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  • AL175ULB, Altronix Power Supply AL175ULB, Altronix Power Supply

Altronix AL175ULB 8-PTC Outputs Power Supply Board, 12/24VDC

Altronix | SKU: AL175ULB | Model: AL175ULB

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Altronix AL175ULB 8-PTC Outputs Power Supply Board, 12/24VDC
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AL175ULB is a power-limited power supply/charger that converts a 24VAC input into two (2) individual PTC protected 12VDC or 24VDC outputs (see specifications). It is intended for use in applications requiring UL Listing for Access Control (UL294) and applications requiring an interface with Fire Alarm Control Panels.


  • Input 28VAC/56VA.
  • Access control trigger input.


  • 12VDC or 24VDC selectable outputs. 1.75 amp supply current.
  • Two (2) Class 2 Rated power-limited outputs.
  • Fail-Safe/Fail-Secure lock output (switched).
  • Auxiliary power output (unswitched).
  • PTC protected outputs, rated @ 2.5 amp.
  • Filtered and electronically regulated output.
  • Short circuit and thermal overload protection

Battery Backup

  • Built-in charger for sealed lead acid or gel type batteries.
  • Automatic switch over to stand-by battery when AC fails.
  • Maximum charge current 0.4 amp.


  • AC fail supervision (form "C" contacts).
  • Supervised Fire Alarm Disconnect (Latching w/reset or Non-Latching).

Visual Indicators

  • AC input and DC output LED indicators


  • Operating temperature: 0C to 49C ambient
  • 10.75-21.5 BTU/Hr

Additional Information

Product SKU AL175ULB
Brand Altronix
Condition New
Power Supply Type Board
# of Outputs 8
Input Voltage 28 VAC
Output Voltage 12 VDC, 24 VDC
Output Current 1.75 Amp
Features UL Listed
Input Voltage 28VAC
Number of Outputs 2
Output Type DC
Certifications UL
Version Board
Power Options 1.75 amp @ 12VDC, 1.75 amp @ 24VDC
Battery Charging Yes
Fire Alarm Interface Yes
Output Protection PTC
  • (1) Power Supply Board
  • Lifetime Warranty