PFMT.013.250.A.2 Circuit Protection

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PTC Resettable Fuses

PTC resettable fuses, also commonly known as polymeric positive temperature coefficient (PPTC) resettable fuses, are a form of overcurrent protection that includes a built-in reset mechanism. It offers a high level of protection for circuits and components and is a much more reliable option than traditional fuse types. The main advantages that PTC resettable fuses have over traditional fuses are their cost-efficiency and extended service life.

PFMT.013.250.A.2 is a PTC resettable fuse that is used in a wide variety of circuits and applications. It is a self-restoring, self-zeroing fuse which can be reset multiple times after tripping due to an overload. It has a trip current setting of 250mA and a maximum voltage rating of 250V. The PFMT.013.250.A.2 is designed for use in applications that require protection against low-level overcurrent or short circuit conditions. It is ideal for use in a wide range of applications including automotive, industrial, and consumer electronics.

Application Field

The PFMT.013.250.A.2 is a versatile and reliable protection solution that is suitable for most applications. Its small size and low cost make it ideal for use in small, space-constrained applications. It is designed to be used in applications such as: automotive HVAC systems, flashlights, consumer electronics, radios, computers, power supplies, AC adapters, and more. Its high degree of accuracy and fast response time make it well suited for use in mission-critical applications.

Working Principle

The PFMT.013.250.A.2 fuse operates on a simple but highly effective principle. It consists of a polymeric positive temperature coefficient element, typically made from a combination of semiconducting polymers and additives to give it a thermally sensitive characteristic. When the current through the fuse element rises beyond the set level, the temperature within the element increases rapidly, leading to a sudden increase in the resistance of the element. This in turn leads to a sudden drop in current, thus protecting the device from any excessive current. Once the current drops, the element cools down and reset automatically, enabling the fuse to be reset and used again.

The PFMT.013.250.A.2 is a cost-effective and highly reliable overcurrent protection solution for many circuits and components. Its unique resetting mechanism makes it ideal for use in a wide range of applications where reliability and performance are of paramount importance. It offers reliable protection against overheating and short circuiting, thus ensuring the safe and continuous operation of the device and its components.

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