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MAXIMAL77D Altronix 16 Output PTC Power Supply/Charger w/ Controller and Enclosure 24VDC @ 9.7Amp

  • Sixteen (16) independently controlled Fail-Safe and/or Fail-Secure power outputs.
  • Sixteen (16) auxiliary power outputs (unswitched).
  • Output PTCs are rated @ 2.5A
  • Filtered and electronically regulated outputs.
  • Supervision: AC Fail, Battery Fail and Battery Presence
  • Fire Alarm disconnect (latching or non-latching) is individually selectable for any or all of the sixteen (16) outputs.
  • Alarm output relay indicates that FACP input is triggered.
  • Alarm output relay indicates that FACP input is triggered
  • Fire Alarm disconnect input options: a) Normally open (NO) or normally closed (NC) dry contact input, b) Polarity reversal input from FACP signaling circuit
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Ordering Notes: Dealers Only
MSRP Price: $1,728.00
Online Price: $1,234.00

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Product Details

Maximal Access Power/Controllers distribute and switch power to access control systems and accessories. They convert a 115VAC, 60Hz input into sixteen (16) independently controlled 12VDC or 24VDC Class 2 Rated PTC protected power-limited autoresettable outputs. The outputs are activated by an open collector sink or normally open (NO) dry trigger input from an Access Control System, Keypad, Push Button, REX PIR, etc.



  • Voltage - 115VAC, 60Hz
  • Fusing - Varies, see Reference Chart


  • Sixteen (16) Class 2 Rated PTC Protected Power-limited Outputs (auto-resettable)
  • Voltage - 12VDC or 24VDC, see Reference Chart
  • Current - Varies, see Reference Chart
  • Protection - PTC 2.5A.
  • Auxiliary - 2A (unswitched).
  • Other - Overvoltage protection. Filtered and regulated Outputs.

Back-up Battery (not included)

  • Capacity - 12AH / 12VDC (Up to 4 within enclosure). 40 AH / 65 AH (requires separate enclosure)
  • Type - Sealed lead acid or gel type
  • Fuse Rating - 15A @ 32VDC Maximal33 does not have a battery fuse.
  • Failover - Upon AC loss, instantaneous

Fire Alarm Disconnect

  • Latching or non-latching, individually selectable for any or all of the sixteen (16) outputs.


  • AC Failure - Form C contacts
  • Battery - Form C contacts

Indicators (LED)

  • Input - 115VAC is present
  • DC Output - Powered
  • Battery - Discharged or not connected
  • Relays - Individual LEDs indicate outputs are triggered (relays energized).
  • FACP - Indicates FACP disconnect is triggered

Agency Listings

  • UL - UL294 - Access Control System Units
  • cUL - c22.2 No.205-M1983 - General Signaling Equipment
  • CSFM - California State Fire Marshall Approved.

Physical and Environmental

  • Dimensions (H x W x D) - 26 x 19 x 6.25 (660.4mm x 482.6mm x 158.8mm)
  • Product Weight - 33.4 lbs. (15.2 kg)
  • Shipping Weight - 40.4 lbs. (18.3 kg)
  • Operating Temperature - 0C to 49C (32F to 120F)
  • Storage Temperature - -20C to 70C (-4F to 158F)
  • Relative Humidity - 85% +/- 5%
  • BTU/Hr (approx.) - 24VDC - 238

MAXIMAL77D Specifications PDF


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DWG - 800 Shames Drive , Westbury , NY 11590 , USA - 516-933-4900
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