Patent ID: 8009402

Claim:
A surge arrester having: at least one varistor block; two end fittings which are arranged on opposite sides of the varistor block; at least one reinforcing element, which holds the varistor block and the end fittings together and runs through a first hole through at least one of the end fittings; an outer housing composed of silicone which is formed by casting or spraying around the varistor block, the reinforcing element and parts of the end fittings; and a second through-hole formed in the at least one end fitting and open in a groove on that side of the end fitting which faces away from the varistor block, with the groove extending from the second through-hole to the first through-hole, and with the second through-hole, the groove and the first through-hole being sealed with silicone on that side of the end fitting which faces away from the varistor block.