Enclosures
Building and Home Automation Solutions

High voltage fuses, medium voltage fuses

Medium voltage fuses (often called high voltage fuses) up to 40.5 kV for indoor and/or outdoor use that provide short circuit protection.

Description

Current-limiting fuses and fuses with controlled blow-out for the protection of distribution transformers, voltage transformers, capacitor banks, motor circuits and installations with other equipment.

Main advantages

  • Capable of controlling the full spectrum of overload currents, either in combination with switchgear or as stand-alone protection
  • Economical protections for immediate interruption of high short-circuit currents which significantly increase the life of the insulation
  • High mechanical and thermal resistance of the housing material

Key features

  • Special construction optimized for different types of applications
  • Two enclosure materials are available; porcelain and fiberglass resin
  • Can be used both indoors and outdoors

Our CEF-S fuses  are made in Sweden and meet specific requirements according to the test standard §17: 
  • In the event of an arc fault, the fuse has a disconnection time of less than 0.1 seconds
  • The disconnection time is adapted to the rated current of the fuse. The rated current of the fuse is 1.1 times greater than the rated current of the transformer according to requirement specifications
  • The fuse can handle at least 8 times the rated current of the transformer when connected
  • Are tested according to IEC 60282-1 and VDE 0670T4 and meet the dimensions of DIN 43625.
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