Electric rotary cam changeover switch in the LW28 20, LW26 20, YMW26 series. It offers 2/3/4 position operation and 8 terminals for versatile wiring. Screws are included for easy installation. The device is suitable for various electrical applications and provides reliable changeover in control circuits. Rated 660V 20A with position sequence 0 1 2 3. Key benefits - Flexible configuration with 2/3/4 positions - 8 terminals enable multiple wiring options - Includes mounting screws for straightforward installation - 660V 20A rating supports standard control and power circuits - Predictable operation with position sequence 0 1 2 3 Use scenarios - Switching between power sources in a control panel (main and backup supply) - Selecting operation modes or routes in automation equipment - Routing measurement or test signals on a development bench Compatibility and series - Fits LW28 20, LW26 20, YMW26 series This description stays true to the original specifications while presenting clear, customer friendly information.