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Enercon Low Voltage Pilot Light Transformer Relay TR120A

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Enercon self-powered transformer relay features a 2-wire low voltage connection for low voltage lighting systems common in homes built in the 1950s, 1960s and 1970s. These pilot light relays can be used as to power low voltage Enercon switches with or without pilot lights.

The ILC TR relay offers a unique solution for remote control & panel mount control applications. This magnetically held relay maintains position without the presence of power, saving energy. Features unique single moving dual contact design enhancing both endurance and reliability. It is magnetically latched, requiring only a momentary rectified pulse to open or close the contacts.


  • ILC mechanically-latching low voltage relay switch; single moving contact
  • this TR120A relay is the replacement for the non-pilot lighted relay TR120
  • 1.125" wide x 2.5" long x 1.375" high body (1.83" from top to bottom edges)
  • mounts in standard 1/2¨ knockout
  • control switch closure time: 50 milliseconds minimum activation time; 50 to 55 ohm coil resistance; 1A @ 30 VDC/VAC status contacts TR-A versions
  • 120VAC; rated for 20 amps
  • built-in class 2 transformer
  • suitable for controlling all lighting loads
  • 20 amp for ballast, tungsten or general loads
  • 1 Hp @120VAC motor loads
  • ambient operating temperature: 0° to 60° max; for interior spaces
  • operating environment: humidity: 10% to 90% non-condensing; in non-explosive/corrosive atmosphere
  • operates in any position
  • designed to be mounted in standard depth 4'' square junction box 
  • for stationary installations
  • 3-year warranty
  • UL, CUL, FCC listed
  • made in USA
  • SPST maintained contacts
  • clearly marked connection designations
  • wiring diagram and instructions included
  • relay contacts consists of 2 nickel-silver contacts designed for high current loads
  • endurance tested independently to 1,000,000 cycles
  • retrofit relays can be used with existing HV switches and go to the On state upon power-up

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