MF-RG650-2 Circuit Protection

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PTC Resettable Fuses are devices used to protect circuits and equipment against over-current, overloads, and short-circuits. They are self-resetting and non-melting devices, meaning they will not melt down or catch fire when overloaded. The MF-RG650-2 is one such resettable fuse utilized in many different applications.

As a main component of the MF-RG650-2, the PTC element is comprised of a positive temperature coefficient (PTC) material, also known as a polymeric positive temperature coefficient (PPTC) material. This material has the property of increasing its resistance up to 500 times higher than normal when it is subjected to temperatures greater than its activation temperature (typically 70°C). This change in resistance value acts to protect the circuit and equipment from surges in the current.

The MF-RG650-2 has a variety of applications and can be employed in applications such as: electro-mechanical controls, lighting, motors, power supplies, audio equipment, computers, automotive electronics, aviation control systems, office equipment, and medical equipment. It can also be found in a wide range of consumer products such as air conditioners, cell phones, and car dashboard accessories.

The working principle of the MF-RG650-2 is based on the PTC element\'s temperature property. The fuse has two terminals – a positive and a negative. When the current flowing through the fuse exceeds its rated value, usually greater than 6.5A, it will heat up the PTC element to temperatures above its activation point. As a result, the resistance value of the PTC element increases significantly and begins limiting the current flowing through the circuit. When the current is reduced to a safe level, the PTC element will cool down to its normal temperature and the resistance will return to its original value.

In summary, the MF-RG650-2 is a resettable fuse that is utilized in a wide variety of applications, from consumer electronics to medical equipment. Its working principle is based on the PTC element’s temperature property, which increases its resistance up to 500 times greater than normal when temperatures are above its activation point. This increase in resistance value limits the current flowing through the circuit and protects the circuit and equipment from any surges in current.

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