Overvoltage protection device with varistors

An overvoltage protection device with varistors, wherein a first varistor and a second varistor are connected in series, wherein the first varistor has a thermal disconnector, wherein the first varistor has a lower operating voltage than the second varistor, and wherein the first varistor has a lower energy absorption capacity than the second varistor, with the first varistor heating up more in the event of an overload and thereby causing the thermal disconnector to disconnect, wherein the operating voltage of the first varistor is less than or equal to ¼ of the operating voltage of the second varistor, wherein the first varistor has a first type of ceramic, wherein the second varistor has a type of ceramic that differs from the first type of ceramic, wherein the first varistor has a first ceramic layer thickness, wherein the second varistor has a second ceramic layer thickness that differs from the first ceramic layer thickness, wherein the second varistor is associated with a cooling device, wherein the first varistor has a first ceramic layer surface area, wherein the second varistor has a second ceramic layer surface area that differs from the first ceramic layer surface area, wherein the first varistor has a first contact element in the vicinity of the disconnector, with the first contact element being provided such that, in the region below the separation point, the first contact element has no direct electrical contact with the first varistor, wherein a tap is provided on the series circuit between the first varistor and the second varistor, and wherein the overvoltage protection device further comprises a housing.