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Current Guard 3 & Current Guard Plus 3

The powerful Current Guard 3 and Current Guard Plus 3 help protect against utility power anomalies and lightning-induced transient surge events. Their compact and advanced design features thermally protected MOVs to eliminate overvoltage, safeguarding your equipment and capital investments.

Key benefits

  • Safeguard your capital investments - Help reduce operational downtime and maintenance costs
  • Absolute protection - CG3 and CGP3 protect sensitive equipment from failure by clamping transient voltage events as close as possible to nominal and redirecting them safely away from connected equipment
  • Enhanced safety - Thermal protection adds an additional level of protection by taking the SPD offline when reaching a certain temperature

Key features

  • Thermally protected MOVs
  • Multiple enclosure options
  • Compact and light-weight design
  • Dry relay contacts report SPD status remotely
  • Mounting kit to allow surface mounted or flush mounted (metal enclosure)
  • Audible and silence alarm indicate SPD status
  • Tri-color LED lights indicate SPDs operational status per phase.
  • Model CGP3 comes standard with surge event counter
  • Current Guard series is available in polycarbonate, powder-coated steel, and stainless-steel enclosure.

Technical specifications

  • 200kAIC short circuit rating for most available voltage configurations
  • Maximum surge current rating 50 kA to 200kA per mode
  • Nominal discharge current rating (I-n) 20kA for most available configurations
  • Operating frequency 47–63Hz (higher, larger caps?)
  • Connection method parallel to the electrical distribution system
  • Modes of protection All Modes (L-N, L-G, N-G, L-L)
  • Type 1 SPD with fault current rating (SCCR) 200kAIC – no upstream over-current protection device (breaker or fuse) required

Standards, certification and classifications

  • UL Listed 1449 5th edition for Type 1 and Type 2 SPD applications
  • Type 1 SPDs meet requirements for UL 96A
  • UL 1283 for Type 2 applications
  • IEEE C62.41.1, .2, C62.45
  • ROHs compliant


  • Model CG3 offers 10-year warranty
  • Model CGP3 offers 15-year warranty


  • Data Centers – uninterrupted power supplies, remote power panels
  • Food and beverage
  • Wastewater treatment plants
  • Motor Control Centers
  • Service Entrance
  • Power Distribution
  • Control Cabinets
  • Lighting Circuits
  • HVAC equipment
  • UL508A control panels


Current Tech CG3 040 Datasheet

Current Tech CG3 060 Datasheet

Current Tech CG3 080 Datasheet

Current Tech CG3 100 Datasheet

Current Tech CG3 125 Datasheet

Current Tech CG3 150 Datasheet

Current Tech CG3 200 Datasheet

Current Tech CGP3 060 Datasheet

Current Tech CGP3 080 Datasheet

Current Tech CGP3 100 Datasheet

Current Tech CGP3 125 Datasheet

Current Tech CGP3 150 Datasheet

Current Tech CGP3 200 Datasheet

CG3 and CGP3 Release notes