C. As a self-resetting fuse, the PFRA.040.2 provides superior overcurrent protection and fast response in case of overloads. It is also designed to withstand a wide range of temperatures, thus making it perfect for use in high temperature applications.

The working principle of the PFRA.040.2 model is based on PTC (positive temperature coefficient) technology. When the temperature around the fuse increases, the resistance also increases. This increase in resistance will cause a decrease in current passing through the fuse, thus preventing overloads. When the temperature returns back to its normal range, the resistance will lower and the current will go back to its initial value. This process is repeated for each overcurrent and in result prevents damage from occurring.

The PFRA.040.2 model is also designed to have a low temperature coefficient, meaning that it will not require a significant temperature increase during overloads. As a result, it is well suited for use in high temperature applications, where the temperature range is more than 100°C. Additionally, the fuse is also available with different thermal protection options, like thermal disconnect and thermal reset. These additional features can provide additional protection against high temperature applications and can even prevent damage to the equipment.

In conclusion, the PFRA.040.2 model of PTC Resettable Fuses offers superior protection against overloads and short-circuit conditions. It is designed to withstand high temperatures and is available with additional thermal protection features. Additionally, it works with its own temperature coefficient and can provide reliable and repeatable protection against overloads and high temperatures.