RHEF100-2

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

PTC Resettable Fuses, such as the RHEF100-2, are over-current protection devices that open when an electric current that exceeds its rated value flows and, other than in rare instances of extreme over-current, maintain an open status until reset. They are designed primarily to act as a failsafe for products that could be damaged by an internal or external overload condition, such as a power tool, laptop computer, or other low-voltage, low-current consumer devices. The RHEF100-2 is a polymeric Positive Temperature Coefficient (PTC) resettable fuse that is rated for currents of up to 80 amps. It has a resistance that increases in proportion to temperature, allowing it to be reset when the temperature drops from its activated value to its unactivated value.

When used for over-current protection, it is important that the RHEF100-2 is sized correctly for the application. As the current increases, its resistance increases proportionally, and when the current reaches its rated value, the resistance rapidly increases, causing it to ‘trip’ and open the circuit. When the current drops to a lower level the resistance returns to its nominal value and the device will reset itself when the temperature does as well. The device should be wired in series with the load to be protected and used in a circuit configuration that allows for short-circuit and overload protection.

The other main application of the RHEF100-2 is for static resettable protection for on-board printed circuit boards (PCBs), where it can act as an extra layer of protection against over-voltages and excess currents. It is often used in conjunction with thermal fuses as an additional element of protection for sensitive components such as inverters, motor controllers and energy storage systems. When used in this type of application, it is important to consider the current rating of the device, the rated temperature, and the amount of time required for reset. It is also important to consider that the device may require protection from interference, such as EMC, RFI and transient voltages.

In conclusion, the RHEF100-2 is a polymeric PTC resettable fuse that is designed for over-current protection and static resettable protection for on-board PCBs. It is important to consider the current rating, the rated temperature, the amount of time required for reset, and any potential interference when using the device in an application. By using the appropriate sizing and configuration of the device, and ensuring it is used in an environment that allows for easy resetting, it can provide reliable protection from overload and over-voltage conditions.

The specific data is subject to PDF, and the above content is for reference