The mainProductsCircuit-Breakers27.5 kV Vacuum Circuit-BreakersBP27NS


Single-pole circuit-breakers series BP27NS are used as component parts for blocks of complete switchgears series KRP(B)-27,5 in traction substations, switching stations and points of parallel connection of railroad sections contact line as well as for extension of existing substations and replacement of outdated air and oil circuit-breakers at them.


  • Rated voltage (kV): 27.5
  • Rated current (A): 1600
  • Rated breaking capacity (kA): 25
  • Peak withstand current (kA): 64
  • Mechanical lifetime: 30000 CO cycles
  • Electrical lifetime at rated currents: 30000 CO cycles
  • Electrical lifetime at rated breaking currents: 30 O cycles


Circuit-breakers series BP27NS consist of four main parts, namely:

  • a frame housing an electromagnet
  • a cubicle housing control PCBs and a manual switch-off mechanism
  • a supporting frame with four mounting holes
  • a pole consisting of insulating envelopes with organosilicon insulation and a vacuum interrupter

External finning and internal insulation of poles are solid-cast, including the vacuum interrupter casting. The creepage distance of external insulation is increased up to the III pollution level.


Description Product Name Number of Version Файл
Вакуумный выключатель 27,5 кВ ВР27НС Редакция 5 pdf, 2.3 Мб
Description Product Name Файл
Общий каталог продукции Вакуумные выключатели, комплектные распределительные устройства, комплектные трансформаторные подстанции, автоматический пункт секционирования 110 кВ, разъединители pdf, 6.8 Мб
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