MF-R800-0-003

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PTC Resettable Fuses are safety devices used to protect equipment from power overloads, short circuits, leakage current and other faults. They monitor the current in a circuit and, when a preset threshold is exceeded, they provide a thermal cutoff in order to protect the equipment against overloading. The MF-R800-0-003 is a PTC resettable fuse that is specifically designed to operate at a low temperature, which allows it to withstand higher currents without risk of melting, compared to conventional fuses.

The MF-R800-0-003 can be used in applications that require higher current overload protection, such as power supplies, motor control, power amplifiers, LED drivers and more. It can be used in both AC and DC circuits. In addition to its low-temperature operation, the MF-R800-0-003 also offers good surge and reverse current protection, as well as over-current protection. It has a rated voltage of 32V DC, a rated current of 10A and a breaking capacity of 100A.

The MF-R800-0-003 is a self-resetting device, meaning that it will reset itself after a power surge. This eliminates the need for manual intervention in order to reset the fuse, making it an ideal choice for applications where unattended and long term operation is required. Moreover, the fuse is hermetically sealed and is designed for both indoor and outdoor use.

The working principle of the MF-R800-0-003 is based on the use of a PTC element, which is made up of a conductive plastic material that increases its resistance when the current reaching it exceeds its maximum rated current. When this happens, the element heats up and starts to limit the current until it reaches the preset limit, which then trips the fuse. The element will then slowly cool down until it reaches a low enough temperature to reset itself and the circuit is restored.

Overall, the MF-R800-0-003 offers a convenient solution for protection against current overloads and short circuits, while eliminating the need for manual resetting. It is designed for low temperature operation, making it ideal for applications that require higher current overload protection, such as power supplies, motor control, and LED drivers. Furthermore, the hermetically sealed design allows it to be used in both indoor and outdoor environments.

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