Altronix MAXIMAL33DV 16-Output 12/24VDC Supervised Power Supply for 220VAC
Overview
The Altronix MAXIMAL33DV is a centralized, supervised power distribution unit built for surveillance power supplies deployments running on 220VAC mains — common in international installations, industrial facilities, and campus environments wired to European or Latin American electrical standards. It delivers dual-voltage output (12VDC or 24VDC) across 16 individually PTC-protected outputs, with full Form C supervision for AC fail, low battery, battery presence, and an alarm relay. If you're commissioning a multi-camera or multi-reader installation outside North America's 120VAC grid, this is the chassis to evaluate first in the Altronix power distribution lineup.
Key Features
- Dual 12VDC / 24VDC Output: Option A delivers 12VDC at 5.5A, Option B delivers 24VDC at 5.7A, and Option C splits both simultaneously — so a single chassis can power a mix of 12V cameras and 24V readers without a separate supply for each device type.
- 16 PTC-Protected Outputs at 2.0A Each: Positive Temperature Coefficient protection automatically resets after an overload clears — no blown fuses to swap during a service call. With 16 discrete output circuits, individual device faults don't cascade to neighboring devices on the same supply.
- 220VAC Input, 198–256VAC Range: Designed for international surveillance power grids. The ±28VAC input tolerance handles real-world voltage sag on long commercial runs without nuisance trips. Input current draw is 3A at 660VA — budget your panel breaker accordingly.
- Form C Supervision on Every Critical Parameter: AC fail, low battery, battery presence, and a dedicated alarm relay (Form C, 1A / 28VDC) all present dry contacts you can wire directly to a monitoring panel or access control input. This is what separates a supervised power supply from a dumb distribution block.
- 0.7A Battery Charger + 4×12AH Capacity: The enclosure accepts four 12AH batteries — enough for meaningful UPS runtime on a 16-camera edge site. The 0.7A charge rate is modest; plan for recharge time after a prolonged outage rather than expecting rapid recovery.
- 2A Auxiliary Output: A separate 2A aux rail lets you power a control module, door strike, or secondary device without consuming one of the 16 protected camera outputs.
- Substantial Enclosure — 26″ × 19″ × 6.25″, 43 lbs: This is a wall-mount chassis, not a rack-mount insert. At 43 lbs without batteries, plan your mounting surface and hardware carefully — drywall anchors alone won't hold it. Confirm wall stud spacing against the 26-inch width before ordering.
Integration & Compatibility
The MAXIMAL33DV outputs are compatible with standard 12VDC and 24VDC security devices — cameras, access control readers, door contacts, and ancillary devices — provided total load on each rail stays within the rated current. The Form C relay contacts integrate with most commercial monitoring panels via hardwired input zones. Because this unit runs on 220VAC at 50/60Hz, it is not suitable for direct installation on North American 120VAC branch circuits without a step-up transformer. Verify mains voltage before deployment.
Frequently Asked Questions
Q: Can the MAXIMAL33DV deliver both 12VDC and 24VDC simultaneously?
A: Yes. Option C configuration provides 12VDC at 5.5A and 24VDC at 5.7A concurrently from a single chassis, letting you power mixed-voltage device mixes without a second supply.
Q: What input voltage does the MAXIMAL33DV require?
A: It requires 220VAC (50/60Hz), with an operating range of 198–256VAC. It is not designed for direct connection to 120VAC circuits.
Q: How many batteries does the MAXIMAL33DV support and what size?
A: The enclosure accommodates up to four 12AH batteries for UPS backup. Batteries are not included and must be sourced separately.
Q: What type of output protection does the MAXIMAL33DV use?
A: Each of the 16 outputs is protected by a 2.0A PTC (Positive Temperature Coefficient) resettable device — no fuse replacement needed after a fault clears.
Q: Does the MAXIMAL33DV include supervision contacts for external monitoring?
A: Yes. It provides Form C dry contacts for AC fail, low battery, battery presence, and a separate alarm output relay rated 1A at 28VDC — all can be wired to a monitoring panel or access control system.
The MAXIMAL33DV is one of the few Altronix chassis I'd specify without hesitation for 220VAC-fed international sites — specifically because of the 198–256VAC input tolerance, which absorbs real-world grid sag that would cause narrower-range supplies to drop supervision and trigger false alarms. Sixteen PTC-protected outputs at 2.0A each gives you enough granularity to isolate individual camera or reader circuits without running separate power home-runs from the head-end.
Technical Highlights:
- Dual-Rail Output: Option C simultaneously delivers 12VDC @ 5.5A and 24VDC @ 5.7A — practical for mixed installations where IP cameras run on 12V and door hardware runs on 24V.
- Form C Supervision ×4: AC fail, low battery, battery presence, and alarm relay contacts are all Form C rated to 1A/28VDC, giving your monitoring panel clean contact closures on every meaningful power event.
- 4×12AH Battery Bay: 48AH total backup capacity in a single enclosure is substantial for an edge site — match runtime to your expected outage window and verify the 0.7A charger can recover in your maintenance window.
Deployment Considerations:
- At 43 lbs empty and 26″ wide, this chassis needs a solid mounting surface — confirm structural backing in the wall before installation, and add battery weight (roughly 8–10 lbs per 12AH SLA) when calculating anchor load.
- The 0.7A battery charger is on the slow side; after a full battery discharge, expect 14–17 hours to return to full charge on a 12AH bank — plan maintenance windows accordingly and don't assume rapid recovery after a prolonged outage.
This unit is best suited for international campus perimeter or warehouse installations where 220VAC power is the site standard, device counts are in the 12–16 range, and facility management requires monitored power with dry-contact reporting back to a central alarm system.
