MF-VS210U-0

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PTC resettable fuses, also known as polymeric positive temperature coefficient resettable fuses, are current limiting devices which are used where a conventional fuse is not suitable due to the lack of availability or cost considerations. In particular, resettable fuses are designed to automatically reset after a short period of over-current or overload conditions, while protecting the associated circuitry from damage due to continued excessive current levels. One example of a resettable fuse is the MF-VS210U-0.

Application Field of MF-VS210U-0

The MF-VS210U-0 belongs to a type of resettable fuse known as a PTC Resettable Fuse. It is designed for use in a wide range of applications where protection against over-current is desired, including computers, data networks, consumer electronics, automotive electronics and telecommunication equipment. Additionally, it is suitable for use in both AC and DC circuits.

Working Principle of MF-VS210U-0

The MF-VS210U-0 operates on the principle of a positive temperature coefficient (PTC) thermistor. This is a type of thermally sensitive device, which increases its resistance in response to an increase in temperature. When the current in the circuit exceeds the preset level of the fuse, the resulting increase in the fuse temperature causes its internal resistors to increase significantly. This in turn limits the current, and dissipates the energy of the overload as heat.

Once the temperature of the fuse has exceeded a predetermined Plimit, a thermal reset switch is triggered and the internal resistors are reset. This allows the circuit to return to its normal operating level once the fault condition has been removed, ensuring that the protected circuit is not permanently damaged.

The resettable nature of the MF-VS210U-0 makes it especially useful in applications where a fast response time is desired, and where a standard fuse may not be viable. The fuse is also suitable for high-current applications, with a surge rating of up to 20 amps.

The MF-VS210U-0 is a great choice for use in a variety of applications, providing fast and reliable protection against over-currents and surges. Its ability to reset itself after an overload, ensures that the protected circuit is not permanently damaged, saving time and money in the long run.

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