Auxiliary switches are used to indicate the position of the main contacts- open or closed, as well as indicator lights, relays, and other accessories. The switches feature self-cleaning contacts. Each time the switch is operated, arc dust and other contaminants are removed. Additionally, this technology provides high resistance to vibrations and mechanical shocks. Many aspects of the switches can be customized by the user, such as, duty rating (standard or heavy duty), number of switches/layers, and contact type/shape.