MF-RG400-2 Circuit Protection

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PTC resettable fuses can be broadly divided into two categories, thermo-fuses and magnetic-fuses. The MF-RG400-2 belongs to the magnetic-fuse family. A magnetic-fuse consists of a coil and a magnetic core. When an overcurrent or a short-circuit occurs, the magnetic core immediately induces a magnetic force. This force is significantly increased with corresponding to the increase of current. Once it reaches a trip level, the magnetic force forces the reed to break, thus allowing the current to be rerouted and the protection level reset.

The MF-RG400-2 is a simple and easy-to-use PTC resettable fuse with an efficient low-power protection system. It is particularly useful in situations when high current is needed, yet a safety device is necessary for protection. This device is ideal for applications such as consumer electronics, digital cameras and other related products.

The MF-RG400-2 consists of a coil, a ferrite disk, a mercury switch, and a reed contact. The coil is wound around the ferrite disk and the mercury switch is placed over the ferrite disk. In normal operation, the reed contacts remain closed and the current flows through the device. When an overcurrent or short-circuit occurs, the mercury switch will open, cutting off the current. The magnetic force generated by the coil is also increased and can force the reed contact to break, allowing the current to be rerouted and the protection level reset.

The MF-RG400-2 has many advantages in comparison to traditional fuses. First, it is able to protect against both overcurrent and short-circuit. Second, it is small in size and light weight. Third, it is able to reset automatically without being replaced. Fourth, it can provide improved overcurrent protection compared to traditional fuses. Finally, it is easy to use and can be quickly installed.

In conclusion, the MF-RG400-2 is a reliable and efficient PTC resettable fuse that can protect devices against overcurrent and short-circuit. Its small size and light weight make it ideal for use in applications such as consumer electronics, digital cameras and other related products. Its ability to reset automatically and improved overcurrent protection makes it a great choice for those who want a reliable and safe device.

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