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What is a “closed transition” transfer switch?

April 26, 2017Switch transfer

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What is a “closed transition” transfer switch?

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A “closed transition” transfer switch (also known as a “make-before-break” transfer switch) transfers power between the normal and standby sources with no interruption in power to the load. It does this by connecting to both sources in parallel for a fraction of a second. Closed transition transfer switches are used on circuits for which any interruption in power could cause some inconvenience.