Iec 61439-6 Pdf May 2026

is the international standard that specifies the definitions, service conditions, construction requirements, technical characteristics, and verification procedures for Busbar Trunking Systems (BTS) – also known as busway or bus duct systems.

| Feature | Edition 1.0 (1998) | Edition 2.0 (2012 + Amd1 2021) | | :--- | :--- | :--- | | | Referenced obsolete IEC 60439-1 | Fully aligned with IEC 61439-1 | | Temperature rise | Fixed limits | Limits now depend on insulation class (Class A, B, or E) | | EMC (Electromagnetic Compatibility) | Not explicitly covered | EMC requirements and testing are mandatory | | Short-circuit testing | Lower dynamic requirements | Higher peak currents per IEC 60947 | | Arc fault protection | No specific guidance | Annex on arc fault containment (DDC) | iec 61439-6 pdf

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