DIN Rail Power Supplies

DIN rail power supplies snap onto a 35 mm DIN rail inside an industrial enclosure or control panel, providing regulated DC for PLCs, sensors, IP cameras, and low-voltage accessories. Their compact form factor and side-by-side mounting make them the standard for control panel builds.

Plan Your Deployment

Output voltage (5, 12, 24, 48 VDC) and continuous current rating
Input range (AC universal or wide-range DC) for global deployments
Efficiency and heat dissipation at full load
Redundancy and parallel operation support
DIN rail footprint and depth for cabinet fit

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What to Look For

Continuous rating, not peak, is the sizing number. High-efficiency units (90%+) reduce cabinet heat load, which matters for UL 508A control panels without forced ventilation. Redundant dual-supply designs with a redundancy module are common in critical industrial control applications where a single failure cannot take the panel offline.

Common Deployment Scenarios

DIN rail supplies are used in process control, factory automation, security control panels, and building automation cabinets. They often sit next to DIN rail Ethernet switches, relays, and terminal blocks in a single cabinet layout.

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Altronix

SKU: D12

Altronix D12 12-Inch Slotted Din Rail

12-inch slotted DIN rail for enclosure component mounting
- 12-inch length fits standard security and control cabinet configurations
- Slotted design allows tool-free attachment of compatible devices
- Industrial-grade construction rated for long-term electrical panel use
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Altronix

SKU: D19

Altronix D19 19 Inch Slotted Din Rail

19-inch slotted DIN rail for standard panel-mount security systems
- 19-inch length fits standard control panel enclosures
- Slotted profile allows flexible positioning of modular components
- DIN-rail standard compatible with relay and distribution modules
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$15.22 $8.99 Save $6.23

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Altronix

SKU: D24

Altronix D24 24-Inch Slotted DIN Rail

24-inch slotted DIN rail for cabinet-mounted control devices
- Accepts industry-standard DIN-mount components with flexible slot positioning
- 24-inch length fits standard 19-inch rack cabinets without custom cutting
- Vertical or horizontal mounting with standard bracket compatibility
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$31.99

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Altronix

SKU: DN200

Altronix DN200 Dual-Output DIN Rail Power Supply

Dual-output DIN rail supply for 24V/56V security systems
- Selectable 24V/8A or 56V/4A output from single compact unit
- Standard DIN rail mount integrates directly into equipment cabinets
- 110-240V AC input supports global security infrastructure deployments
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$766.15 $432.99 Save $333.16

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Altronix

SKU: DPS3

Altronix DPS3 DIN Rail Power Supply 6/12/24VDC

Compact DIN rail supply with 6/12/24VDC output for access control
- Selectable 6, 12, or 24VDC output for flexible auxiliary device powering
- 16–28VAC input range with 0.5A max current at 6VDC configuration
- Single-output DIN rail mount fits standard enclosures with minimal footprint
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$86.59 $48.99 Save $37.60

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Vivotek

SKU: DRL-48V120W1EN

Vivotek DRL-48V120W1EN 48VDC 120W Power Supply

48VDC 120W DIN-rail supply for surveillance & access control systems
- 48VDC at 120W with ±0.5% regulation supports multiple cameras and networked devices
- Wide 90-264VAC input and -30°C to +70°C operating range for global installations
- Overvoltage, overcurrent, and short-circuit protection with 3.0 kVac input isolation
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Vivotek

SKU: DRL-48V240W1EN

Vivotek DRL-48V240W1EN 48VDC 240W Power Supply

48VDC 240W DIN-rail supply for multi-camera IP surveillance systems
- 240W output at 48VDC/5.0A supports multiple IP cameras and networked devices
- Wide input 90-264VAC with 90.5% efficiency and >0.95 power factor
- Operates -30°C to +70°C with overvoltage, overcurrent, and short-circuit protection
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Vivotek

SKU: MDR-10-12

Vivotek MDR-10-12 12VDC 10W Power Supply

12VDC 10W industrial supply for IP surveillance, -20 to +70°C
- Wide input range 85–264 VAC / 120–370 VDC eliminates regional converters
- Auto-recovery hiccup protection against overload and overvoltage faults
- Compact 22.5 × 90 × 100 mm footprint, UL508 & TÜV EN60950-1 certified
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$48.00 $33.99 Save $14.01

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What to Look For When Buying

The decisions that matter most before you spec.

Panel Load Planning & Inrush Protection

DIN supplies must tolerate cold-start inrush from cameras and relay coils without sagging voltage. Verify the supply's surge-hold specification (typically 50–150% for 10ms) against your largest single load. See PoE Budget Planning for guidance on cumulative camera load sizing.

Voltage Regulation & Ripple Tolerance

Industrial sensors, access readers, and NVR circuits are sensitive to voltage sag and noise. Confirm your supply's regulation spec (±5% is typical) and ripple rating (millivolts, not percent). Undersized supplies often fail silently, causing surveillance system failures during peak usage.

Redundancy & Battery Backup Integration

For access control cabinets and camera hubs, consider supplies with built-in battery backup or dual-supply mode. Many Altronix units include charger circuits, allowing you to integrate 12V or 24V backup batteries without external regulators—critical for egress control during power loss.

Environmental Stress & Thermal Management

Enclosed control panels can trap heat; oversized supplies run cooler and last longer. If mounting outdoors or in uncontrolled spaces, specify conformal coating and extended operating range (–25°C to +60°C). Wide-input designs (90–264VAC) absorb utility sag and surges better than narrow-range supplies.

Wire Gauge & Circuit Protection Coordination

Long cable runs to remote sensors or cameras demand thicker wire to avoid voltage drop; calculate wire gauge before selecting supply amperage. Ensure your supply's terminal screw-clamp accepts your wire size (typically 2.5–6mm²). Coordinate breaker sizing: a 5A supply typically needs a 6–8A breaker or fuse upstream.

Certification & Installation Standards

DIN rail supplies must meet EN 61076, EN 60950, or IEC 61010 for safety-critical installations (access control, emergency lighting). Verify UL or CE marking matches your jurisdiction. Installers often skip this step, leading to insurance gaps and standards collapse at multi-site deployments.

Technology Stack

The specs and acronyms that actually affect din rail power supplies performance.

Output Voltage & Regulation

Specified as ±X% band around nominal (e.g., ±5% for 24V = 22.8–25.2V). Tighter regulation (±3%) costs more but required for sensitive comms modules or high-resolution IP cameras. Confirm the spec includes both line load and cold-start transients.

Surge & Inrush Rating

Ability to deliver 150–200% rated current for 10–50ms without shutdown or damage. Critical for relay coils and solenoid strikes that draw 3–5× steady-state amps at turnon. Supplies without explicit surge ratings may latch off unexpectedly.

Thermal & Overload Protection

Internal foldback or current-limit reduces output voltage if load exceeds rating, protecting the supply and downline circuits. Some supplies recover automatically; others require manual reset. Verify behavior matches your failure tolerance.

Input Voltage Range & Hold-Up Time

Wide-input supplies (90–264VAC) tolerate grid sag; narrow-input (200–240VAC) may fail below 180V. Hold-up time (5–50ms) keeps output stable during brief power interruptions—longer is better for accessing backup batteries. Check if your mains is stable (urban grid) or poor (rural/industrial).

Output Isolation & EMI/RFI Filtering

Isolation (opto-coupled or transformer-based) prevents ground loops when cameras span multiple enclosures. RFI filtering (ferrite, capacitors) reduces noise in long cable runs. Network instability often stems from poor power supply filtering.

DIN Rail Mounting & Terminal Compatibility

Supplies mount on 35mm DIN rail via snap or screw clips. Verify terminal type (screw-clamp, plug, tab) and wire-gauge limits. Space consumption (module width in mm) determines how many supplies fit in a standard cabinet—plan rail height carefully.

Typical Deployment Scenarios

Small Retail or Office (4–6 Cameras + Access Reader)

Single 24V/5A DIN supply powers all IP cameras via PoE injection and the door badge reader. Sized for ~60W sustained; includes 10–20ms hold-up to survive brief sags. Supply mounted in lobby cabinet above the NVR.

Multi-Floor Building (15–25 Cameras + HVAC Sensors)

Dual redundant 24V/10A supplies in main MDF, each handling half the load. Automatic switchover if one fails. Backup battery charger circuits integrate 20Ah sealed-lead-acid (SLA) for 4–6 hours camera runtime. Reduces single-point-of-failure risk in critical access.

Industrial / Outdoor Yard (8–12 High-Power Cameras + IP Intercoms)

Oversized 24V/20A industrial-rated supply with wide-temperature range and conformal coating. Feeds multiple sub-panels via twisted-pair cable; each sub-panel has local 5A supply for camera clusters. Topology isolates noise from noisy motor circuits.

School Campus (30+ Cameras Across 3–4 Buildings)

Central supply room with modular redundant supplies: 2× 24V/30A + 1× 12V/10A (for legacy analog backup or badge readers). Battery backup sized for 8+ hours. Distributed PoE injectors at each building entrance reduce cable runs. See School Surveillance Design Guide for full topology.

Frequently Asked Questions

What's the difference between a DIN rail supply and a wall-mount power adapter?

DIN supplies bolt directly to a 35mm rail inside a control panel, saving panel space and offering better thermal dissipation in enclosed cabinets. Wall-mount adapters are external, generate more heat in tight spaces, and require external fusing. For any professional installation with a control panel, DIN is the standard and more reliable.

How do I size a DIN supply for my camera cluster?

List each device and its max current draw (in the datasheet). Sum the steady-state currents, then add 20% headroom for inrush peaks. For example, 6 cameras at 0.8A each = 4.8A + 20% = ~6A supply. Always verify the supply's surge rating can handle the largest single device (e.g., a door strike at 2× steady-state).

Can I use a single DIN supply for both 24V and 12V devices?

Only if you choose a multi-output supply with isolated channels—one for 24V and one for 12V. Single-output supplies provide only one voltage. Running a 12V device on 24V may damage it; dropping 24V to 12V with a separate regulator wastes power and generates heat.

What does 'hold-up time' mean and why does it matter?

Hold-up time is how long the supply maintains output voltage after mains fails (typically 5–50ms). If a brief power sag drops mains below the supply's minimum input, hold-up time lets backup batteries or UPS systems engage before cameras/readers drop. Longer hold-up (20ms+) is better for systems with slow battery switchover.

My DIN supply keeps shutting down under load. What's wrong?

Most likely causes: (1) supply is undersized for your peak load (especially inrush from solenoids); (2) input voltage is too low, triggering the under-voltage shutoff; (3) output is shorted or overloaded. Verify mains voltage at the supply's terminals, confirm load current with a clamp meter, and consider a larger supply with higher surge tolerance.

Which brands are recommended for access control and surveillance?

Professional integrators rely on Altronix for their extensive DIN rail line, integrated battery chargers, and proven reliability in access control deployments. Vivotek also offers rugged industrial supplies for camera-heavy sites. Always confirm the supply meets your cabinet's voltage and current spec plus any redundancy or backup requirements.

DIN Rail Power Supplies

Plan Your Deployment

What to Look For

Common Deployment Scenarios

Showing Results for DIN Rail Power Supplies

Altronix D12 12-Inch Slotted Din Rail

Altronix D19 19 Inch Slotted Din Rail

Altronix D24 24-Inch Slotted DIN Rail

Altronix DN200 Dual-Output DIN Rail Power Supply

Altronix DPS3 DIN Rail Power Supply 6/12/24VDC

Vivotek DRL-48V120W1EN 48VDC 120W Power Supply

Vivotek DRL-48V240W1EN 48VDC 240W Power Supply

Vivotek MDR-10-12 12VDC 10W Power Supply

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What to Look For When Buying

Technology Stack

Typical Deployment Scenarios

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