Technology partner: V474 Altronix Corporation
SKU AL400ULB-474
AL400ULB power supply/charger converts a 28VAC input into a single 12VDC or 24VDC Class 2 Rated power limited output.


  • 12VDC or 24VDC selectable output.
  • 28VAC/175VA input.
  • 4 amp @ 12VDC or 3 amp @ 24VDC of continuous supply current output.
  • AC fail supervision (form ''C'' contact rated @ 1 amp 28VDC).
  • AC input and DC output LED indicators.
  • Built-in charger for sealed lead acid or gel type battery backup.
  • Class 2 Rated Power limited output.
  • Filtered and electronically regulated outputs.
  • Maximum charge current .6 amp.
  • Short circuit and thermal overload protection.
  • Zero voltage drop upon transfer to battery backup.