RF30-065F is an over-current surge protection device (SPD) manufactured by AUPO. It is a PTC (Positive Temperature Coefficient) polymer-based fuse with a rated current of 650mA and a breaking capacity of up to 30A. The RF30-065F is based on a specially designed core that features both thermally activated and non-thermally activated components to ensure maximum safety. It is suitable for use in a variety of applications, including motor protection, AC/DC power supply, electrical wiring, air conditioning, and other various home appliances. The device has a compact size and is able to be installed in areas with limited space.