Lifesafety Power FPO250-E5 250W Power Supply E5 Enclosure
The Lifesafety Power FPO250-E5 is a 250W regulated DC power supply designed for mid-sized surveillance and access control installations requiring centralized 12V or 24V distribution. Housed in a compact E5 metal enclosure (8.5" × 11" × 3"), it delivers 20A at 12V or 10A at 24V—sufficient for 15-30 mixed cameras, door locks, and access control readers drawing typical loads of 8-15W per unit. The selectable dual-voltage output eliminates the need for separate 12V and 24V supplies, simplifying wiring topology and reducing equipment footprint on the rack or in a locked equipment cabinet.
Key Features
- Selectable Dual Voltage Output: 12V or 24V via front-panel selector. Single supply handles both legacy 12V cameras and modern 24V access control systems without converters or parallel units.
- 250W Continuous Power: Rated for 24/7 duty cycle. 20A @ 12V or 10A @ 24V supports 15-30 endpoints (cameras, door strikes, readers, intercoms) in typical mid-scale deployments.
- Compact E5 Enclosure: 8.5" × 11" × 3" form factor. Wall- or DIN-rail mountable in control rooms, utility closets, or equipment cabinets without requiring dedicated cabinet space.
- Regulated Output: Tight voltage regulation under load variation. Prevents nuisance camera resets and access control dropout when devices power on simultaneously.
- Terminal Block Distribution: Screw-down output terminals support up to 10 AWG wire. Pairs seamlessly with standard 12V/24V distribution blocks or custom terminal panels for multi-zone wiring.
- Thermal Management: Built-in cooling with front ventilation slots. Safe for continuous operation in ambient temperatures up to 50°C when properly installed.
- Overload Protection: Circuit protection safeguards against accidental short circuits and prevents cascade failures in shared distribution circuits.
The FPO250-E5 is the backbone of distributed small-to-medium security deployments: parking lots with 20-40 cameras, office buildings with access control across 10-15 doors, warehouse entries combining door readers and intercom stations, or mixed-vendor integrations where legacy 12V and new 24V equipment coexist on a single site. Its regulated output keeps image sensors and logic circuits stable under peak-load transients—a critical requirement when door locks and IR boosters fire on the same supply rail.
Load calculation is straightforward: sum the wattage draw of all connected devices (camera datasheets, lock specifications, reader modules all list power consumption in watts). For a typical 25-camera installation averaging 12W per camera, plus three door strikes at 24W each and a 4-reader access control panel at 20W, total draw is 300W—exceeding the 250W rating. In this case, a second supply or a higher-capacity unit (FPO500 series) is required. Plan for 20% headroom below the 250W limit to avoid nuisance shutdowns during simultaneous power-on of multiple devices (e.g., DVR boot + all cameras + door access reader on startup).
Integration with surveillance platforms is transparent: the power supply simply energizes cameras and ancillary devices; the camera feeds and access control wiring connect independently to the NVR, VMS, or access control panel via Ethernet or SDI. No software configuration of the supply itself is required. Standard Lifesafety Power designs ensure compatible terminal voltage with Axis, Hikvision, Uniview, and other major camera manufacturers rated for 12V or 24V DC input. Confirm your site's total power requirement before ordering; oversizing by 100W provides operational headroom at minimal additional cost.
The FPO250-E5 carries standard industrial DC supply certifications. It is suitable for U.S. domestic installations and integrations with UPS backup systems (ensure the UPS supports the 250W draw during switchover). If your deployment requires Power over Ethernet (PoE) injection for IP cameras, this supply does not replace PoE injectors—use it for legacy coax-fed analog cameras, 12V/24V access control, and door hardware distribution only.
Marty AllisonPerspective based on aggregated IP Security Depot and affiliated engineering team experience.
We've deployed the FPO250-E5 across hundreds of mid-market integrations—parking facilities, retail chain rollouts, municipal building access upgrades—and it consistently proves itself as a reliable, compact workhorse. The selling point isn't novelty; it's predictability. In our experience, site power planning often underestimates simultaneous load (cameras, door readers, and auxiliary devices all draw peak current during system boot or during breach events when IR illuminators spike). The FPO250-E5's tight voltage regulation prevents the cascading resets we used to see with cheaper supplies. The dual-voltage selector eliminates the logistics nightmare of stocking two SKUs or cramming a 12V and a 24V supply into cabinets that were spec'd for one unit. On a 40-camera deployment mixing older 12V turret cameras with newer 24V access control, you size once, order once, install once. That's real capex and labor savings for integrators. Against the higher-capacity FPO500, the FPO250 is the right choice when you know your actual load is under 200W; it costs less, runs cooler, and doesn't waste cabinet real estate. The trade-off: if future expansion pushes you past 250W, you'll need supplementary supplies on separate circuits—plan your cable routes with that possibility in mind from day one.
Technical Highlights:
- Regulated Dual-Voltage Output (12V/24V selectable): Eliminates the need for separate supplies and simplifies wiring on mixed-legacy deployments. Tight voltage regulation (typically ±5%) keeps cameras and access readers stable under load transients—no image sensor glitches or reader timeouts when door strikes fire.
- 250W Continuous (20A @ 12V / 10A @ 24V): Sufficient for 15-30 typical security endpoints. Do the math on each site: a 25-camera installation at 12W average plus door hardware and readers often lands between 180W and 240W—safe margin within this supply's ceiling.
- E5 Metal Enclosure with Front Ventilation: Compact wall- or rail-mount form factor (8.5" × 11" × 3") fits standard equipment racks and utility closet shelving. Metal construction shields against electrical noise in high-density installations.
- Screw-Down Output Terminals (10 AWG rated): Direct connection to terminal distribution blocks or custom panels without splitters. Reduces failure modes from loose connectors or crimped connector degradation.
- Overload and Short-Circuit Protection: Automatic shutdown under fault conditions protects downstream devices and prevents fire risk. Recovery is manual reset (check supply front panel for reset button) to force operator diagnosis of the short.
Deployment Considerations:
- Load Planning is Non-Negotiable: Add a 20% safety margin to your calculated total wattage. If you sum 200W of devices, the FPO250 is borderline—a 25W spike from simultaneous IR boosts or door access locks will exceed capacity and trigger protective shutdown. For any deployment trending above 220W, move to the FPO500 or split the load across two supplies on separate circuits.
- Voltage Selection is One-Time: The 12V/24V selector on the front panel is not a dynamic switch. Decide your voltage at installation time, set it once, and do not swap it mid-deployment without shutting down all devices. Switching under load can damage connected equipment.
- Ventilation Around the Unit is Critical: The E5 enclosure dissipates heat via front and side vents. In a locked utility closet, ensure 4-6 inches of clearance on all sides and do not stack equipment directly above or below the supply. Ambient temps above 50°C (e.g., uninsulated attics in summer) will degrade performance and shorten component life.
- Integration with UPS Backup: If you pair the FPO250 with a battery backup, confirm the UPS can handle the 250W peak draw and the target backup runtime. A 500VA UPS can sustain the FPO250 and attached devices for 15-30 minutes depending on actual load. Do not undersized the UPS; it will drop offline under real peak load.
- Terminal Wiring and Circuit Labels: Use a terminal distribution block (Phoenix Contact MKDS series, Weidmüller Top, or equivalent) to fan out the supply to individual circuits. Label each output circuit (e.g., "Lot A Cameras," "Building 2 Door Locks") to prevent accidental overloads or future service confusion. A single catastrophic short on one circuit will shut down the entire supply—clear labeling speeds troubleshooting.
- No PoE Integration: This is a DC-only supply for legacy analog cameras and 12V/24V ancillary devices. IP cameras requiring Power over Ethernet (PoE) must be fed through dedicated PoE injectors or PoE-enabled network switches. Do not attempt to inject PoE voltage through this supply's outputs.
The FPO250-E5 is the right choice for integrators managing 15-30 mixed-voltage security endpoints in a single facility or campus quad—parking lots, retail locations, small office complexes, municipal building access upgrades, and warehouse entry points where budget and space constraints rule out distributed power architectures. Its simplicity, thermal stability, and broad voltage compatibility make it a go-to standard for mid-market deployments. Explore the full Lifesafety Power catalog for higher-capacity supplies (FPO500, FPO1000) if your load expands or you require redundancy.
