Rotary switches are electromechanical switches that operate by rotating a central shaft or spindle to select between multiple electrical circuits or positions. They are commonly used in control panels, audio equipment, and instrumentation systems where users need to switch between different settings or modes. Rotary switches come in various configurations, including single-pole, multi-pole, and multi-position options, offering versatility in design and functionality. They provide reliable operation, precise selection, and robust construction, making them suitable for demanding applications in the electronics industry.