PFST.350

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PTC resettable fuses, which stands for polymer positive temperature coefficient (PPTC) fuses, are an increasingly popular form of electrical protection. They are used in a wide variety of applications, from consumer electronics to industrial automation. The PFST.350 is a popular PTC resettable fuse used for high power applications. In this article, we’ll take a look at the applications and working principles for the PFST.350.

The PFST.350 is a heat sensitive device, which means it works by responding to increases in temperature. It has a current rating of 350A and a rated voltage of up to 600VAC. Its main advantage is its ability to automatically trip and reset itself. This makes it ideal for applications that require reliable and consistent power protection, such as medical devices, automotive electronics, IEC inverters, welding machines and more.

When used in an application, the PFST.350 operates by detecting changes in current flow. When the current flow exceeds the rated operating current, the device will trip and open up the circuit. The built-in temperature sensor will then detect the increase in temperature and open up the circuit as a result. This process is known as temperature compensation, and it helps to prevent overheating and potential damage to the device.

When the device has tripped and opened the circuit, in order to restore power, the reset switch must be toggled off then on again. This will reset the device and allow current to flow through the circuit once again. It must be noted that the PFST.350 is designed to only reset a limited number of times before it needs to be replaced. This ensures that it will always perform reliably and accurately.

The PFST.350 is an ideal device for applications where a low operating current and high maximum current are required. Its ability to reset itself automatically makes it well-suited for applications that require frequent power interruption or require protection against surges. It is also well-suited for applications that require remote monitoring or operation, as the device is equipped with a visual indicator that lights up when power has been restored.

In conclusion, the PFST.350 is a versatile and reliable PTC resettable fuse that is ideal for applications that require frequent power interruption and reliable protection from excessive current. Its built-in temperature compensation ensures it will respond quickly and accurately to any changes in temperature, and its reset switch makes it easy to restore power after a trip. The device is also well-suited for applications that require remote monitoring and operation, and its low operating current and high maximum current make it highly versatile.

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