The core product standard is EN 62271 for high-voltage switchgear and controlgear, defining insulation levels, short-circuit ratings, temperature rise limits, internal arc classification and type tests. For metal-enclosed switchgear, IEC/EN 62271-200 is particularly relevant. For German DSOs, municipal utilities and industrial users, EN 62271 switchgear has become the backbone of safe, reliable medium-voltage (MV) distribution. Growing renewable infeed, stricter occupational safety rules and grid codes such as VDE-AR-N 4110 are forcing operators to modernise substations. Well‑engineered, standard-compliant switchgear enables selective fault clearing, optimized power flows and seamless integration of distributed generation across 10 kV, 20 kV and 30/36 kV networks in Germany. To make the right technology and investment choices, DSOs and industrial operators benefit. Low-voltage switchgear and controlgear assemblies - Part 1: General rules (IEC 61439-1:2020/COR1:2021); German version EN IEC 61439-1:2021/AC:2022-01 This document replaces DIN EN 61439-1:2012-06; VDE 0660-600-1:2012-06. This document has been corrected by: DIN EN IEC 61439-1 Berichtigung. IEC 61439 establishes comprehensive design rules for low voltage switchgear assemblies up to 1000V AC or 1500V DC, mandating verification of temperature rise limits, short-circuit withstand strength, dielectric properties, and protection against electric shock through testing, calculation, or. This part of IEC 62271 applies to prefabricated metal-enclosed switchgear and controlgear assemblies designed: - for alternating current; - with rated voltages above 1 kV and up to and including 52 kV; - for service frequencies up to and including 60 Hz; - for indoor and outdoor installation; -. This document specifies general definitions, classifications, characteristics and test requirements of enclosures to be used as part of switchgear and controlgear assemblies (for example, in accordance with the product standard in the IEC 61439 series), the rated voltage of which does not exceed 1.
