YQB120N0025

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PTC resettable fuses are an innovative type of overcurrent protection device that offer high safety and reliability. They are widely used in industrial, automotive and medical device applications. The YQB120N0025 is one such device. This article provides an overview of the application field and working principle of the YQB120N0025 PTC resettable fuse.

Application Field:

The YQB120N0025 PTC resettable fuse is a standby current device suited for AC/DC applications. This includes use on AC power transformers, DC to AC converters, and other AC/DC switching applications. It has an operating current range between 5A and 25A and can withstand power surges up to 60V. The fuse is also designed with reverse-dissipation to prevent accidental overcurrent damage.

Working Principle:

PTC resettable fuses use a polymeric positive temperature coefficient (PPTC) to detect overcurrent. The fuse operates when the sensing element is heated by current. The heated sensing element expands, causing a gap to form between two electrodes. If the current exceeds preset limits, the electrodes form a short circuit, resulting in the fuse opening. The fuse can then be manually reset.

A unique feature of the YQB120N0025 PTC resettable fuse is its adjustable current threshold. This allows the current limit to be adjusted to a higher or lower value than the default setting. This gives the user more control over the protection it provides and allows its use in a variety of AC/DC applications.

The YQB120N0025 PTC resettable fuse is a reliable and cost-effective overcurrent protection device for AC/DC applications. It is designed with safety in mind and can withstand power surges up to60V. The adjustable current threshold allows it to be used in a wide range of applications.

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