MF-R135-2

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PTC Resettable Fuses are a type of resettable device that helps to protect against the risk of short-circuits, over-voltage, and over-current in electronics systems. The MF-R135-2 is a general purpose PTC resettable fuse that is designed to provide reliable protection in a variety of applications. In this article, we’ll take a closer look at the application fields and working principles of the MF-R135-2.

Application Fields

The MF-R135-2 is well suited for high-power environments where reliable protection is a must. It can be used in industrial and commercial applications, including electric motors, pumps, compressors, HVAC, elevators, power supplies, automotive, and many other types of appliances and electronics. This fuse is specifically designed to protect against over-current, over-voltage, and short-circuit conditions, helping to reduce the risk of system failure due to component damage.

Working Principle

The MF-R135-2 operates on a simple “thermal-block” principle which combines two separate functions in one package. The first function is the protection against overcurrent and short-circuit conditions. When connected to a load, the fuse acts as a switch and limits the current flow to the safe operating levels. An internal PTC element monitors the load current and triggers the opening of the switch when the current passes past the rated value.

The second function of the fuse is its ability to safely “reset” itself after the over-current condition is cleared. The internal PTC element switches back to its original position automatically when the current drops to a safe level, allowing the circuit to resume its normal operation without the need for manual intervention. This makes the fuse ideal for applications where high reliability and low maintenance costs are key.

The MF-R135-2 has an operating current range of 0.5-65A, with operating temperatures of -55℃ to +125℃. It also has high surge protection up to 1000A, making it suitable for a wide range of high-power applications. The fuse is also UL-recognized, meaning that it has passed a strict set of safety tests and is qualified for use in most applications.

Conclusion

The MF-R135-2 is a general-purpose PTC resettable fuse that is designed to provide reliable protection against over-current, over-voltage, and short circuit conditions. It has a wide operating temperature range and can handle high surge current levels, making it suitable for a variety of high-power applications. The fuse is also UL-recognized, meaning that it meets the safety standards required for most commercial and industrial applications.

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