The Bourns MF-RX Series PTC resettable fuses provide overcurrent protection for sensitive electronic circuits. These fuses are designed to reset automatically after a fault, minimizing downtime and preventing damage to connected components. They are commonly used in security and fire alarm systems, power transformers, and other applications requiring reliable circuit protection. The MF-RX Series is available in various current ratings and packaging options to suit diverse application needs. While not recommended for new designs, the higher voltage rated MF-RX/72 Series is preferred.