MF-RHT450-2

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PTC Resettable Fuses are designed to be a safer and more reliable means of protecting circuits from overload or short circuit faults. The MF-RHT450-2 is an encapsulated resettable fuse based on fused polymeric technology, developed by Polytronics. The fuse is designed to replace glass fuses for circuits that require higher current protection with shorter cycle times. The MF-RHT450-2 is a medium temperature rated fuse with a voltage rating of 250 VAC.

The working principle of resettable fuses, including the MF-RHT450-2, is based on a polymeric material that changes from its original state when overloaded, or a short-circuit current passes through it. The material is designed to melt when the current reaches its limit, interrupting the flow of electricity to the protected circuit. After the fault is cleared, the fuse will reset itself, allowing the circuit to be restarted. The amount of energy needed to melt the polymeric material is usually too low to cause ignition or burning.

Resettable fuses provide faster response times than traditional glass fuses, resulting in more reliable circuit protection. The MF-RHT450-2 is specifically designed for portable electrical and electronic equipment, including communications and medical equipment, as well as arc welding systems. The fuse has a wide temperature range (-55°C~125°C), which makes it suitable for use in high temperature applications. Its low profile design also makes it well suited for applications with limited space. Additionally,its fast response time also makes the MF-RHT450-2 suitable for use in high switching frequency conditions.

The MF-RHT450-2 is UL approved, adding to its wide range of applications. It can be applied in a variety of medium current circuits, such as mobile phone chargers, portable power supplies, instruments and toys. It can also be used in circuits with higher current ratings, such as LCD TVs and motor controls.

In conclusion, the MF-RHT450-2 resettable fuse is a reliable and robust solution for medium current circuits, offering fast response times and excellent temperature performance. Its low profile design makes it suitable for installation in cramped spaces. Additionally, its UL approval makes it an ideal choice for a wide range of applications, from portable electronics to power supplies and more.

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