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SLP420 AC/DC Power Supplies

The new SLP420 AC-DC power supply is a highly efficient (94%), compact solution with high input-to-output isolation to meet SELV requirements. Available in an open frame 3.0 x 5.0 x 1.5” form factor, the SLP420 provides a nominal 48 VDC regulated output voltage which can be manually adjusted up to 51 VDC.

Key features

  • 90 – 305 VAC universal input voltage range
  • 420 W rated power, 330 W natural convection
  • High efficiency to 94% typical
  • 48 VDC standard output
  • Low in-rush current (<25 A)
  • 48 – 51 VDC adjustable output voltage
  • Active PFC, EN61000-3-2 compliant
    • Class C, >20% load
  • Low earth leakage current
    • <250 μA
  • IEC/EN/UL60950-1 and 62368-1 compliant
  • UL8750 compliant
  • EU directive EU 2015/863 (RoHS 3)


  • Industrial / laser applications
  • 3D printing
  • Automated teller machines
  • Video wall display and SSL lighting
  • Entertainment lighting
  • LED moving heads, spots and strobes
  • Architectural lighting
Model number
Power Out Max (W)
Input Voltage (VAC)
V1 Out Nom (V)
Output Current Max (A)
Power Out Max (W) 420
Input Voltage (VAC) 90 - 305
V1 Out Nom (V) 48
Output Current Max (A) 8.75
Cooling Natural Convection
Max # Outputs
Efficiency Rating (%)
Convection Rating (W)
Operating Altitude (m)
Operating temperature range
-20 to 80 ℃ (start up at -30℃)
UL/IEC/EN 60950-1, UL/IEC/EN 62368-1, UL 8750, CE
Datasheets (PDF)
Datasheet - SLP420

The SLP420 is capable of a steady 330 W of power in free air cooling, and 420 W with forced air cooling. It can operate up to 80ºC with de-rating, and is capable of -30ºC start-up.

The series complies with the IEC/UL60950-1 and 62368-1 standards for Audio/Video and Information Technology equipment, and UL8750 for LED lighting applications. The series meets the EN55032 EMC limits of Class B for conducted emissions, as well as EN55024 for immunity. It complies with IEC/EN61000- 3-3 limits for voltage fluctuations/flicker and IEC/EN61000-3-2 Class C for harmonic content.