PFUF.020.2 Circuit Protection

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PTC Resettable Fuses are over-current protection devices used to protect electrical systems in a wide range of consumer electronics, automotive, and industrial applications. PFUF.020.2 is a member of the family and is specifically designed for a variety of operations. In this article, we shall discuss the application field and the general working principle of the PFUF.020.2.

The PFUF.020.2 is a two-phase applications specific to the electrical and electronics industry. It is designed to protect against short-circuits, thermal overloads, and supply overloads. It is ideal for use in a broad range of industrial and consumer electronics products, such as motors, switchgear, circuit breakers, relays, batteries, computers, and power supplies. The PFUF.020.2 can be used in a variety of applications, including automotive, medical equipment, office equipment, communication systems, power supplies, and other electrically powered devices.

The PFUF.020.2 is an integrated one-piece design, which is both robust and space efficient. Its main feature is its high current capacity of up to 20A. It is made up of a PTC element, an isolator, an interruptor, and a protective cover. It is extremely reliable, particularly in the event of an overload that exceeds the designed electrical current limits.

The principle of operation of the PTC Resettable Fuse is based on the thermistor effect. When an excessive electrical current flows through the unit, it generates heat, which causes the internal resistance of the unit to increase, in turn raising the temperature of the unit. Once the temperature of the unit reaches the set-point, the unit trips, cutting off the supply of current.

When the excessive current has been eliminated, the temperature of the unit will drop, the internal resistance will decrease, and the unit will reset automatically allowing the current to resume. As the unit cycles off and on, it will gradually start to deteriorate until eventually, it will fail completely if left unprotected.

The PFUF.020.2 also features a calibration curve that enables it to respond to overloads at a level that won\'t damage the electronic equipment or system it is protecting. The calibration can be adjusted to allow for differences in load and working temperature. This helps to ensure that the PTC Resettable Fuse operates at peak efficiency throughout its expected operating life.

The PTC Resettable Fuse is one of the most reliable protection devices available and is ideal for protecting electrical systems from power related issues. Its high current capacity, robust design, and adjustable calibration make it an ideal choice for powering and protecting a wide range of industrial and consumer electronics. The PFUF.020.2 is an integral part of any electrical design, ensuring that the system remains reliable and protected from power related dangers.

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