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Power Supplies

Power supplies provide stable and regulated power for surveillance cameras, access control devices, and intercom systems. Selecting the proper voltage, amperage, and redundancy configuration ensures reliable operation and minimizes system downtime in commercial environments.

Plan Your Deployment

Voltage and amperage requirements for connected devices
Centralized vs distributed power architecture
Redundancy and failover considerations
Indoor vs outdoor installation requirements
Code compliance and surge protection planning

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Altronix

SKU: MAXIMAL11E

Altronix MAXIMAL11E Dual 12/24VDC 3.5A Power Supply

Dual-channel 12/24VDC supply, 3.5A per output, 115VAC input
- Independent regulated channels switch between 12VDC or 24VDC per output
- 3.5A per channel supports dual-voltage camera and access control loads
- BC800 DIN-rail mount with built-in protection circuitry for security panels
$1,167.34 $752.99 Save $414.35

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Altronix

SKU: MAXIMAL11FE

Altronix MAXIMAL11FE Dual-Output Power Supply 12/24VDC

Dual 12/24VDC outputs in one DIN-rail chassis for mixed-voltage systems
- Independent 12VDC and 24VDC rails at 3.5A each, 12A aggregate capacity
- 115VAC input in compact BC800 enclosure; field-expandable architecture
- LinQ2-ready supervision; battery backup and FAI certification included
$1,315.38 $847.99 Save $467.39

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Altronix

SKU: MAXIMAL11K1

Altronix MAXIMAL11K1 16-Output Fused Power Supply

16-output fused power supply, 12/24VDC selectable for access control
- 16 independently fused outputs isolate each device circuit and prevent cascade failures
- Dual voltage modes: 12VDC@8A or 24VDC@6A to match mixed security device requirements
- DIN rail or wall-mount installation fits standard security equipment racks
$1,451.06 $850.99 Save $600.07

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Altronix

SKU: MAXIMAL13E

Altronix MAXIMAL13E Dual Output 12/24VDC Power Supply

Dual-output 12/24VDC supply with independent voltage per channel
- Selectable 12VDC or 24VDC on each output for mixed-voltage systems
- 3.5A and 6A simultaneous outputs power access control and surveillance gear
- Isolated channels prevent voltage conflicts in DIN rail or wall-mount setups
$1,189.35 $766.99 Save $422.36

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Altronix

SKU: MAXIMAL13EV

Altronix MAXIMAL13EV Dual Output 24VDC Power Supply

Dual 12/24VDC output supply for mixed-voltage security systems
- Independent 12VDC @ 3.5A and 24VDC @ 6A outputs from single 220VAC input
- Integrated dual power supply/changers deliver redundancy for continuous operation
- Supports access control, cameras, and distributed surveillance loads simultaneously
$1,184.11 $766.99 Save $417.12

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Altronix

SKU: MAXIMAL13FE

Altronix MAXIMAL13FE Dual Output 12/24VDC Power Supply

Dual 12/24VDC supply with 6A capacity and battery backup ready
- Independent 12VDC (3.5A) and 24VDC (6A) outputs from single 115VAC input
- Expandable architecture grows without unit replacement or parallel installation
- FAI supervision and LinQ2 compatible for integrated monitoring and diagnostics
$1,324.32 $853.99 Save $470.33

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Altronix

SKU: MAXIMAL33E

Altronix MAXIMAL33E Dual Output 12/24VDC Power Supply

Dual 12/24VDC supply with 6A per output and battery backup
- Simultaneous 12VDC @ 6A and 24VDC @ 6A for mixed-voltage systems
- Integrated battery charger for backup power in security deployments
- BC800 enclosure with expandable architecture for future module growth
$1,211.26 $780.99 Save $430.27

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Altronix

SKU: MAXIMAL33FE

Altronix MAXIMAL33FE Dual Output Power Supply

Dual 12VDC/24VDC supply with 6A per output and battery backup support
- Independent 12VDC and 24VDC outputs at 6A each from single 115VAC input
- BC800 enclosure compatible for modular, expandable security deployments
- LinQ2 ready supervision with integrated battery backup capability
$1,446.06 $847.99 Save $598.07

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Altronix

SKU: MAXIMAL33RDVC14

Altronix MAXIMAL33RDVC14 2 Power Supply/Chargers w/ Access power

Dual 24VDC power supply with integrated charger for access control
- Two independent 24VDC outputs at 12A for concurrent device operation
- Integrated battery charger maintains backup power during AC loss events
- Rack-mount design consolidates power and access control in one unit
$1,500.88 $879.99 Save $620.89

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Altronix

SKU: MAXIMAL35E

Altronix MAXIMAL35E Dual-Output Expandable Power Supply

Dual-output 12/24VDC supply for mixed-voltage security systems
- Independent channels: 12/24VDC @ 6A and 12VDC @ 10A from single input
- BC800 rack-mount enclosure integrates into standard control cabinets
$1,461.78 $856.99 Save $604.79

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Altronix

SKU: MAXIMAL35FE

Altronix MAXIMAL35FE Dual-Output Power Supply/Charger

Dual-output 115VAC supply with 6A and 10A circuits in wall-mount enclosure
- Switchable 12/24VDC primary @ 6A plus independent 12VDC @ 10A secondary
- Integrated battery charger with LinQ2 supervision ready for IP systems
- Modular, expandable design in compact BC800 metal housing for equipment rooms
$1,489.90 $872.99 Save $616.91

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Altronix

SKU: MAXIMAL37E

Altronix MAXIMAL37E Dual-Output Expandable Power Supply

Dual-output 16A expandable supply with 12/24VDC + 24VDC for access control
- Two independent outputs—6A @ 12/24VDC selectable and 10A @ 24VDC—in compact BC800
- Modular design expands without replacing unit; integrated battery charger for backup circuits
- 115VAC input, DIN-rail mount, metal enclosure rated for continuous security system operation
$1,263.49 $814.99 Save $448.50

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Altronix

SKU: MAXIMAL37FE

Altronix MAXIMAL37FE Dual Power Supply 16A

Dual-rail 16A power supply with 12/24VDC + 24VDC for mixed-voltage systems
- Two independent outputs: 6A selectable 12/24VDC and 10A fixed 24VDC rail
- BC800 steel enclosure with EMI shielding for rack or wall-mount installations
- LinQ2-ready supervision and expandable via auxiliary power modules
$1,509.50 $884.99 Save $624.51

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Altronix

SKU: MAXIMAL55D

Altronix MAXIMAL55D 2 Power Supply/Charger with Access power

Dual 12VDC supply with 19A capacity and integrated battery backup for access control
- 16 PTC-protected relay outputs isolate circuits and prevent short-circuit damage
- Dual independent 9.5A supplies deliver 19A total for multi-door lock and strike systems
- Built-in charger maintains battery backup during power loss without external UPS
$1,546.60 $996.99 Save $549.61

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Altronix

SKU: MAXIMAL55E

Altronix MAXIMAL55E 2 Power Supply/Chargers - Eachare 12V

Dual 12VDC redundant power supply, 9.5A per channel for security systems
- Two independent 9.5A outputs enable load balancing across access control and surveillance gear
- 115VAC input with switchable configuration for battery charging and equipment power backup
- Compact dual-channel design fits standard enclosures for continuous uptime in security applications
$1,243.06 $801.99 Save $441.07

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Altronix

SKU: MAXIMAL55FE

Altronix MAXIMAL55FE Dual 12VDC 9.5A Power Supply

Dual 12VDC 9.5A power supply with field-expandable architecture
- Two independent 12VDC outputs at 9.5A each (19A total) from 115VAC
- Field-upgradeable configuration scales without replacing the entire unit
- LinQ2-ready intelligent monitoring for remote supervision and diagnostics
$1,306.54 $842.99 Save $463.55

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What to Look For When Buying

The decisions that matter most before you spec.

Amperage & Load Planning

Size your supply at 120–130% of peak load to avoid thermal shutdown and extend component life. A 24V system with five 5A devices (25A nominal) needs a 32A or 40A supply. Under-sizing is a leading cause of system failure during peak demand.

Redundancy for Life-Safety & Access Control

Single supplies fail without warning. Dual-supply designs or UPS-backed configurations ensure doors unlock and intercoms function during power anomalies. Redundancy is required by code in many jurisdictions for egress and emergency communication.

Voltage Selection & Device Compatibility

Most locks, readers, and access points run 12V or 24V; cameras vary widely. Verify every device's rated voltage before specifying. Mixing 12V and 24V systems in one cabinet requires isolated supplies or regulators to prevent cross-voltage damage.

PoE Power Budget Constraints

Standard PoE (802.3af) supplies 15.4W per port; PoE+ (802.3at) 30W; High Power (802.3bt) up to 95W. A 24-port switch can deliver only ~375W total, easily exhausted by dense camera and access-point deployments. Injectors and midspans extend capacity.

Environmental & Mounting Constraints

Outdoor cabinets and damp enclosures require sealed, conformal-coated supplies rated for temperature extremes (−20 to +70°C typical). DIN-rail mounting saves space; enclosed supplies offer better noise isolation and thermal dissipation in server rooms.

Vendor Selection & Lead Times

Brands like Honeywell, Speco Technologies, and HES dominate access-control power; Pelco and Digi International focus on surveillance and networking. Verify manufacturer support, warranty, and stock availability before design lock-in.

Technology Stack

The specs and acronyms that actually affect power supplies performance.

DC Voltage Regulation & Ripple

Quality supplies hold output within ±5% of rated voltage under load variations and input sags. Ripple (AC noise superimposed on DC output) should be <2% peak-to-peak; excessive ripple causes camera image noise and lock chatter. Look for ±5V, ±12V, ±24V stability specs in datasheets.

Current Rating & Amperage Classes

Expressed in Amps (A) at rated voltage—e.g., 24V/5A, 24V/10A, 24V/40A. Higher amperage doesn't mean faster devices; it determines how many devices can draw simultaneously. Always check individual device current draw in milliamps (mA) and sum peak totals, not averages.

Power Factor & Input Voltage Range

Industrial supplies accept 100–240V AC input (worldwide compatible) and deliver regulated DC output. Power factor >0.9 reduces heating and helps avoid utility surcharges. Check input range to ensure compatibility with generators and unclean site power.

Short-Circuit & Fuse Protection

Integral fusing (fast or slow blow) and electronic current limiting protect the supply and downstream wiring from overcurrent events. Some supplies auto-recover; others latch off and require manual reset. Verify protection mode and response time for your application.

UPS Integration & Holdup Time

Supplies with integral or stackable battery backup maintain output for 5–60 minutes during AC loss, bridging the time for graceful shutdown or backup power activation. Holdup time (hold-up capacitor reserves) is separate; typical range 10–50 ms.

PoE (Power over Ethernet) Standards

802.3af (Type 1) = 15.4W, 802.3at (Type 2/PoE+) = 30W, 802.3bt (Type 3/4, High Power) = 60–95W. Injectors and midspan splitters add PoE to non-PoE switches. Always verify endpoint compliance and total switch/injector budget vs. connected device demand.

Typical Deployment Scenarios

Small Office Access Control (Single Door)

One 12V/5A regulated supply feeds an electric strike lock, RFID reader, and request-to-exit button. Total load ~2A. A simple wall-mount supply with integral fuse handles this; add a surface-mount enclosure in humid areas. Budget: 1 supply, 1 backup fuse kit.

Mid-Size Surveillance Closet (16 IP Cameras + NVR)

A 24V/20A regulated DIN-rail supply powers four 5A PoE injectors (one per four cameras), plus the NVR's 24V auxiliary input. If cameras are all PoE-enabled and the switch is remote, injectors bridge the gap. Add a second supply for redundancy and a UPS battery module for 10-minute hold-up.

Multi-Building Campus with Distributed Access (8 Doors, 24 Cameras)

Each building requires a local 24V/10A supply (for locks, readers, intercoms) plus one or two PoE injectors per camera cluster. Cabinet-mounted DIN-rail supplies with integral breakers minimize field wiring. Specify weatherproof outdoor enclosures for exterior cabinets; trunk all power back to a central UPS for life-safety compliance.

High-Density Server & Intercom Integration

A redundant 24V/40A supply pair feeds six 24V devices (intercoms, door controllers, call stations) and distributes 12V to analog sensors via a buck regulator. Modular or multi-output supplies reduce cable clutter. Proper conduit routing and junction boxing maintain code compliance and thermal management.

Frequently Asked Questions

What size power supply do I need for my system?

Add up the current draw (in milliamps or amps) of every device connected to that supply—cameras, locks, readers, intercoms. Multiply by 1.25 (safety factor) and round up to the next standard supply size (e.g., 5A, 10A, 20A, 40A). Always verify supply and load voltage match exactly.

Can I use one power supply for mixed 12V and 24V devices?

No. Single outputs are isolated; mixing voltages risks damage. Use separate regulated supplies for each voltage, or a multi-output supply with isolated rails. If you must share a cabinet, use a buck converter (24V down to 12V) downstream of a 24V primary supply, but size the primary for total current demand.

What's the difference between a regular power supply and a UPS-backed supply?

A regular regulated supply converts AC to clean DC and stops when AC fails. A UPS-backed supply includes integral or stackable battery modules that maintain DC output for minutes after AC loss, allowing orderly shutdown or switchover to backup power. Essential for access control and emergency intercoms.

Do I need a PoE injector if my switch already has PoE?

Not necessarily, but injectors solve two common problems: (1) extending PoE to non-PoE switches, and (2) supplementing insufficient switch PoE budget. A 24-port PoE+ switch can only deliver ~375W total; dense deployments often need additional injectors per camera cluster. Plan your PoE budget carefully upfront.

What does ±5% voltage regulation mean?

The supply guarantees output stays within ±5% of rated voltage (e.g., 24V ±1.2V = 22.8–25.2V) across load and input variations. Tighter specs (±3%) cost more but reduce noise and improve camera image stability. Cameras typically tolerate ±10%; locks are pickier (±5% or better).

How do I mount a power supply in an outdoor cabinet?

Use a DIN-rail mounted supply inside an IP65-rated enclosure. Ensure the enclosure has ventilation or a thermostat fan to keep internal temperature below the supply's rating (typically 70°C max). Add a surge protector or SPD at the AC input, and run conduit from the cabinet to devices using conduit adapters and gang plates for strain relief.

Power Supplies

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