You can save groupings of components, wires, ladders, and other entities as circuits. Like blocks, saved circuits are inserted as a single object. Saved circuits save time when your projects require common arrangements of components, such as motor starters or control circuits.
When you use any of the AutoCAD Electrical toolset Insert Circuit commands to insert a circuit, the circuit explodes. Wire numbers and component tags are updated according to the tag settings of the current drawing. However, fixed tags are not updated.