Surge arresters

Metallized and non-metallized surge arrester ceramics for ultra-high vacuum-tight ceramic-to-metal joints.

Design guidelines

CeramTec manufactures ceramic tubes for surge arresters using two manufacturing processes - dry pressing and extrusion.

The table below shows the technically appropriate sizes and tolerances:


* Tighter tolerances can be achieved if required, through an additional machining process.

Layer thickness of the metallization

The ceramic is metallized with a tungsten layer and overplated with nickel to achieve good wetting properties for the brazing process.