% DL9MJ 2025:
\begin{circuitikz}
    \draw (0,0)
        to [thRp, name={ptc}] ++(2,0)
        to [open] ++(1,0)
        to [thRn, name={ntc}] ++(2,0);
    \draw(ptc.south) node[anchor=north]{PTC};
    \draw(ntc.south) node[anchor=north]{NTC};
\end{circuitikz}