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Switchgear 2026-05-10 8 min readBy Ziyao Engineering Team

Switchgear Selection Guide

MV/LV switchgear selection: KYN28, KYN61, GCS, GGD series comparison and IEC 62271/IEC 61439 standards.

Switchgear Selection Guide

Switchgear selection depends on voltage level, current rating, breaking capacity, and installation environment.

Common Series

  • KYN28: 12kV metal-clad, 630-3150A, 25-40kA
  • KYN61: 40.5kV metal-clad, up to 3150A, 31.5kA
  • GCS: LV withdrawable, 690V 3200A, 80kA
  • GGD: LV fixed panel, 630-3150A, 30-50kA

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