RHEF1400

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PTC (Positive Temperature Coefficient) Resettable Fuses, also known as polymeric positive temperature coefficient (PPTC) resettable fuses and multicomponent polymer PTC (MPPTC) fuses, have unique advantages in certain low current, safety conscious, and temperature sensitive applications. The RHEF1400 series is a PPTC device designed to provide a variety of protection benefits for consumer, industrial, and automotive applications. This article explores how these devices work and the areas in which they are best suited for protection.

RHEF1400 devices are designed to operate in a similar manner to a traditional fuse. When the current they are subjected to exceeds predetermined levels, the device will trip and open up, effectively cutting off the current flow. However, unlike traditional fuses, PTC resettable fuses are designed to re-engage and reset after a predetermined cooldown time. This provides a number of benefits over traditional fuses.

For one, PTC resettable fuses are designed to tolerate short current spikes, ensuring that a device will not trip unnecessarily due to momentary changes in current. Also, the RHEF1400 series is designed to automatically reset itself when current levels drop below predetermined thresholds. This ensures that the device is reliable and consistent, providing continuous protection.

The RHEF1400 series is designed primarily for low current applications. The nominal current rating of these devices ranges from 0.45A to 10A, making them better suited for protection in consumer devices, laptop computers, LCD TVs, and other low current applications. The device is also designed to work in temperature ranges from - 55°C to 125°C, significantly greater than the operating temperature range of a traditional fuse.

One of the key features of the RHEF1400 series is its ability to tolerate short current spikes. This means that the device will engage after a sustained period of higher levels of current, allowing for a intermittent high-level load to be applied without risking a permanent trip. This helps protect against potential damages occurring due to momentary changes in current levels.

Another key feature of the RHEF1400 series is its wide operating temperature range. This provides better protection in environments where extreme hot and cold temperatures can cause traditional fuses to exceed their current ratings. Furthermore, the device is designed to reset itself in the event of a trip, providing reliable protection in a wide range of temperatures.

The RHEF1400 series is also designed to be RoHS compliant, meaning that it does not use dangerous chemicals and hazardous materials. This is especially beneficial in safety-sensitive environments, as the device does not contain potentially hazardous materials. Furthermore, the device is designed to be shock and vibration resistant, meaning it can withstand exposure to recurring impacts without damage.

Overall, the RHEF1400 series is designed to provide a wide range of benefits in low current, temperature sensitive, and safety conscious applications. The device is designed to be reset after an overload, protecting against momentary current spikes without the need for manual resetting. The device is also designed to be RoHS compliant, and is shock and vibration resistant, providing reliable protection in the harshest of conditions.

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