High Voltage AC

Changeover switches 7.2kV to 40.5kV

Change-over Disconnectors HUVS Range 12kV (630 to 6300Amp)

For more than 100 years, Mersen has been providing the market with safe, reliable and longer life time off-load disconnectors. These devices offer high performances and robustness for heavy duty requirements with very limited maintenance. Mersen offers one of the largest product ranges on the market and is the global leader. Mersen has a switch solution that will meet your unique needs. Our standard HUVS Change-over High Switches are rigorously engineered to meet your technical specifications. Operation : They can be operated manually, with a pneumatic piston or with an adapted motor (see list) up to 50.000 cycles thanks to fixed cast copper connections. Phase to Phase distance, Signaling, Terminal Box or Locking system can be studied and customized. Small making or braking capacity (on request) Maximum frequency up to 175Hz Indoor in a currentless state Ambient air should not exceed +40°C (otherwise please consult) Altitude should not exceed 1000 m Relative humidity should not exceed 95% List 2 following IEC 62271-1



  • No Load Operation
  • Indoor Type - Horizontal axis mounting (Vertical under study)
  • Configuration with 1, 2, 3 poles (more on request)
  • Mechanical endurance : 25.000 less or egual than 1kAmp and 50.000 cycles above 1kAmp (1 cycle = open + close) thanks to its fixed cast copper contacts
  • Maximum temperature withstand at 130°C without damage to the switch
  • Electrical contact by contact blades with pressed-on Hard Silver Contact Rivets and silver-plated
  • Supporting insulators made of cast epoxy resin (fire classification according to UL94-V1)
  • Large isolation air and creepage path
  • Self-cleaning blade contacts
  • True opening and visible distance
  • Rugged anti-torsion construction
  • Full customisation with :
  • - Manual (handle or gear box), motor, pneumatic drives operation
  • - Quantity of Auxilary switches, safety blocking magnet, locking devices
  • - Dimensions of the disconnector and Fittings/connexions to the busbar
  • Installation of the disconnector can be done on the floor, on the wall and at the ceiling as long as the operation axis must stays horizontal


  • Size per Standard HUVS 630A to 6300A (higher ratings on request)
  • Speed / Characteristic Around 1 sec with pneumatic operation 3 to 4 seconds with motor operation (depend on the rating)
  • Number of Poles 1
    3 or more under study
  • Standards According to IEC 62271-102
  • Application Power Conversion, Power Generation, Power Transport (Oil&Gaz turbine, Hydro plants, braking, night pump storage, ...)
  • ROHS Compliant Consult Technical Services
  • Lead Free Consult Technical Services
  • CE conformity Yes


  • HUVS103P1000A12KV
  • HUVS103P1600A12KV
  • HUVS103P2000A12KV
  • HUVS103P3150A12KV
  • HUVS103P4000A12KV
  • HUVS103P6300A12KV
  • HUVS103P630A12KV


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