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Market situation with circuit breakers in Russia

 Market situation with circuit breakers in Russia 

2026-04-15

Real-life applications of circuit breakers in Russia, modernization of electrical grids, operation in extremely cold conditions, industrial, nuclear and military applications, impact on combat operations

1. Main electrical networks: mass replacement of obsolete switches (2025–2026)

1.1 Replacement of old oil circuit breakers with 110 kV SF6 circuit breakers at substations (end 2024 – 2025)

At the Promzona-1 substation in the Leningrad regionRosseti Lenenergocarried out a complete replacement of Soviet oil switches with domestic SF6 switchesVGT-110.
Benefits:

faster shutdown, fire safety, long service life, low noise, no maintenance required.

Result:

The reliability of power supply to settlements and industrial zones of the Gatchina region has been significantly increased.

All-Russian trend:
  • Vacuum circuit breakers 10–35 kV and SF6 circuit breakers 110 kV are becomingstandard equipment.
  • Old oil and low oil circuit breakers must bemandatory replacementas part of the modernization program for 2026–2030.

1.2 Introduction of 750 kV ultra-high-voltage circuit breakers into main networks (successful tests, April 2026)

All-Russian Research Institute of Electrical EngineeringVEIcompleted high-voltage tests of the first domestic 750 kV circuit breaker in dry mode.
Future Application:

use in ultra-high-voltage backbone networks of 750 kV in Moscow, St. Petersburg and the Ural industrial region to increase the stability of power supply to large cities.

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