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High energy switching involves different configurations because of the need for larger contacts and wider gaps due to increased contact erosion. The higher the switched current, the hotter the arc and the greater the erosion; larger contacts and wider gaps will address this situation. As switch contacts separate, the arc extinguishes when the voltage passes through zero. Because high energy switching usually mandates double break circuitry, heavier springs may assist with actuating with the appropriate contact force.
PTM Published on: 2011-11-01
