MF-RM025/240-2

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PTC resettable fuses, also known as Polyfuse, are one kind of over-current and short-circuit protective components. This type of fuse can automatically reset itself once over-current or short-circuit is removed. PTC resettable fuses also have fast acting feature and high-cutting capacity. They are widely used in various types of circuit protection applications. It can be used in series in the whole current carrying circuits or in parallel with the components for different types of load.

MF-RM025/240-2 PTC resettable fuse is designed with premium-grade SMD components. With its long electrical life and low contact resistance, this fuse is ideal for a wide range of applications. Based on the application requirements, the rated current and voltage can be selected from 0.25A to 10A and from 20V to 100V, respectively. This particular type of resettable fuse features low resistance, small size and low power loss.

The working principle of MF-RM025/240-2 PTC resettable fuse is quite simple. It comprises two parts: a positive temperature coefficient (PTC) element and a metal film resistive element. In normal conditions, the current is drawn through the resistive element, which limits the current flowing through the device. When the current exceeds the rated value of the resistive element, the PTC element quickly enters the self-heating state and the contact resistance increases rapidly. This increases the resistance to current flow, which will shut down the passage of current.

There are two main application fields of MF-RM025/240-2 PTC resettable fuse. It can be used in power supplies, chargers, adaptors, and USB ports as a device for current limiting, overload protection, and short circuit protection. It can also be used in portable electronic devices, such as laptops, tablets, and cell phones for protection against lightning strikes, overvoltage, reverse connections, and other similar faults.

PTC resettable fuses are one of the most reliable and cost-effective electrical components for circuit protection applications. MF-RM025/240-2 PTC resettable fuse with its advanced design and features offers superior performance. It has wide acceptance in the variety of its application fields and it is a preferred protection device for most manufacturers.

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