Padmount 15kV and 25kV 4000 Series CT Powered VFIs with Single Phase Operating Handles

  • Versatile single-phase trip 4000 Series vacuum fault interrupter provides reliable single phase circuit protection.
  • Single-phase VFIs and accompanying single-phase or three-phase trip relays are powered from internally-mounted current transformers.
  • In case of complete loss of power, the relay can trip the VFI on curve within 10 milliseconds.
  • Optional single-phase visible disconnects in series with 4000 Series VFIs permits customers to leave their 600 Amp cables attached while testing and grounding.

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