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DC circuit breakers for traction substations – EN/IEC standards

With an extremely wide range of configurations and optional features, Sécheron UR-type DC HSCBs ensure the electrical safety of the equipment powering the overhead lines and third rails of DC mass transit (metro, Light Rail Vehicles, tramways, EMU trains) and DC railway systems.

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Product environment

Sécheron is the railway industry’s global partner for electrical safety solutions for DC traction power substations, bringing decades of experience serving the rail industry. Traction power substation manufacturers and operators have come to rely on our experts for personalized support throughout all phases of their DC traction power substation projects, from recommending the most appropriate solution to obtaining localafter-sales service worldwide throughout the lifetime of their products.

 

Our UR-type DC HSCBs come in a wide range of configurations to suit virtually all operational requirements and can be integrated into DC switchgear or metal-clad enclosures configured for line feeder panels, rectifier breaker panels, and interconnecting breaker panels, for example.

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Main benefits

A wide range of configurations and options
Low maintenance
Long service record
Standard products and custom solutions
Low Total Cost of Ownership (TCO)
Expert customer support
Extensive factory reliability testing
Proven designs accepted worldwide
Worldwide after-sales service
Technical Data
  • Bi-directional or uni-directional, with trip free direct acting device.
  • Rated Voltage 900 VDC, 1800 VDC, 3600 VDC.
  • Current range from 1000 A to 8000 A.
  • Making & breaking capacity matching operational needs.
  • Electromagnetic closing.
  • Control voltage from 24 to 220 VDC or rectified 230 VAC.
  • Auxiliary contacts for main contact position indication.
  • High insulation level – OV4.
  • Ambient temperature – 25 °C to +40 °C.
  • Reference standards: EN 50123-2; IEC 61992-2;
  • Insulation material according to EN 45545-2.

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