A New Outdoor Air Switch and the Prirnciples Involved in Its Design

The new outdoor air switch strikes a new note in simplicity, as it has only three moving parts. All parts are simple and rugged with stresses kept to safe values for the materials employed. Hinge contacts and live parts with relative motion are protected from rain, dust, corrosion, and ice by a housing having smooth contours to minimize corona losses and radio interference. Critical adjustments and alignments have been eliminated. The sole exposed contact, at the break end, utilizes new materials which can withstand severe overcurrents and years of weathering without damage. Because of these features the new switch offers improved ease of operation and maximum reliability under all conditions.