EL3100 Series

Ground-Fault and Phase-Voltage Indicator

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The EL3100 is a self-powered ground-fault and phasevoltage indication system for 3-phase systems. The EL3100 meets the National Electrical Code (NEC) and the Canadian Electrical Code (CEC) requirements for ground detectors for ungrounded alternating-current systems. Voltage connections are provided on the EL3100 for 208, 240, 480, and 600-V systems. Three green LED’s on the EL3100 indicate the presence of phase-to-ground voltage and one red LED indicates a ground fault. The EL3100 can operate stand-alone or with up to five remote LED indicators. A solid-state relay output provides indication of a ground fault. The output relay is closed when the 3-phase neutral voltage shifts as the result of ground leakage.

Features & Benefits

  • NEC® and CEC Code compliant

    Meets National Electrical Code (NEC®) Article 250.21 and Canadian Electrical Code Part 1, Section 10-106 (2) requirements for ungrounded systems
  • Low-voltage remote LEDs

    System voltage is not present at the remote LED location
  • Phase-voltage indication

    Indicates the presence of voltage on both grounded and ungrounded systems
  • Output relay

    Allows for remote ground-fault indication

EL3100 Datasheet

EL3100 Manual


  • Input Voltage: Input L: 208/240 Vac Input H: 480/600 Vac
  • Dimensions: H 87.0 mm (3.43”) W 112.5 mm (4.43”) D 56.0 mm (2.2”)
  • Approvals: CSA certified, UL Listed (E340889)
  • Conformally Coated: Standard feature
  • Warranty: 5 years
  • Mounting: DIN, Surface

Ordering Information

DIN, Surface





Remote LEDs
High-intensity 16-mm IP67 LED lamps available in red and green colors.