MF-MSMF020-2 Circuit Protection

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PTC Resettable Fuses have been around for decades. The MF-MSMF020-2 is a particular variant of this type of fuse. It is designed to help protect sensitive electronic equipment, such as computers, from overcurrent and overvoltage damage. By using this type of fuse, the user can easily reset the fuse and reset the system, preventing expensive repairs or system crashes.

Application Field of MF-MSMF020-2

The MF-MSMF020-2 resin filled current limiting PTC resettable fuse is mainly used in control circuits and peripheral circuits of automation equipment. In addition, they are also frequently used in a variety of power electronic equipment, such as solar cells, LED lighting, and power supplies. In general, they are ideal for users that need to balance performance, cost, and robustness. The fuse is suitable for harsh environments, making it ideal for industrial applications.

Working Principle of MF-MSMF020-2

In the MF-MSMF020-2 resin filled current limiting PTC resettable fuse, the positive thermal coefficient PTC element is built into the fuse. The PTC element can sense the electric current when it passes through the fuse. When overload current flows, its self-heating increases, and the internal element temperature rises, resulting in an increase in resistance. If the active current continues to flow, the PTC element will reach a certain temperature. If the temperature is too high, the pre-compressed PTC element breaks into fragments and quickly stops the current. After the current is cut off, the contact between the PTC element and the terminal recovers, and the electric current can flow again.

The MF-MSMF020-2 has a wide operating temperature range, from -40 to 125 degrees Celsius. It is also highly reliable and has a long service life of up to 4000 cycles. In addition, it has very low on-state resistance and good electrical continuity, and offers quick response times to overcurrent events. The fuse has a wide range of current ratings, from 0.9A to 20A. Its over-current breaking capacity can reach 200A.

Conclusion

The MF-MSMF020-2 is a high-performance and cost-effective PTC Resettable Fuse. It has a wide range of application areas, such as in the control circuits and peripheral circuits of automation equipment, as well as for solar cells, LED lighting, and power supplies. With its wide operating temperature range, high reliability, and long service life, it is one of the best solutions for protecting your sensitive electronic equipment from overcurrent and overvoltage damage.

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