IEC 62683-2-2:2025

Overview

IEC 62683-2-2:2025 - Low-voltage switchgear and controlgear - Product data and properties for information exchange - Engineering data - Part 2-2 - specifies Building Information Modelling (BIM) object models for low-voltage switchgear and controlgear assemblies used primarily in the construction phase and for delivering operational asset data. The standard covers assemblies in the scope of the IEC 61439 series (switchboard and distribution assemblies) and defines engineering data and physical/technical service attributes to be registered in the IEC CDD for standardized, interoperable exchange (IFC/ISO 16739 workflows). Excluded are internal built‑in components, machinery safety control systems, detailed electrical/mechanical configuration and logistic information.

Key topics and requirements

• BIM object models and decomposition: Defines object classes for assemblies, their decomposition and building-related aspects to support lifecycle workflows.
• Object attributes and property libraries: Specifies a library of properties (with value lists and units) for assembly objects to ensure consistent semantics and data quality.
• Assembly and unit models: Addresses assembly building information models and busbar trunking unit BIM (busbar trunking systems are under consideration for a future edition).
• Data lifecycle and exchange: Aligns BIM objects with IFC/ISO 16739 exchange formats and the IEC CDD ontology (IEC 61360 / ISO 13584-42), including IRDI identifiers for unambiguous references.
• Creation guidance: Practical guidance on creating BIM objects - electrical family creation, geometry, properties, and connectors - to help implementers produce compliant BIM assets.
• Normative and informative support: Includes terms, normative references, a properties library, and a typical use case annex to illustrate application.

Applications and users

Who benefits:

• Electrical engineers and switchgear manufacturers creating BIM-ready product data
• BIM managers and modelers integrating low-voltage distribution assemblies into building models
• Building owners/operators using BIM for asset management, operation and maintenance
• Construction contractors and prefabrication teams relying on standardized data for coordination and clash detection
• Software vendors, CAE/CAD tool integrators, and database consortia consuming IEC CDD-hosted engineering data

Practical uses:

• Adding standardized switchgear assembly objects to IFC models for clash detection and coordination
• Delivering asset data for operations, maintenance and lifecycle management
• Enabling interoperable exchange between electrical engineering tools and building BIM platforms
• Supporting prefabrication, installation planning and consistency across project phases

Related standards

• IEC 61439 series (low-voltage assemblies)
• IEC 62683-1 (Catalogue data)
• ISO 16739 / IFC (BIM exchange)
• ISO 19650 (BIM information management)
• ISO 12006 / bSDD (data dictionaries)
• ISO 29481 (IDM / information delivery)

Keywords: IEC 62683-2-2:2025, BIM, low-voltage switchgear, controlgear, IEC CDD, IEC 61439, IFC, ISO 16739, engineering data, BIM objects, property library.