MF-RHT400-2

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PTC Resettable Fuses

PTC resettable fuses, also known as polymeric positive temperature coefficient (PPTC) resettables, are devices that are used to protect sensitive electrical components such as integrated circuits (ICs) from being damaged due to current overloads or short circuits. PTC resettables limit the amount of current that can flow through a circuit to a certain threshold and then immediately shut off the power once the limit is exceeded. This provides protection for sensitive components in the circuit while also allowing the user to easily restore normal operation once the fault has been eliminated.

MF-RHT400-2 Application Field and Working Principle

The MF-RHT400-2 is an ultra-low protection device that is specifically designed to offer superior protection for sensitive components such as ICs. This device features a breakable film that breaks down when the current exceeds the pre-set limit. This triggers the device to shut off the power to the circuit. Once the fault is cleared, the breakable film is replaced and the device is ready to protect again.

The MF-RHT400-2 is designed to provide reliable over-current protection for low voltage and low frequency electronic circuits. This device is utilized in a variety of applications, such as computer peripheral equipment, consumer electronics, lighting systems, and security systems. It is also used to protect delicate electronic components from damage that can be caused by high currents.

The protection device is based on a patented thermal switch technology. The thermal switch technology works by measuring the temperature of the device during normal and excess current operation. When normal current levels are present, the temperature remains low and the switch remains off. When excess current levels are present, the temperature of the device increases rapidly and the switch is triggered, resulting in an immediate shut off of the excess current.

The MF-RHT400-2 boasts a wide operational temperature range of -40 to +125° C, a low contact resistance of 0.25 Ω, and a high current rating of up to 5A. This makes it ideal for protecting low voltage and low frequency circuits from faults and power surges. The device is also UL94V-0 and TUV certified, which is further testament to its reliable performance and safety.

Overall, the MF-RHT400-2 is an excellent choice for providing reliable over-current protection for low voltage/frequency electronic circuits. It is designed to meet the highest safety standards, so users can rest assured that their sensitive components are adequately protected from high currents and power surges.

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