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This is a product specification label for a Kohler Automatic Transfer Switch. The device is a three-phase, 480-volt electrical switch manufactured by Kohler Co. in Kohler, Wisconsin, with the part number K-166541-0150 and serial number K32027. The switch is rated for 150 amperes at 60 hertz frequency and is configured with 4 wires and 3 poles, suitable for 12 CS/12 DS applications. The automatic transfer switch is designed to automatically transfer electrical load between two power sources, a standard capability for backup power systems in commercial and industrial applications.