PFST.175

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PTC resettable fuses are a type of self-resetting circuit breaker which can efficiently protect current that passes through it from exceeding its maximum overload capacity. This type of fuse has an extremely low thermal coefficient of resistance, which allows it to automatically reset itself when it senses an overload or a short circuit in the circuit. PFST.175, in particular, is a type of resettable fuse designed to protect circuits in a variety of industries. In this article, we’ll discuss the application field and working principle of PFST.175.

PFST.175 is primarily used in a variety of low-voltage applications, such as individual circuits, multiple circuit formations, and mixed-circuit applications. Its ability to self-reset makes it an ideal choice for applications that are subject to continuous use and where the possibility of overload or short circuit is high. Additionally, PFST.175 is particularly well suited for applications that require a high degree of protection, such as medical equipment, electronic automotive systems, and industrial systems.

The working principle of PFST.175 is simple. When the current passing through the fuse exceeds the overload capacity by a certain amount, the fuse will trip and the current will be interrupted to prevent further damage to the circuit. The PTC element inside the fuse will gradually increase its resistance, which helps to quickly reduce the current, thus resetting the fuse. The fuse will remain off until the current passing through it is reduced to a level below the overload capacity at which point the PTC element will gradually decrease its resistance, allowing the current to flow again.

PFST.175 is also designed to be fail-safe, meaning it will continue to provide protection even if affected by dirt, humidity, corrosion, or vibration. The use of a precision thermosetting material used in the fuse ensures that the fuse will remain in the tripped state even if exposed to extreme temperatures or sudden power surges.

In conclusion, PFST.175 is a highly reliable and robust resettable fuse that is perfect for protecting circuits in many various applications. Its low thermal coefficient of resistance makes it ideal for circuits that are subject to continuous use, while its ability to self-reset and provide fail-safe protection ensure that the circuit remains protected even in extreme conditions.

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