You have two options for saving the symbol: WBlock or Block. WBlock creates the symbol .dwg file while Block creates the symbol for this drawing file only.
Save and insert the symbol onto a drawing
The wire breaks, the component tag inserts, and the wires connect to the symbol.
Note: New symbols you create can also be inserted with the AutoCAD Electrical Insert Component command. You can add your new symbol to the icon menu. Or, you can select it from the Type it or Browse dialog box file selection options in the icon menu.