IEC 60949 is an international standard titled (also known as “Safety of low‑voltage switchgear and controlgear” ). It provides a comprehensive framework for:
Some premium electrical design software (e.g., ETAP, SKM, Caneco BT) licenses IEC 60949 and integrates the calculation method. The standard is not provided as a PDF, but the algorithm is embedded. iec 60949 pdf free top download