Sites offering a free IEC 60947-2 pdf are almost always illegal. Penalties for using counterfeit standards can include fines and legal liability, especially if a certified product fails and causes injury. Moreover, old versions (e.g., the 2003 or 2007 editions) contain obsolete test methods. Always use the latest edition (currently Edition 6.0, published 2021-09, with Amendment 1: 2024).
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The most direct source. Visit the IEC website, search for "60947-2", and purchase a PDF download. Prices typically range from 250 to 400 CHF (Swiss Francs). You receive a watermarked, official copy valid for internal use. Sites offering a free IEC 60947-2 pdf are
Unlike general-purpose breakers found in residential homes (which fall under IEC 60898), IEC 60947-2 covers industrial circuit-breakers. These devices handle higher fault currents, offer adjustable trip settings, and are tested for more rigorous conditions. If you are designing machinery for export to
The standard ensures that a circuit-breaker:
If you are designing machinery for export to Europe, Asia, or other regions that adopt IEC standards, compliance with IEC 60947-2 is mandatory for CE marking in many cases.
Title: Low-voltage switchgear and controlgear – Part 2: Circuit-breakers