Swap/Update Block is available from the Schematic ribbon > Edit Components panel > Swap/Update Block

If you have your own library of symbols with attributes, these need to be converted to AutoCAD Electrical symbols before you can perform a Block Replacement Each row of this spreadsheet is a mapping record for an old name to a new name swap. Maps existing specific or wild-carded block names to the new AutoCAD Electrical block to use during the block instance swap. General mapping of old attribute names to new attribute names so that the old values on the blocks can be copied to the swapped AutoCAD Electrical-smart block. The sheets must be in order, where sheet 1 defines the attribute mapping and sheet 2 defines the block mapping. Each section is a sheet within the spreadsheet and must follow a defined column format. The mapping spreadsheet has two parts: Attribute mapping defaults and Block name mapping. It automatically continues to the next drawing if project-wide mode is selected. This process continues across the drawing, and terminates when no more block names remain. The spreadsheet is checked to copy the old attribute values to the appropriate new names on the newly inserted block. Each new block drawing is pulled from the AutoCAD Electrical symbol library and inserted (scaled and rotated as required) in the drawing. The spreadsheet performs a lookup for each block name and finds the corresponding new block.

You can perform drawing-wide or project-wide block replacements using a user-defined Microsoft Excel spreadsheet and an AutoCAD Electrical-aware symbol library that it references. Block Replacement is available from the Conversion ribbon > Tools panel > Block Replacement

Autocad electrical 2016 moeller library