SL Power – 500W power supply, LU500 is ideal for demanding architectural LED lighting systems


LU500 from SL Power: fits in a 2U chassis

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SL Power Electronics has introduced the LU500, a 500W open-frame AC-DC power supply which is ideal for space-constrained LED and architectural lighting systems that call for high efficiency and a wide input-voltage range.

The units feature a universal mains input range of 90V to 305V AC, and provide a DC output of 12V, 24V or 48V. Housed in a 4” x 7.25” x 2.2” chassis, the LU500’s small footprint allows it to fit comfortably into a 2U chassis.

The power supply offers a 500W output when cooled with a 200 LFM cooling airflow at an ambient temperature of 50°C, a higher power rating than any other product in its class. It also supports active current sharing for parallel operation, enabling users of LU500 units to supply loads of up to 1,000W. Average efficiency is higher than 90%.

The LU500 meets the requirements of the IEC 61000-3-2 Class C standard, and features a power factor of greater than 0.9. It also complies with the CISPR 15 and EN55015 EMC standards.

The power supply also provides full output protection, including over-temperature sensing circuits which shut down the power supply to protect a light fixture in the event of overheating.


  • Three-year warranty
  • 500,000 hours’ MTBF at an operating temperature of 25°C
  • 1.5% total noise in 12V DC unit
  • 1% total noise in 24V and 48V DC units
  • ±5% voltage adjustability from nominal
  • 3,000V AC input-output isolation


  • Architectural lighting
  • Entertainment equipment