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Surge Protection Devices  
SPD Class I

High discharge capacity 


OVR type 1 and type 1+2 are designed to discharge high current surges without any destruction of the installation. This surge protective device is chararcterized by its capacity to withstand impulse current with 10/350 µs wave form which simulate direct impact coming from a natural lightning current. Type 1 and Type 1+2 SPDs are placed at the entrance point of the installation, in the main distribution board for a global protection of this installation.

Main benefits

  • The impulse current of 25kA per pole (10/350 µs wave) satisfies all requirements for overvoltage surge protection
  • The early creation of the electric arc by its electronic ignition device reduces the protection level Up to an optimum value of 2,5kV
  • OVR T1 SPDs contain a dedicated arc chamber for extinguishing the electrical arc following the discharge, they can open short circuits up to 50kA without using back up protection.

Main features

  • limp 25kA and 12.5kA
  • 3 types of follow current (If) 50, 15 and 7kA
  • Spark gap and varistor technology

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