PFMT.013.250.C.2 Circuit Protection

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If you\'re familiar with PTC Resettable Fuses, you\'ll know that the PFMT.013.250.C.2 is one of the common types used. This article will discuss the application field and working principle of PFMT.013.250.C.2 Resettable Fuses.

A PTC Resettable Fuse, or PPTC (positive temperature coefficient of resistance) fuse, is a type of self-resetting fuse which uses a thermally sensitive resistor as its main component. This type of metal oxide resistor heats up when exposed to an over-current situation, allowing current to pass. It then cools off slowly when the overload is stopped, and is reset once the current is removed. This type of fuse can be used for a wide variety of applications in electronics, including circuit protection, over-current protection, and current limiting.

The PFMT.013.250.C.2 type of PTC resetteable fuse is a type 2 current-limiting fuse with a rated voltage of 250V AC/DC. It is commonly used in high-end consumer electronics such as TVs and audio systems for circuit protection, as well as automotive electronics such as starters and alternators. It is also used in industrial equipment such as refrigerators, vending machines and ovens.

As with all PTC resetteable fuses, the working principle behind the PFMT.013.250.C.2 is based on thermally sensitive semiconductor technology. In this type of fuse, a semiconductor material with a positive temperature coefficient (PTC) of resistance is used as the main component. The fuse consists of four parts: the positive temperature coefficient material, a metal oxide varistor, an internal heater element, and a terminal block.

When the current passing through the fuse exceeds its rated current, an overload condition is created. This rapid increase in current causes the internal heater element, which is embedded in the positive temperature coefficient material, to heat up rapidly, thus increasing its resistance. This increased resistance reduces the current passing through the element, thus minimizing the potential of an overload. Once the overload condition is removed, the element cools off and the fuse is reset.

Aside from its use in consumer electronics and automotive electronics, the PFMT.013.250.C.2 can also be used in industrial equipment such as motors and generators, HVAC systems, and UPS systems. It is also used for surge protection in a variety of lighting applications. The main advantage of the PTC resetteable fuse is that it can be reset multiple times, thus reducing the need for replacement fuses. This makes the PTC resetteable fuse a cost-effective solution for protecting electrical systems.

In conclusion, the PFMT.013.250.C.2 is a type of PTC Resettable Fuse that is used for a wide variety of applications. Its working principle is based on thermally sensitive semiconductor technology, which allows the fuse to reset itself once an overload condition is stopped. It is widely used for circuit protection, over-current protection, and current limiting in consumer electronics, automotive electronics, and industrial equipment. By using the PTC resetteable fuse, consumers can save money by eliminating the need for replacing blown fuses.

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