Contact or electrode device for electrical switch has contact base with contact fingers enclosed by control part with sacrificial anode

摘要

The contact or electrode device has a contact base (4) with projecting contact fingers (3) and a hood-shaped control part (1) with a sacrificial anode (2) in the form of a wolfram-copper alloy ring. The control part can be provided with a number of ventilation slits (5), corresponding in number to the contact fingers, each ventilation slit positioned between 2 contact fingers.