EPC-A-2-D Emergency Power Control EPC-A-2-D Emergency Power Control

EPC-A-2-D Emergency Power Control

Model: EPC-A-2-D

The EPC-A-2-D saves energy and money while ensuring compliance with both life safety and energy codes. In the past, emergency lights were kept on 24 hours a day to meet life safety codes. Now, you can use a UL 924 listed Emergency Power Control, Model EPC-A-2-D, to convert normal light fixtures into approved emergency lights. During a utility power interruption, the EPC-A-2-D automatically bypasses the normal lighting controls, turning the emergency lights ON at full brightness, regardless of dimmer position.  During normal operation, the same dimmer, occupancy sensor, dimming panel, or lighting control can switch and dim normal and emergency fixtures on and off simultaneously.  The EPC-A-2-D boasts a universal mount design with ears; allowing the device to be nipple, fixture, panel or box mounted. This enables the EPC-A-2-D to adapt to the application requirements.


EPC-A-2-D Emergency Power Control

Wiring Diagrams

R20D Relay and EPC-A-2-D (WD1008)


Electrical Ratings:

  • Sensing voltage:  120-240/277V
  • Load voltage:  120-240/277V
  • Ballast/Driver Load:  16 Amp Electronic Ballast/LED Driver/General Use 5 Amp Magnetic Ballast
  • Incandescent load:  1800W (120V) / 3000W (277V)
  • Normally Closed Output Contact


  • Mounting:  Nipples on 1/2” KO
  • Plenum rating:  Plenum Rated.  Tested to UL2043. UL94-5VA.
  • Shipping weight:  4 oz.
  • Color:  Black
  • Temperature:  0°C - 60°C (32°F - 140°F)
  • Body size (without hub/ears):  2-1/2” x 1-5/8” x 1-3/8”
  • Body size (with hub/ears):  3-5/8” x 1-5/8” x 1-3/8”
  • Fire Alarm Override/Remote Test Switch Input
  • Utility Power Indicator LED
  • Universal Mount Design:  Contractor friendly hub design similar to industry standard power packs for quick and easy installation.
  • Isolated 0-10V Relay Contact:  Ensures full brightness during utility power interruption, regardless of dimmer model.
  • Unique, Patented Automatic Diagnostic:  When the room switch is turned off, the EPC-A-2-D will run a 2.5 seconds self-test routine, verifying that the emergency power source was available and that the EPC-A-2-D, ballast, and lamp(s) are all functioning correctly. This feature eliminates the need for time-consuming and costly manual monthly testing and is approved for this purpose. This also allows the unit to be installed in remote or inaccessible locations, because the unit does not rely on access to its manual test switch. Field selectable via “ATS” slider switch.