72R300XMR

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PTC Resettable Fuses are an efficient device for electrical protection. They are used for controlling the flow of electricity in a system, protecting it from damage due to overloaded circuits, short circuits or other hazardous situations. One example is 72R300XMR, a two-pole re-settable fuse from Littelfuse. This device combines the benefits of the standard PTC resettable fuse with other desirable features, such as high current-carrying capacity and fast trip times.

The 72R300XMR has a rated current of 300 amperes, and its rated voltage ranges from 12 volts to 57 volts. This fuse has a wide range of applications, including over-current protection in automotive, industrial, consumer and healthcare products, as well as power levels from 3 amperes up to 300 amperes. It is a two-pole fuse, meaning that both poles of the fuse must be connected before it will function correctly.

In terms of working principle, the 72R300XMR PTC resettable fuse functions by utilizing two different components — an electronic temperature sensitive switch and a PTC element. The electronic temperature switch opens the circuit when a pre-determined temperature is reached, while the PTC element prevents the current from continuing to flow until the temperature is allowed to cool. Because of their high current-carrying capacity and fast trip times, these fuses can be used in high-power applications, making them ideal for applications that require precise current control.

The 72R300XMR has several properties that make it desirable for certain applications. It has a high current-carrying capacity, making it capable of safely protecting high-power systems. In addition, the PTC element ensures that the fuse will react quickly to temperature rise, allowing it to quickly protect a system from overload. The two-pole design is also beneficial, as it allows the fuse to function even when an open-circuit or short circuit situation is present.

The 72R300XMR PTC resettable fuse is a powerful, reliable device for use in electrical protection applications. Its high current-carrying capacity and fast trip times make it suitable for many demanding applications, while its two-pole design allows it to be used even in situations where an open or short circuit is present. Utilizing a combination of an electronic switch and PTC element, this fuse is able to rapidly react to temperature rise and cut power to prevent system damage.

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