IEC/EN 62271-1 — HV switchgear common specifications
Common specifications for high-voltage switchgear and controlgear. Shared baseline for the entire 62271 product family.
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Products — switchgear & transformers
IEC/IEEE 62271, 60076, 61439, 60947, C37, C57, DER/BESS product and listing standards.
IEC/EN 62271-100 — AC circuit-breakers
AC circuit-breaker product standard. Ratings, type tests, operating sequences. Global breaker specification cornerstone.
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IEC/EN 62271-102 — AC disconnectors and earthing switches
Disconnectors and earthing switches product standard. Essential for AIS/GIS bay specifications.
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IEC/EN 62271-103 — Switches for rated voltages above 1 kV up to 52 kV
Load-break / switch standard for MV applications. Ring main unit and compact switchgear components.
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IEC/EN 62271-105 — Alternating current switch-fuse combinations
AC switch-fuse combinations for MV distribution. Common in compact secondary substations.
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IEC/EN 62271-200 — AC metal-enclosed switchgear 1–52 kV
Metal-enclosed MV switchgear. LSC categories, IAC classification, internal arc. Highest demand MV gear standard.
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IEC/EN 62271-201 — Solid-insulation enclosed switchgear
Solid-insulation enclosed switchgear product standard for compact MV designs.
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IEC/EN 62271-202 — High-voltage/low-voltage prefabricated substations
Prefabricated HV/LV substations (packaged/unit substations). Extremely common for commercial and renewable projects.
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IEC/EN 62271-203 — Gas-insulated metal-enclosed switchgear for rated voltages ≥52 kV
GIS product standard. Specification and type testing for gas-insulated switchgear.
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IEC/EN 62271-209 — Cable connections for gas-insulated metal-enclosed switchgear
Cable connections for GIS. Interface standard for HV cable terminations into GIS.
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