RUEF135

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PTC Resettable Fuses are becoming increasingly popular today, due to their numerous advantages over traditional fuses. The RUEF135 is a small PTC resealable fuse produced by RUEF. It is designed for use in variety of applications, such as circuit protection, power supply, DC-DC converters, and various automotive and industrial systems. This article will discuss the application field and working principle of the RUEF135.

Application Field

The RUEF135 PTC Resettable Fuse is designed for a wide range of applications; its low power consumption and small size make it suitable for use in a variety of situations. These fuses can be used in circuits with direct current (DC) and alternating current (AC) to protect against short circuits, excessive current, and over-voltage. Additionally, its fast response time can help protect equipment from severe damage in the event of a fault occurrence. As such, RUEF135 fuses can offer over-current protection for a variety of power supply, automotive, and industrial systems.

In particular, the RUEF135 is commonly used in automotive systems. Automobiles are intricate systems with many safety-critical components and a complex electrical system. As such, reliable over-current protection is essential to protect all the delicate components from damage. The RUEF135 PTC Resettable Fuse enables these automotive systems to protect against over-current, while quickly and easily resetting itself after the fault is cleared.

The RUEF135 can also be used in DC-DC converters. These converters are used in a variety of applications and, when a short circuit occurs, the current rapidly increases. This can lead to significant damage to the components if not quickly and safely contained. The RUEF135 enables this quickly and safe protection as it is capable of breaking the electric circuit in the event of an over-current, and then resetting itself when the fault is cleared.

Likewise, the RUEF135 is a popular choice for circuit protection in industrial systems. In these systems, a high-level of current protection is required to ensure the safety of components and personnel. The RUEF135 is able to quickly identify if current is exceeding the set threshold, breaking the circuit to prevent any further damage, and easily resetting the protection once the fault has been cleared.

Working Principle

The RUEF135 PTC Resettable Fuse uses a metal oxide varistor (MOV) as its active element. The MOV works as a variable resistor, able to regulate the flow of electric current by providing a non-linear resistance in the circuit. When the operating current passes through the fuse, the MOV generates a small amount of heat, which heats up the plastic body of the fuse and causes it to expand.

If the current exceeds the rated limit of the fuse, the MOV is unable to dissipate the additional heat. This causes the plastic body of the fuse to expand even further, breaking the electric circuit and cutting off the current. Once the current is cut off, the MOV cools down and the plastic body of the fuse contracts, thus resetting the fuse to its original position and allowing the circuit to reset itself. This allows the system to regain normal functionality once the fault is cleared.

In addition, the RUEF135 also incorporate an internal thermistor. This thermistor senses any internal temperature changes in the fuse and triggers the thermally-activated switch, which breaks the electric circuit even if the MOV is unable to do so. This provides an additional level of protection to ensure the fuse will protect the system from further damage in the event of a severe over-current.

Overall, the RUEF135 PTC Resettable Fuse is a popular choice for protecting complex systems where high levels of over-current protection are needed. Its attractive price, small size, and fast response time make it an ideal choice for circuit protection in a variety of applications, from automotive systems to DC-DC converters and industrial systems.

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