• High tenstion point contacts
• "Reversed loop design"
• Self-cleaning and self-adjusting contacts
• Low contact resistance
• Minimal maintenance
• Earthing switch can be mounted both sides
• Corrosion-free and maintenance-free bearings
  

72,5 - 420kV / 1250 - 3150 A

The HCB disconnector has a flexible and modular design.  The construction, based on earlier designs, fulfills requirements for the most exposed conditions, and has shown its durability through many years of maintenance-free operation.  The HCB is tested according to IEC standards.  The disconnector has high tension point contacts.  The movement of the switch effectively clears the contacts of any ice and corrosion coating.

The framework is made from hot galvanised square profiles.  The bearing for the rotating isolator column is maintenance-free and consists of a stainless steel shaft with a Tufcot radial bearing.  Tufcot is a laminated, polyester based, low friction, material with Teflon.

The disconnector is supplied according to international standards.  Conducting parts are produced from high-grade aluminium alloys.

The contacts are made from silver-plated copper (Reversed loop design). A high and stable contact pressure is ensured through the use of springy contacts.