BS EN 62683-1:2017 Low-voltage switchgear and controlgear. Product data and properties for information exchange Catalogue data

Data elements
Electrical components
Mechanical components
Classification systems
Data representation
Electrical engineering
Electronic equipment and components
Data
Terminology
Symbols
Electrical equipment
Letters (symbols)

Link: BS EN 62683-1:2017 Low-voltage switchgear and controlgear. Product data and properties for information exchange Catalogue data
Source: BSI Standards