Ace ACE-H20-1555CP Constant Power LED Driver

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20 Watt 120-277V Emergency Backup LED Driver

The ACE-H20-1555CP from AC Electronics is a UL Listed Emergency LED Driver that enables the same LED fixture to be used for both normal and emergency operation. The ACE-H20- 1555CP contains a LiFePO battery, a high-efficiency battery charger, control circuitry, and high-efficiency power converter circuits, in a single metal enclosure. In the event of a normal power failure, the ACE-H20-1555CP switches to emergencymode and operates the fixture’s LED array or module for 90 minutes at a constant power of 20 W. When normal power returns, the ACE-H20-1555CP returns to normal-mode. The ACEH20-1555CP can be used in switched or unswitched fixture applications. The ACE-H20-1555CP can drive any LED array
or module in emergency-mode with a voltage range of 15-55 Vdc and that can operate at a current range of 363 mA to 1330 mA.

Features, Benefits, and Applications:

  • Constant output power: Maintains constant emergency light levels over the full 90-minute runtime and over the output voltage range.
  • Self-sensing output voltage: Automatically adjusts over the 15-55 V range to maintain constant power within the class 2 voltage range.
  • Includes input over voltage surge protection, output short circuit, open circuit, and over–voltage protection, as well as over-temperature protection for improved reliability.
  • Two-wire universal input: Reduces wiring errors and reduces installation time and complexity.
  • Includes a miniature illuminated test switch status indicator: Enables mounting in small spaces.
  • Suitable for indoor and damp locations.
  • Compatible with a variety of LED fixtures, such as emergency-only fixtures, as well as new and existing fixtures.

Safety and Regulatory Compliance:

  • UL and cUL Listed as an Emergency LED Driver (UL924)
  • UL Listed for both field and factory installation
  • UL & cUL Class 2 output (UL1310 compliant)
  • CEC Title 20 compliant: Certified in CA Title 20 Appliance Efficiency Database – Battery Charger
  • EMI: Complies to FCC commercial limits
  • RoHS compliant




*This product is built to order typically ships in 3 to 5 business days. Larger quantities may take longer than stated lead-time.  All lead-times are estimates and you will be notified by email if it will take longer than 5 business days to ship.

Extra Information

Catalog No:
Driver Type:
Ballast Type:
LED Driver
Light Source:
Max. Power:
20 Watt
Input Voltage:
Output Voltage:
15-55 V
Input Frequency:
50/60 Hz
5 Year
Length (in.):
Width (in.):
Height (in.):
Mounting (in.):
Price Shown:
Per Driver