In summary, the J10X series are self-protecting charging resistors based on PTC ceramics and are suitable for smoothing capacitors in power supplies. In the event of a short circuit, these components limit the currents to safe operating levels. In fault-free charging, these components act like a fixed ohmic resistor and limit the peak value of the charging current. The typical applications for the J10X series include: industrial power supplies, frequency converters, and universal power supplies in the power range from 500W to 50kW.