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RTS-30 Series automatic transfer switches feature preloaded springs and an over-center mechanism driven by an electric operator for opening and closing the power contacts. During an open-transition transfer, the contact mechanism is securely locked in position until the over-center position is reached. The preloaded springs then instantaneously open the closed contacts and instantaneously close the open contacts with a momentary break in between. The quick-break feature provides for rapid full arc interruption, under maximum voltage and amperage, reducing contact erosion and increasing useful life.
