Middle Atlantic DC PWR Dist 45W Compact - PD-DC-45

Middle Atlantic PD-DC-45 45W Multi-Mount DC Power Distribution Unit

Overview

The Middle Atlantic PD-DC-45 is a 45W universal DC power distribution unit designed to consolidate and protect power delivery for small to medium security and AV devices — access control readers, door strikes, low-voltage sensors, and similar 5VDC or 12VDC loads. With six outputs on each voltage rail, a pair of USB ports, and three NEMA 5-15R convenience outlets, it handles mixed device populations from a single IEC C-14 input. The multi-mount design lets you rack it in a standard enclosure or surface-mount it in a backbox or on a wall — a genuine advantage in retrofit installations where a rack bay is not always available. If you often search for this unit by alternate spelling, the PD-DC-45 is also commonly searched as PD DC 45.

Key Features

• 12 DC outputs across two voltage rails: Six 5VDC and six 12VDC color-coded screw terminals let you wire access control readers and door strikes to the same PDU without a separate power supply per device — clean, auditable wiring in a single enclosure.
• 45W / 12A max capacity: Enough headroom for a mixed load of card readers, sensors, and relay modules. Size your connected devices below the 45W ceiling to leave margin for inrush current on door strike activation.
• MOV surge protection on all outputs: Metal oxide varistor clamping guards downstream devices against voltage transients on the AC feed — important in commercial buildings where HVAC and elevator switching creates regular line noise.
• Individual DC output protection: Each DC circuit is independently protected, so a fault on one 12VDC output does not pull down the remaining eleven — critical for installations where a single door strike fault should not take the entire access system offline.
• 2x USB outputs: Powers small USB-powered devices or serves as a charging point for commissioning tools without requiring a separate adapter — a practical convenience in tight equipment rooms.
• 3x NEMA 5-15R outlets: Provides AC convenience outlets for small wall-wart adapters or test equipment directly at the rack or mounting location, reducing extension cord clutter during installation and service calls.
• IEC C-14 input with 6 ft power cord included: Standard IEC connection integrates cleanly into rack PDUs or UPS outputs already present in most security equipment rooms.
• Supports up to 24 devices: Between the 12 DC terminals, 2 USB ports, and 3 NEMA outlets, a single PD-DC-45 can service a substantial device count in a compact footprint.
• Multi-mount (rack/surface): Ships ready to install in a rack or mount to a surface — no adapter kit required. Useful for distributed access control deployments where a dedicated rack is impractical at each door cluster.

Integration & Compatibility

The PD-DC-45 is voltage-agnostic at the device level — any 5VDC or 12VDC load within the 45W aggregate budget can be wired to it. Common targets include access control readers (typically 12VDC), door strikes and magnetic locks, PTZ camera preamp boards, low-voltage sensors, and intercom sub-panels. For access control installations, pairing this PDU with a properly sized UPS on the AC input side provides battery-backed power to the entire door cluster without individual battery packs per reader. Browse the broader Middle Atlantic power and rack product line for enclosures and UPS options that pair directly with this unit. When planning a multi-door deployment, consult a power distribution planning guide to validate per-output load budgets before final wiring. For larger installations requiring higher wattage or more output channels, consider other units in the DC power distribution category.

Frequently Asked Questions

Q: Can the PD-DC-45 power both 5VDC and 12VDC devices simultaneously?

A: Yes. The unit provides six independent 5VDC outputs and six independent 12VDC outputs concurrently, provided the combined load stays within the 45W / 12A maximum capacity.

Q: Can the PD-DC-45 be wall-mounted instead of rack-mounted?

A: Yes. The multi-mount design supports both rack and surface mounting, making it suitable for installations where a rack enclosure is not available — such as above a door frame or inside a backbox.

Q: What type of connectors are used for the DC outputs?

A: Color-coded screw terminal connectors are used for all DC outputs, allowing direct wire termination without proprietary plugs or patch cables.

Q: Does the PD-DC-45 include surge protection?

A: Yes. MOV (metal oxide varistor) surge protection is built in, along with overload protection and individual DC output protection on each circuit.

Q: How many total devices can the PD-DC-45 support?

A: Up to 24 devices across its 12 DC screw terminals, 2 USB ports, and 3 NEMA 5-15R AC outlets — subject to the 45W aggregate power budget.

Q: What is the input connector type on the PD-DC-45?

A: The input uses an IEC C-14 connector with a 6-foot power cord included, which is compatible with standard rack PDU and UPS output receptacles.

Eden Phillips

What I find genuinely useful about the PD-DC-45 is the individual DC output protection per circuit — not every compact PDU at this price point bothers with per-output isolation, but it matters when you have twelve loads spread across a door cluster and one malfunctioning strike relay should not cascade into a building-wide access outage. The 45W aggregate ceiling is honest sizing for small-to-medium deployments, not a spec padded to win a spec sheet comparison.

Technical Highlights:

• Dual-rail DC outputs (6x 5VDC + 6x 12VDC): Handles mixed-voltage device populations from a single unit — readers and strikes on separate rails without individual wall packs per device.
• MOV surge protection + per-circuit output protection: MOV clamping protects all downstream devices from AC line transients; independent output fusing means a single shorted DC load does not pull down the remaining eleven circuits.
• Multi-mount form factor: Rack or surface installation without adapter kits — a real time-saver in retrofit access control work where dedicated rack space is not always available at each IDF or door cluster location.

Deployment Considerations:

• Budget your connected loads conservatively against the 45W / 12A maximum — door strikes have meaningful inrush current on each actuate cycle, and running close to the ceiling risks nuisance tripping on multi-door simultaneous events.
• The IEC C-14 input assumes a local rack PDU or UPS with the corresponding C-13 receptacle already present; if the mounting location lacks one, you will need an IEC adapter or a separate inline cord, which adds cost and a potential failure point in a life-safety circuit.

The PD-DC-45 fits best in a multi-reader, single-closet access control deployment — a small commercial building or a single floor of a larger facility — where you want consolidated, protected DC distribution without the cost or footprint of a full 19-inch rack power system. It is not the right tool for high-current door controllers or large mag-lock arrays above 45W aggregate; step up to a higher-wattage unit in the Middle Atlantic line for those scenarios.