Lifesafety Power FPO75-BOXED 120VAC to 12VDC/24VDC Regulated Power Supply
Overview
The Lifesafety Power FPO75-BOXED is a compact regulated power supply designed for distributed security infrastructure where a single 120VAC source must feed mid-range DC loads. Input is standard 120VAC, 60 Hz line voltage; output voltage is factory-selectable at purchase as either 12VDC @ 6A or 24VDC @ 3A. The boxed enclosure allows installation in equipment cabinets, wall-mounted backboards, or distributed junction boxes typical of small to mid-sized security deployments. The FPO75-BOXED (often searched as FPO75 BOXED) is a no-nonsense choice when you need reliable regulated DC power without integration complexity.
Key Features
- Selectable output voltage (12VDC or 24VDC): Configure at purchase based on your end devices—IP cameras, access control readers, strike mechanisms, and auxiliary sensors each have a voltage requirement. You cannot change the output voltage after manufacturing, so confirm your total system voltage architecture before ordering.
- 120VAC input, 60 Hz: Standard North American wall power. Wire to a properly sized circuit breaker or fused disconnect per local electrical code and your system engineer's design. No exotic power conditioning required.
- 6A capacity @ 12VDC output: Supports multiple mid-draw devices in parallel. At 12V, you get 72 watts of continuous power—sufficient for 4–6 IP cameras, 2–3 access readers, or a mix of ancillary equipment depending on individual device current ratings.
- 3A capacity @ 24VDC output: 72 watts at 24V. Lower current capacity reflects the voltage step-up; use this for higher-voltage equipment like certain industrial sensors or specialized card readers that prefer 24VDC over 12VDC.
- Boxed form factor: Compact enclosure suitable for DIN-rail mounting or tabletop placement in equipment rooms. Takes up minimal cabinet real estate compared to rack-mount alternatives, though it sacrifices the multi-channel consolidation of larger power distribution units.
- Single output: One voltage rail per unit. If you need both 12VDC and 24VDC in the same deployment, plan to install two FPO75-BOXED units or evaluate a multi-output model from the broader Lifesafety Power catalog.
Integration and Compatibility
The FPO75-BOXED integrates with any 12VDC or 24VDC end device that draws within the specified current limits. Common endpoints include analog and IP surveillance equipment, card readers, electromagnetic strikes, and auxiliary sensors. Before installation, confirm:
- Total current draw of all connected devices does not exceed 6A @ 12VDC or 3A @ 24VDC.
- End devices accept the selected output voltage—mixing 12V and 24V equipment on a single supply is not possible without a separate converter.
- Your electrical infrastructure includes a properly rated circuit breaker or fused disconnect for the 120VAC input line.
When to Choose a Different Model
If your deployment requires higher current capacity (sustained draws exceeding 6A @ 12V or 3A @ 24V), a larger-capacity model in the Lifesafety Power catalog or a dedicated multi-output power distribution unit may be more cost-effective than daisy-chaining units. If you need integrated battery backup for emergency power during AC loss, evaluate Lifesafety Power charger-backup models or a separate UPS. If powering networked endpoints exclusively, a PoE switch may eliminate the need for DC power supplies altogether—assess your site's electrical distribution strategy with your system engineer.
Frequently Asked Questions
Q: Can I change the output voltage from 12VDC to 24VDC after installation?
A: No. Output voltage is factory-set and fixed. Order the FPO75-BOXED configured for 12VDC or 24VDC based on your system's voltage requirement before purchase.
Q: What happens if I connect devices that draw more than 6A @ 12VDC?
A: The supply will not regulate properly and may shut down or degrade performance. Calculate total device current before installation and ensure the sum remains below the rated output.
Q: Can the FPO75-BOXED supply both 12VDC and 24VDC simultaneously?
A: No. It has one selectable output. For mixed-voltage deployments, install two units or use a multi-output power distribution model.
Q: Is the FPO75-BOXED suitable for outdoor installation?
A: The boxed enclosure is not rated for direct weather exposure. Install it indoors, in a sheltered equipment cabinet, or a weatherproof junction box if outdoor mounting is required.
Q: What wire gauge and breaker size do I need for the 120VAC input?
A: Follow your local electrical code and the manufacturer's installation documentation. At full load, input current is approximately 6A (72W ÷ 120V), so a 15A or 20A circuit is typical. Consult your system engineer or electrician for final sizing.
Q: Does the FPO75-BOXED include a battery or backup power?
A: No. This is a regulated power supply only. For battery backup, evaluate dedicated charger-backup units or a UPS system.
The FPO75-BOXED is a straightforward regulated power supply—no surprises, no feature creep. For integrators laying out distributed security systems across small warehouses, office parks, or retail branches, this unit fills a real gap. The 72-watt capacity at either 12VDC or 24VDC is enough for a modest cluster of cameras and readers without forcing you into oversized multi-output PDUs. The voltage selection at order time is the key constraint; confirm your architecture before you buy.
Technical Highlights:
- Selectable output (12VDC @ 6A or 24VDC @ 3A): Both configurations deliver 72 watts. The choice depends entirely on your endpoint voltage requirement—there's no performance advantage to one or the other, only compatibility. Most IP cameras run 12VDC; some industrial sensors and readers prefer 24VDC.
- Standard 120VAC, 60 Hz input: No transformer or multi-voltage fumbling. Wire it to any North American outlet with a properly sized breaker. Input current at full load is roughly 0.6A, so a standard 15A or 20A circuit handles this without strain.
- Boxed enclosure form factor: Compact and space-efficient in cabinet layouts, but not weather-sealed. If you're mounting this in a distributed junction box outdoors, wrap it in a NEMA 4X or 4 enclosure and plan for thermal management in hot climates.
Deployment Considerations:
- Load budgeting is non-negotiable: The FPO75-BOXED has no supervision or load-sharing logic. If your total connected devices exceed 6A @ 12V or 3A @ 24V, the supply degrades or shuts down. Measure or calculate every device's current draw during design phase—don't rely on guesswork.
- Single output means single voltage: If your site has mixed 12V and 24V equipment, you need two FPO75-BOXED units. Plan accordingly in your bill of materials and cabinet layout.
- No battery backup: This is line-powered only. Any loss of 120VAC means immediate loss of DC output. For sites requiring ride-through on AC outages, add a UPS or evaluate Lifesafety Power's charger-backup models in parallel.
The FPO75-BOXED is the right choice for warehouse automation sites, retail security systems, and small commercial deployments where 72 watts of regulated power is adequate and form factor matters more than feature density. Don't force it into an overloaded role—if you're regularly daisy-chaining units because a single supply can't keep up, upgrade to a larger multi-output PDU instead.
