Altronix MAXIMAL77FDV 16-Output 24VDC Surveillance Power Supply (220VAC)
Overview
The MAXIMAL77FDV is a centralized 16-output, 24VDC power distribution unit engineered for international and 220VAC commercial security installations. It combines two EFLOW104NB power boards with two ACM8CB access control modules inside a single 26" x 19" x 6.25" enclosure — consolidating power for up to 16 devices without requiring a separate cabinet for each sub-system. If you are deploying cameras, access control readers, or locks on a 220VAC circuit in a facility outside North America or in a building wired to international electrical standards, this is the unit to reach for in the Altronix power line.
Key Features
- 220VAC Input (198–256VAC range): The wide input tolerance — nearly 30V of headroom on either side of nominal — means the unit stays online through the browndown conditions common in many international facilities. You do not need a separate voltage regulator or AVR in front of it.
- 16 Independently PTC-Protected Outputs: Each of the 16 outputs is guarded by a self-resetting PTC (polymeric positive temperature coefficient) overcurrent device. A shorted field device does not trip a fuse or kill adjacent circuits — the affected output self-limits and resets once the fault clears, reducing truck rolls for nuisance outages. See the full surveillance power supply category for comparison units.
- 9.6A Total Output at 24VDC: The aggregate 9.6A capacity at 24VDC supports a mixed load of cameras and access control hardware. At 24VDC, a typical IR bullet camera draws 500–900mA; this unit comfortably handles 10–12 such devices with headroom for door controllers and readers sharing the bus.
- 50/60Hz Dual-Frequency Input: Compatible with both 50Hz and 60Hz mains — no frequency-specific SKU required whether the site is in Europe, the Middle East, Latin America, or a North American 220VAC panel.
- 5.4A Input Current Draw: The 5.4A input demand fits inside a standard 10A branch circuit with substantial margin, simplifying panel design on commissioning. Consult your PoE switch planning guide for camera power budgets if mixing powered-over-Ethernet devices with this supply.
- 0°C to 49°C Operating Range: Rated for controlled indoor environments — server rooms, IT closets, and equipment rooms where temperature management is standard practice. This is not an outdoor-rated enclosure.
- 33.9 lb Enclosure (26" x 19" x 6.25"): The steel enclosure is sized for wall-mount installation. At 33.9 lbs populated, two-person installation is standard practice. Plan wall anchor points for at least 75 lbs dynamic load before mounting. Pair with appropriate mounting hardware rated for the enclosure weight.
Integration and Compatibility
The MAXIMAL77FDV integrates the EFLOW104NB and ACM8CB sub-assemblies, making it a natural fit for access control and surveillance hybrid deployments where both camera power and door hardware share a single power source. Verify that individual device current draw sums to no more than 9.6A across all 16 outputs before commissioning. The 24VDC output is standard for most IP cameras, electromagnetic locks, and reader interfaces.
Frequently Asked Questions
Q: What input voltage does the MAXIMAL77FDV require?
A: The MAXIMAL77FDV accepts 220VAC input with an operating range of 198VAC to 256VAC at 50 or 60Hz. It is not compatible with 110–120VAC mains without a step-up transformer.
Q: How many devices can the MAXIMAL77FDV power simultaneously?
A: It provides 16 individually protected 24VDC outputs with a combined capacity of 9.6A. The number of devices depends on each device's current draw — a mix of 10–12 typical IP cameras plus access control hardware is representative.
Q: What happens if one output is overloaded or shorted?
A: Each output is protected by a self-resetting PTC device. An overloaded or shorted output will limit current to that circuit and reset automatically once the fault is removed — other outputs continue operating normally.
Q: Is the MAXIMAL77FDV suitable for outdoor installation?
A: No. The enclosure is rated for 0°C to 49°C operating temperature in controlled indoor environments. It does not carry an outdoor or IP ingress rating.
Q: What sub-assemblies are included in the MAXIMAL77FDV?
A: The MAXIMAL77FDV integrates two EFLOW104NB power boards and two ACM8CB access control modules within its 26" x 19" x 6.25" enclosure.
The MAXIMAL77FDV earns its place in international surveillance and access control projects primarily because of that 198–256VAC input window. Most sites I have seen with unstable 220VAC mains — manufacturing plants in Latin America, older government buildings in the Middle East — sit right in that fluctuation band. The unit absorbs that variance without an external AVR in front of it, which simplifies the panel design considerably.
Technical Highlights:
- 16-Output PTC Protection: Self-resetting overcurrent devices on every output mean a single shorted field device — a pinched cable on a door controller or a failed camera — does not cascade to adjacent circuits. You identify and fix the fault; the output resets itself.
- 9.6A at 24VDC: Enough aggregate capacity for a mixed physical security load. Budget roughly 600–800mA per standard IP camera; that leaves room for door locks (500mA–1A each) and readers on the ACM8CB outputs without approaching the ceiling.
- Dual EFLOW104NB + Dual ACM8CB Architecture: The integrated sub-assembly design means camera power and access control power ship in one enclosure and land on one wall. That matters on sites where rack or wall space is constrained and running two separate cabinets is not practical.
Deployment Considerations:
- The 33.9 lb populated weight is real — pre-drill and anchor the wall mount points before lifting. Two-person install is not optional on most drywall or metal-stud walls without blocking.
- The 0°C to 49°C temperature ceiling is a genuine constraint. Equipment rooms that drift above 49°C during summer or have inconsistent HVAC will need supplemental cooling before this unit goes in.
The MAXIMAL77FDV is the right call for an international campus deployment — a multi-building hospital or university outside North America — where 220VAC infrastructure is fixed, device counts per closet run into double digits, and consolidating camera and access control power into a single managed enclosure reduces both installation time and long-term service complexity.
