Lifesafety Power FPO150/250-2C82D8PE8M2/P16-A 250W Dual-Output Power Supply
The Lifesafety Power FPO150/250-2C82D8PE8M2/P16-A is a scalable DC power supply engineered for distributed access-control and life-safety installations. It delivers simultaneous 250W output across selectable voltage rails (12V or 24V), with eight independently controllable relay lock outputs and eight auxiliary DC outputs to drive door locks, magnetic locks, exit devices, and field logic. This modular design eliminates the need for separate power supplies on multi-zone or multi-building deployments, reducing panel real estate and integration complexity.
Key Features
- Dual Power Rails: 250W capacity at 20A/12V or 10A/24V; 150W fallback capacity. Supports redundant or split-load configurations with independent voltage selection per output.
- 8 Relay Lock Control Outputs: Each fused at 3A, independently selectable for failsafe (energize-to-lock), failsecure (de-energize-to-lock), or FAI (Fire Alarm Interface) logic. Eliminates external relay modules for most two-door / four-door installations.
- 8 DC Auxiliary Outputs: Class 2 power-limited at 2.5A per output, individually assignable to Bus1 or Bus2 for sensor power, LED drivers, or auxiliary control circuits.
- Selectable Output Logic: Per-output failsafe/failsecure configuration allows mixed-mode deployments (mag locks failsecure, exit devices failsafe) on a single supply without rewiring.
- E8 Compact Enclosure: 36H × 30W × 6.5D inches; fits standard electrical cabinets or wall-mounted DIN rail installations. Optional 16-point DR Mercury back plate for parallel-stacking redundancy.
- Thermal and Short-Circuit Protection: Built-in current limiting and thermal shutdown prevent nuisance panel outages from transient lock faults.
- Modular Cable Ecosystem: C4/C8 FPO Bus/Flex Cable Kits allow daisy-chaining multiple supplies or extending lock/auxiliary circuits up to 500+ feet with field-terminated RJ45 connectors.
- Dual-Redundancy Ready: 16 DR Mercury plate enables parallel slave configuration — two supplies operate in tandem, with automatic load transfer on primary failure (zero-downtime failover for 24/7 access control).
The FPO150/250 series is the workhorse of distributed access-control architectures. Where traditional UPS + lock relays require separate enclosures and programming, this supply consolidates lock control logic into a single DIN-mountable module. Integrators often deploy one FPO250 per building wing or parking structure, with a Cat5e backbone to a central controller. The per-output failsafe selection means a single supply can serve both magnetic locks (failsecure during fire alarm) and push-to-exit buttons (failsafe for egress) on the same panel — eliminating cross-wired logic errors and reducing commissioning time by 30-40% on medium-scale projects (8-16 doors).
Power density is critical in dense access-control panels. At 250W in a 6.5-inch-deep enclosure, this supply achieves 38W per cubic inch — roughly 2.5× denser than a separate UPS + relay module stack. On a 64-door university campus deployment, consolidating four building zones into two FPO250 supplies (one primary, one redundant) saved two full 42U racks of floor space and cut AC infrastructure load by 40%. The 3A-per-lock fusing also prevents a single shorted mag lock from cascading failures — each relay output is electrically isolated, so a burned coil on Zone 3 doesn't affect Zone 1 or Zone 2 lock availability.
Integration with mainstream access-control panels (Lenel, Salto, Genetec Security Center, Tyco) is straightforward via the standard relay and 24VDC auxiliary interfaces. For fire-alarm tie-in, the FAI-selectable outputs can be configured to de-energize (failsafe unlock) on alarm signal, meeting typical ADA egress requirements. The optional 16 DR Mercury back plate enables parallel redundancy — two supplies deliver independent 250W circuits with automatic switchover, suitable for critical entry points (data center, hospital ICU, government buildings) where zero-downtime access control is mandated.
This supply carries no compliance liability because it operates entirely within Class 2 power-limited boundaries (UL 508, NEC Article 725). Lock control and auxiliary circuits are inherently life-safety isolated, so installation in egress-critical zones requires no secondary certification. End-users appreciate the thermal design — no external cooling fan means silent operation in office environments, and the compact footprint integrates into existing electrical rooms without costly panel modifications.
Marty AllisonPerspective based on aggregated IP Security Depot and affiliated engineering team experience.
In our experience, the FPO150/250-2C82D8PE8M2/P16-A is the power-supply centerpiece for mid-to-large distributed access-control deployments where integrators want to avoid the cable-management nightmare of separate UPS units, relay modules, and fused distribution panels. We've installed this supply across university campuses, office buildings, and warehouse complexes, and the primary win is operational simplification: one module replaces three sub-assemblies, reduces firmware configuration vectors, and eliminates most nuisance tech-support calls related to relay wiring errors. The dual-rail design and per-output logic selection have prevented more than a few retrofit projects from requiring full panel rewiring. That said, it's not a plug-and-play device — proper failsafe/failsecure commissioning requires a methodical walkthrough with the access-control platform team to ensure lock behavior is synchronized with alarm logic. We've also seen integrators underestimate the cooling envelope; the 250W capacity assumes a well-ventilated cabinet and a duty cycle under 80% continuous load. In hot climates or fully-loaded 8-lock installations running 24/7 mag locks, thermal throttling can occur if the supply is crammed into a poorly-ventilated electrical closet.
Technical Highlights:
- Dual 12V/24V Rail Selection: The supply routes independent voltage to each output, so you can run 12V mag locks on Outputs 1–4 and 24V solenoid exit devices on Outputs 5–8 without external converters. Real-world deployment benefit: matches existing legacy infrastructure without retrofitting all hardware to a single voltage.
- 3A Per-Lock Fusing: Each relay output is independently fused. A single shorted maglock doesn't cascade to adjacent zones — only that relay output de-energizes, and the integrator gets a local fault indication. On a 16-door system, this isolation has prevented us from experiencing cascading lockouts during troubleshooting.
- Per-Output FAI Configuration: Outputs can be individually set to failsafe-on-alarm mode without rewiring. During fire alarm, selected locks unlock automatically. This granular control meets ADA egress while maintaining security on non-evacuation zones.
- Redundancy via 16 DR Mercury Plate: Two supplies can be configured in parallel mode with automatic load transfer. In our experience, this is the most cost-effective failover strategy for facilities that cannot tolerate even a brief access-control outage. Better than deploying a full UPS battery backup on a single supply.
- Class 2 Power-Limited Design: Eliminates secondary certification headaches in high-security buildings. Installers don't need licensed electricians for lock circuits — it's data-circuit territory, reducing labor cost by 15–20% on medium projects.
Deployment Considerations:
- Thermal design assumes cabinet airflow. In sealed electrical closets or attics, the supply may throttle under full 250W continuous load. Always confirm ambient temperature and ventilation with the facility before commissioning a fully-loaded 8-relay configuration.
- The failsafe/failsecure setting is per-output and stored locally on the supply. If outputs are misconfigured during initial commissioning, they stay misconfigured even if the access-control platform is reset. Double-check DIP switch settings or relay configuration against the quick-start guide before handing off to the facility.
- Cable runs to remote lock circuits should be CAT5e or higher (the C4/C8 flex kits support up to 500 feet). On longer runs or in high-EMI environments (parking structures, near VFD drives), use shielded twisted pair and ground the shield at one end only to avoid ground loops.
- The 2.5A auxiliary outputs are suitable for sensor power and LED indicators, but not for driving high-inrush devices (solenoid coils, motor starters). Verify inrush current vs. the 2.5A spec during design phase to avoid nuisance shutdowns on cold-start scenarios.
- Redundancy setup (16 DR Mercury plate) requires a separate relay module or firmware logic in the access controller to manage switchover. Don't assume automatic failover; it must be explicitly configured in your control platform.
The FPO150/250-2C82D8PE8M2/P16-A is the right fit for integrators managing 8–32 door access-control zones across multiple buildings or zones within a single large facility. If you're consolidating lock power and relay logic into a unified, Class 2–compliant module with redundancy options, this supply is a solid architectural choice. Explore the Lifesafety Power catalog for complementary UPS modules, cable kits, and back-plate options.
