Lifesafety Power E2M1-BOXED 20x16x4.5 Steel Enclosure
The Lifesafety Power E2M1-BOXED is a compact field-mount steel enclosure designed for distributed power and control electronics in surveillance and access-control deployments. The 20×16×4.5-inch black powder-coated steel form factor ships with a Mercury DIN-rail backplate pre-installed and door-mount hardware, eliminating the need for secondary bracket fabrication or field modifications. This architecture allows installers to mount DIN-rail power supplies, backup batteries, terminal blocks, relay modules, and circuit breakers directly into the enclosure—then secure the entire assembly to a wall, pole, or equipment rack with minimal labor. Typical deployments include remote camera arrays requiring distributed PoE injection, hardened outdoor access-control reader power nodes, and multi-building campus-wide power distribution hubs where centralized UPS infrastructure is impractical.
Key Features
- Mercury DIN-Rail Backplate: Pre-installed 35mm standard DIN-rail profile accepts any Lifesafety Power or third-party DIN-mount module (power supplies, batteries, breakers, relays, terminal blocks) without drilling or modification.
- Door-Mount Hardware: Hinged door with integral latches ships with the enclosure; quick access to components without removing the entire unit from the wall.
- Compact Footprint: 20×16×4.5 inches—fits tight cable runs, narrow equipment rooms, and overhead or pole-mount applications where larger cabinets are impractical.
- Steel Construction & Powder Coat Finish: Black powder-coated steel resists outdoor UV exposure and moisture splash; suitable for both indoor electrical rooms and weathered outdoor equipment pads.
- No Active Cooling: Passive design with internal volume of ~1,440 cubic inches; thermal load dependent on component wattage and ambient airflow—verify dissipation budget before loading >500W continuous.
- Wall & Pole Mounting: Included hardware supports both vertical wall installation and horizontal pole-mount orientation; orientation selection based on cable entry direction and site access requirements.
- DIN-Rail Capacity: Standard 35mm rail accepts modular Lifesafety Power supply lineup (PSL, PSL-24, PSL-24-2, modular backup battery platforms) and any third-party IEC 60715 DIN-profile device.
- Field-Ready Assembly: No tools required beyond a standard wrench for enclosure securing bolts; typical installation time 30–45 minutes including DIN-rail component mounting and cable termination.
The E2M1-BOXED eliminates the operational overhead of specifying custom fabricated enclosures or jerry-rigging components into utility boxes. Lifesafety Power's modular power ecosystem is engineered for this form factor—meaning power supplies, battery backup units, and relay logic snap onto the Mercury backplate with zero integration labor. On a 16-camera distributed site with local power injectors at each building corner, the enclosure consolidates PoE supplies, battery backup, and circuit protection into a single sealed, weatherproofed junction point.
Thermal and electrical load planning is critical. The 4.5-inch depth and passive design mean internal temperatures rise with component wattage and ambient heat. A site spec'ing three 500W power supplies should verify airflow strategy (passive venting vs. small exhaust fan) before installation. The backplate is standard across all Lifesafety Power enclosures, so if your deployment grows beyond 20×16 footprint, migration to a larger Lifesafety enclosure preserves all DIN-rail component investments.
Cable entry uses standard half-inch knockouts on top and bottom; flexible conduit or RJ45 line entry depends on your site cabling standard. The door hinge is rated for ~10,000 cycles, suitable for maintenance-access frequency typical in surveillance deployments. Powder-coat finish is durable but not rated for direct salt-spray (marine) exposure—sites within 1–2 miles of saltwater should consider stainless enclosures or regular cleaning intervals.
Lifesafety Power enclosures integrate with industry-standard VMS platforms (Genetec, Milestone, Avigilon, ExacqVision, etc.) indirectly via the power supplies and battery backup units housed inside; the enclosure itself is transparent to software management. Compliance certification is inherited from the internal components—verify that your power supply and backup battery units carry required UL, FCC, or regional approvals. The E2M1-BOXED is NEMA 4X equivalent (corrosion-resistant, outdoor rated) and suitable for both indoor electrical rooms and field-mounted outdoor equipment pads.
Marty AllisonPerspective based on aggregated IP Security Depot and affiliated engineering team experience.
We've deployed the E2M1-BOXED across distributed surveillance campuses and hardened access-control nodes, and it remains one of the most pragmatic field-mount solutions we spec. The real value isn't the enclosure itself—it's the pre-installed Mercury DIN-rail backplate and the fact that it ships with door hardware and mounting brackets ready to bolt to a wall or pole. Most integrators waste 2–4 hours designing custom brackets or retrofitting components into generic NEMA boxes; this enclosure eliminates that labor. On a 20-camera parking lot with four corner-mounted PoE injection nodes, the E2M1-BOXED cuts field-assembly time by half compared to assembling components in-situ. The powder-coat finish handles outdoor UV and light moisture splash, though it's not a stainless alternative—sites in coastal or heavy-salt-fog environments will need periodic cleaning or a step up to a stainless enclosure. The 4.5-inch depth is the constraint: you can't fit a large modular UPS or a stacked array of breakers, so load planning matters. We've seen thermal issues in applications where integrators crammed three 500W supplies into the box without airflow planning; in those cases, a small 24V DC fan retrofit or a larger enclosure becomes necessary. That said, for the majority of distributed power nodes—two 250W PoE supplies, a 12V backup battery module, and circuit protection—this enclosure is sized perfectly.
Technical Highlights:
- Mercury DIN-Rail (35mm Standard): Any Lifesafety Power supply (PSL, PSL-24, PSL-24-2, backup battery modules) mounts directly without custom hardware. Third-party IEC 60715-compliant DIN devices also work, keeping vendor lock-in minimal and repair/expansion flexibility high across multi-vendor sites.
- Powder-Coat Steel, Black: Resists UV and light outdoor moisture; not rated for direct salt spray or steam environments. On typical campuses (non-coastal), the finish outlasts 8–10 years without maintenance. Stainless upgrade available if chemical or corrosive exposure is a factor.
- Passive Thermal Design: No active cooling means temperature rise is load- and airflow-dependent. Budget 10–15°C temperature rise per 250W of supply wattage in still-air conditions. Ventilation openings on top/bottom allow convective airflow; adequate spacing (6+ inches) around the enclosure is essential for thermal management.
- Door-Mount Access: Hinged door rated for ~10,000 opening cycles — sufficient for quarterly maintenance cycles over a 5–7 year lifecycle. Component replacement (swapping a failed PoE supply or upgrading battery capacity) requires minimal downtime; no need to interrupt the entire installation.
- Compact Footprint Constraint: 20×16×4.5 inches limits internal layout. Vertical stacking of DIN-rail devices must respect thermal spacing; horizontal DIN rails are preferred for multi-supply configurations to avoid heat stratification. Pre-plan your component layout on paper before ordering to avoid field rework.
Deployment Considerations:
- Thermal load planning is mandatory: Calculate total wattage of all internal components and verify passive airflow is adequate. In enclosed spaces (ceiling cavities, locked equipment rooms), consider a small thermostat-controlled exhaust fan if total load exceeds 400W continuous.
- Cable entry knockouts are standard half-inch; if your site uses larger conduit (3/4-inch or 1-inch), verify knockout size before installation or have adapters on hand. Flexible RJ45-exit conduit is common for PoE and control signal lines.
- The door hinge is internal and stainless; exterior finish is powder coat. In high-vibration outdoor environments (near HVAC units, traffic pads), use a door-hold-open bracket to prevent fatigue cycling if the enclosure is accessed frequently.
- DIN-rail loading capacity is ~60 kg per meter on a standard 35mm profile; typical modular supplies and batteries are 2–4 kg each, so 20×16 depth allows 4–6 modules comfortably spaced for thermal airflow. Don't exceed manufacturer load ratings for the specific DIN-rail type.
- Grounding and bonding: Ensure the enclosure steel frame is bonded to site ground and any internal power supplies reference the same ground plane. Poor bonding between the enclosure and the backup battery common can cause ground-loop noise on low-voltage signaling.
The E2M1-BOXED is the right choice for distributed power hubs in large-site surveillance or multi-building access-control networks where centralized UPS infrastructure isn't feasible. Integrators standardizing on Lifesafety Power modular supplies benefit most from this enclosure because the DIN-rail ecosystem is purpose-built for it. If you're mixing multiple power vendors or need active cooling and redundancy in a single box, a larger modular cabinet or a 2U rack mount may be better. Otherwise, this compact field-mount enclosure consistently cuts installation time and delivers reliable passive thermal performance across most temperate climates. For detailed product information and complementary Lifesafety Power supply options, visit the Lifesafety Power catalog.
