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Introduction

PTC Resettable Fuses (“Polymer Resettable Fuses”) are an innovative type of fuse technology that utilizes an alternative means of protection from surges and overcurrent, compared to the traditional and widely-used one-time-use fuses. RUE160 is a PTC Resettable Fuse-series, specifically designed to offer the best combination of current limiting, fast tripping time, and low resistance in a single package. In this article, we shall summarize the application field and working principle of RUE160 Resettable Fuses.

Application Field

RUE160 Resettable Fuses are primarily designed to protect circuits and power sources from overvoltage, overcurrent, and short-circuits. The resettable feature of the fuses makes it particularly suitable for scenarios where such events are likely to occur frequently. Applications for RUE160 Resettable Fuses include consumer electronics, automotive systems, and home appliances.

Working Principle

RUE160 Resettable Fuses function on the same principle as one-time-use fuses, except that the former offers an integrated resettable feature. In the presence of an overvoltage or overcurrent event, the PTC’s semiconductor element will start to melt, thereby increasing its resistance and cutting off the circuit. After removal of the overcurrent, the PTC element will partially cool and start conducting current again, thus resetting the fuse. This resettable feature renders RUE160 suitable for applications where the risk of overvoltage or overcurrent is high.

Features of RUE160 Resettable Fuses

• Compact sizes, with 10.2x6.8mm footprint
• Overvoltage protection up to 12V
• Overcurrent cutoff range from 0.3A to 0.72A
• Resistance values starting from 3m Ohm
• Maximum working temperature of +85 °C
• UL, CSA, TUV, SGS certifications
• RoHS and REACH compliant

Conclusion

RUE160 Resettable Fuses offer a great combination of features that make them suitable for many applications. The main advantages of RUE160 are its small size, high maximum working temperature, outstanding overvoltage protection, and resettable feature. The PTC element also offers a very good cut-off accuracy of 0.3A to 0.72A.

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