This paper reports the variations of varistor voltage, nonlinear exponent, leakage current, and dissipation factor against surge stress of ZnO-P <TEX>$r_{6}$</TEX> <TEX>$O_{11}$</TEX>-CoO-C <TEX>$r_2$</TEX> <TEX>$O_3$</TEX>-E <TEX>$r_2$</TEX> <TEX>$O_3$</TEX>(ZPCCE)-based varistors manufactured with the variations of sintering temperature. It was found that the variations of electrical parameters against surge stressing current of 100 A/<TEX>$\textrm{cm}^2$</TEX>(8x20 <TEX>${\mu}\textrm{s}$</TEX>) is not so large under the surge stress of 700 times. Among varistors, specially the varistor sintered at 134<TEX>$0^{\circ}C$</TEX> exhibited the smallest variations, with %<TEX>$\Delta$</TEX> <TEX>$V_{lmA}$</TEX>=+0.23%, %<TEX>$\Delta$</TEX><TEX>$\alpha$</TEX>=+0.23%, %<TEX>$\Delta$</TEX> <TEX>$I_{L}$</TEX>=0%, %<TEX>$\Delta$</TEX>tan<TEX>$\delta$</TEX>=-6.94%. The clamping voltage ratio( <TEX>$V_{c}$</TEX>/ <TEX>$V_{lmA}$</TEX>) of all varistors was less than 2.2.2.2.2.2.2.