HVR250P145CF

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PTC resettable fuses are widely used in various industries, including automotive, consumer electronics, telecom, medical, self-service, HVAC, lighting, and audio/video industries. The HVR250P145CF is a type of resettable fuse, designed to provide fast, reliable overload and short circuit protection for a variety of equipment. It features an operating voltage of 125Vac, a maximum pulse current of 250A, and a temperature rating of -40 to 85 C. The fuse body is constructed from high temperature polymeric material, providing excellent resistance to moisture, corrosion, and impact.

The working principle of the HVR250P145CF is based on a thermally positive characteristic. When the device is subjected to an overload current, the temperature of the fuse element increases faster than the ambient temperature. This generates more heat and causes the material of the fuse element to expand, resulting in an open circuit. When the fault is cleared and the device is cooled down, the material of the fuse element returns to its original state, once again forming a closed circuit. This resetting process is instantaneous and automatically reactivates the device once the fault is cleared, without the need for any external intervention.

The HVR250P145CF is suitable for a wide range of applications. It is ideal for protecting DC circuits such as: automotive, telecom, industrial, railway, and medical equipment. Additionally, it is suitable for AC circuits, including: HVAC, lighting, security, and audio/video equipment. Furthermore, it is designed to provide long life, reliable protection for power supplies and chargers. It is easy to install and can be used with both AC and DC voltage applications.

The HVR250P145CF is fabricated using a special high temperature polymeric material. The thermally positive characteristics of this material protect it from extreme environmental conditions, providing reliable protection for a variety of devices. Furthermore, the fuse is designed with a low resistance and a high maximum pulse current, making it suitable for a variety of devices and applications. Finally, it has a high dielectric strength rating and is UL recognized.

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