The chapter considers a power supply network as a source of high voltage short-term voltage surges with amplitudes of up to several kV. A critical review of traditional means of surges reduction is carried out, and it is shown that a widespread method is the use of two-terminal devices with a nonlinear voltage-current characteristic. The paper also considers and analyzes shortcomings of these devices. It is shown that it is necessary to include a low-pass filter (LFF) between the amplitude limiter of the mentioned surge and the mains input of the equipment. A theoretical analysis of the surge voltage passage through the path “voltage limiter—LPF” was carried out using the Duhamel integral method. The results of the analysis showed that such an LPF reduces the residual voltage surge by tens times. A combined surge protection scheme for equipment is proposed for practically important situations when the surge source has low internal impedance at high frequencies. It is shown that such a scheme reduces the amplitude of the residual surge by 40 or more times compared to a single varistor or suppressor.