APC Back-ups ES 6 Outlet 425VA 120V LAM - BE425M-LM

APC by Schneider Electric BE425M-LM Standby UPS, 6-Outlet 425VA/255W 120V

Overview

The APC BE425M-LM is a 425VA / 255W standby (offline) UPS designed to keep small surveillance nodes, network edge devices, and desktop workstations running through brief power interruptions and to clean up the line noise that shortens equipment life. At 255 W of real output power and six NEMA 5-15R outlets, it covers a compact IP camera head-end — think a PoE injector, a small network video recorder, and a network switch — without requiring a dedicated rack shelf or PDU. The BE425M-LM (often searched as BE425M LM) draws from a standard NEMA 5-15P plug, so no electrician, no panel work, no special circuit.

Key Features

• 425VA / 255W Standby Topology: Standby (offline) UPS passes utility power directly during normal operation — no conversion losses, no added heat. The inverter only kicks in on transfer, which keeps the unit quiet (rated 40 dB) and efficient for always-on security equipment that rarely sees outages but needs that bridge when they happen.
• 255 W Real Power Capacity: 255 W is the hard ceiling for connected load. A typical compact NVR draws 15–25 W; add a PoE switch at 30–60 W and a workstation monitor and you're still comfortably under budget. Overloading a UPS is a common field mistake — size your connected watts, not just the VA rating.
• 6 NEMA 5-15R Outlets: Six standard three-prong outlets accommodate a multi-device edge node without a separate power strip in the loop. Fewer connection points means fewer failure modes in a locked wiring closet or camera cabinet.
• 180-Joule Surge Energy Rating: 180 J of surge absorption protects downstream equipment from voltage spikes on the utility line — relevant in environments with HVAC compressors, elevator drives, or other inductive loads sharing the branch circuit. Not a substitute for a dedicated SPD on the main panel, but meaningful protection at the device level.
• 88–139 V Input Operating Range: The unit will stay on utility (not transfer to battery) across a wide 88–139 V window. That's useful in older buildings or regions with chronically low or high line voltage, where a narrower window would drain the battery on every voltage sag.
• Square-Wave Output: The BE425M-LM outputs a square waveform on battery — standard for standby-class UPS units. This is compatible with most switching power supplies (NVRs, network switches, IP cameras). It is not suitable for equipment that requires a pure sine wave output, such as some active-PFC desktop power supplies or medical-grade loads.
• Low-Battery Audible Alarm: An audible alarm triggers on low battery, giving operators time to initiate a graceful shutdown before power is exhausted. In an unmanned comms room, that alarm is the only local notification — plan accordingly if the room is routinely unoccupied.
• 50/60 Hz Input Compatibility: Accepts both 50 Hz and 60 Hz utility input, which matters for deployments in Latin American markets (the -LM suffix signals this variant's regional targeting) where frequency tolerance varies by grid.
• 5 A Maximum Output Current: At 120 V output, 5 A limits the total branch current to 600 W — well above the 255 W real-power ceiling, so the current limit won't be the binding constraint in normal use.

Integration & Compatibility

The BE425M-LM integrates into small-to-mid surveillance edge nodes without software or protocol configuration. It is a passive power-protection device — plug-and-play with any IP camera system, access control panel, or network switch drawing standard 120 V AC. For managed shutdown behavior, verify whether your equipment's UPS management software supports APC's USB or serial signaling (check APC's compatibility list for your specific NVR or server model — this unit's interface type is not confirmed in available evidence, so do not assume USB connectivity without verifying the BE425M-LM datasheet).

For larger surveillance head-ends requiring more runtime or higher wattage capacity, consider stepping up within the APC Back-UPS line to a higher-VA model. If your deployment includes rack-mounted NVRs or servers, a rack-form-factor UPS with pure sine wave output and network management card support is the correct path instead.

Pair this unit with a dedicated PoE switch and compact NVR for a complete protected edge node. For surge-only protection without battery backup on secondary outlets, APC's SurgeArrest line handles that use case at lower cost.

Frequently Asked Questions

Q: What is the real power output of the BE425M-LM, and how do I know if my equipment fits within it?

A: The BE425M-LM delivers 255 W of real output power. Add up the wattage draw of everything you plan to plug in — found on each device's label or spec sheet — and keep the total below 255 W. The 425VA rating is the apparent power ceiling; for resistive and switching-supply loads, the 255 W figure is the practical limit.

Q: Is the BE425M-LM suitable for equipment with active-PFC power supplies?

A: The BE425M-LM produces a square waveform on battery. Active-PFC power supplies (common in higher-end desktop PCs and some servers) may not operate reliably on a square wave. For those loads, a UPS with pure sine wave output is required. Most NVRs, IP cameras, and network switches use standard switching supplies and are compatible with square-wave output.

Q: What does the -LM suffix mean on the BE425M-LM?

A: The -LM designates the Latin America variant. This model is configured for 120 V / 50–60 Hz operation and is appropriate for deployments in regions where both 50 Hz and 60 Hz grid frequencies are encountered.

Q: What input voltage range will the BE425M-LM tolerate before switching to battery?

A: The unit remains on utility power across an input range of 88 V to 139 V. Only voltages outside that window trigger a transfer to battery, which helps preserve battery life in areas with variable grid voltage.

Q: How many outlets does the BE425M-LM provide, and are they all battery-backed?

A: The BE425M-LM has 6 NEMA 5-15R outlets. Consult the product label or APC documentation to confirm which outlets are battery-backed vs. surge-only — this distinction is not confirmed in available evidence for this specific SKU.

Q: What is the surge energy rating of the BE425M-LM?

A: The BE425M-LM carries a 180-joule surge energy rating, providing protection against voltage transients on the utility line at the device level.

James Everett

The BE425M-LM is a standby UPS I'd reach for when the goal is basic bridge protection and surge absorption for a compact surveillance edge node — not runtime extension for a full server room. At 255 W real output, it covers a small NVR and PoE switch with headroom, and the 88–139 V input window means it won't cycle its battery on every minor voltage fluctuation in an older facility.

Technical Highlights:

• 255 W Real Power: 425VA sounds bigger than it is — 255 W is the binding constraint. Confirm your connected load wattage before deployment; a single overloaded UPS is more dangerous than no UPS at all.
• 180 J Surge Rating: Adequate for line-level transients from shared branch circuits with inductive loads, but this is not a whole-building surge suppressor. Pair it with proper SPD protection upstream if the facility has lightning exposure or heavy industrial equipment on the same panel.
• Square-Wave Output: Works correctly with the switching power supplies in virtually every IP camera, NVR, and managed switch. The limitation only surfaces with active-PFC PC power supplies — flag that for any integrator deploying this alongside a workstation-class machine.

Deployment Considerations:

• The -LM variant targets Latin American grid conditions (50/60 Hz, variable voltage) — confirm this is the correct regional SKU before ordering for a US-domestic deployment where the standard BE425M may be more appropriate.
• Runtime on battery is not specified in available evidence — do not promise specific runtime to end users without consulting APC's runtime charts for this model and the actual connected load wattage.

The BE425M-LM earns its place in a compact surveillance closet serving a 4–8 camera system: NVR, PoE switch, and a managed modem or router all protected on a single unit that fits on a shelf without occupying rack space.