APC Back-ups NS 6 Outlet 450VA 120V RE - BN450M-CA

APC by Schneider Electric BN450M-CA Back-UPS NS 6-Outlet 450VA Standby UPS

Overview

The APC by Schneider Electric BN450M-CA is a 450VA/255W standby uninterruptible power supply designed to protect small security appliances, network edge devices, and desktop systems from power interruptions and voltage irregularities. With six outlets, a NEMA 5-15P input, and a compact desktop footprint at 5.51 inches wide and 5.7 lbs, the BN450M-CA is sized for installations where space is at a premium — a wall-mount bracket, small server closet shelf, or under-desk deployment. It accepts input from 88V to 139V before switching to battery, giving it reasonable tolerance for sites with fluctuating utility power.

Key Features

• 450VA / 255W Capacity: Sized to carry a PoE network switch, a small NVR, or a desktop workstation through a short outage — enough runtime to execute a graceful shutdown or bridge a brief utility interruption without data loss or recording gaps.
• 6 ms Typical Transfer Time (10 ms Maximum): Switches from utility to battery in 6 ms typically, 10 ms at worst. Virtually all modern power supplies tolerate up to 20 ms without dropout, so connected devices will stay running without a brownout reset during the switchover.
• 88–139V Input Acceptance Window: The wide input voltage range means the BN450M-CA rides through sags down to 88V and surges up to 139V on utility power without burning battery cycles — important in older commercial buildings or light-industrial sites where wall voltage isn't always clean.
• Standby Topology with Square Wave Output: The standby design keeps efficiency high during normal operation. The square wave output is suitable for most switching power supply loads (computers, network gear, cameras) but is not compatible with active PFC power supplies found in some higher-end servers or workstations — verify load compatibility before deploying with those devices.
• 6 Outlet Configuration, NEMA 5-15P Input: Six outlets on a single unit consolidate power protection for a multi-device edge node — for example, a compact NVR, a switch, and a monitor — without requiring a separate PDU. The standard NEMA 5-15P plug connects directly to any standard 120V circuit.
• LED Status Display: Front-panel LED indicators show on-line vs. on-battery status at a glance, so technicians and end users can confirm power state without logging into any software or connecting a USB cable.
• 50/60 Hz Auto-Sensing, ±3 Hz Sync to Mains: Auto-senses line frequency at installation — no manual configuration needed when deploying across different facilities or regions with 50 Hz or 60 Hz grids.
• Operating Altitude to 10,000 ft: Rated for operation up to 10,000 feet above sea level, making it deployable in high-altitude facilities — data closets in mountain-region commercial buildings where some UPS units derate significantly.
• 0–95% Relative Humidity (Non-Condensing) Operating Range: Covers the full humidity range of typical conditioned commercial spaces without requiring additional environmental control around the unit.

Integration & Compatibility

The BN450M-CA (often searched as BN450M CA) is built for standard 120V North American deployments. It connects to any NEMA 5-15R receptacle and outputs the same NEMA 5-15R format on its six outlets. The square wave topology is compatible with standard resistive and switching-power-supply loads — network gear, IP cameras, access control panels, and consumer-grade computing hardware. If your load includes active power factor correction (PFC) power supplies, verify tolerance with the equipment manufacturer before deploying; some active-PFC supplies require a sine wave UPS output to operate cleanly.

For larger UPS deployments protecting multi-camera NVR stacks or rack-mounted equipment, review the APC by Schneider Electric portfolio for higher-VA tower or rack-mount models in the Back-UPS and Smart-UPS families. The BN450M-CA is a desktop/non-rack unit — it does not mount in a standard equipment rack. Consult the UPS selection guide for matching VA capacity and topology to your specific load.

Frequently Asked Questions

Q: What is the maximum load the BN450M-CA can support?

A: The BN450M-CA is rated at 450VA / 255W maximum. Size your connected load to stay below 255W of actual power draw for proper runtime and protection.

Q: Is the BN450M-CA rack-mountable?

A: No. The BN450M-CA is a desktop form factor unit and is not rack-mountable. For rack installations, consider a rack-mount model from the APC Smart-UPS or Back-UPS Pro rack series.

Q: What is the transfer time when utility power fails?

A: The BN450M-CA switches to battery in 6 ms typically, with a 10 ms maximum. This is within the tolerance of virtually all standard switching power supply loads.

Q: Is the BN450M-CA compatible with active PFC power supplies?

A: The BN450M-CA uses a square wave output on battery, not a pure sine wave. Active PFC power supplies may not operate correctly on a square wave. Verify compatibility with your specific equipment before deploying.

Q: What input voltage range does the BN450M-CA accept before switching to battery?

A: It accepts input between 88V and 139V on utility power before transferring to battery — a reasonably wide window that reduces unnecessary battery cycling on sites with variable utility quality.

Q: Does the BN450M-CA have any network management interface?

A: Based on available specifications, the BN450M-CA does not include a network management card slot or built-in network interface. Status monitoring is via the front-panel LED display.

James Everett

The BN450M-CA sits in a spot I see frequently in small commercial security installs — you have a compact NVR, a small managed switch, and maybe an access control head-end, and you need a single unit to bridge a 30-second utility blip without any of those devices rebooting mid-recording. At 255W usable capacity and a 6 ms typical transfer time, it handles that scenario cleanly. The square wave caveat is worth flagging upfront for any customer who mentions newer workstations or high-end servers in the same circuit.

Technical Highlights:

• 6 ms / 10 ms Transfer Time: The 6 ms typical / 10 ms max switchover means essentially no load device will brownout during the transfer — most switching supplies tolerate up to 20 ms. That margin matters when the load is a live-recording NVR.
• 88–139V Input Window: A 51-volt acceptance band before battery switchover is wider than some competing units in this class. On a circuit that sags to 95V during HVAC startup, this UPS stays on utility instead of burning battery cycles on every compressor kick.
• Desktop, Non-Rack, 5.7 lbs: At 5.7 lbs and 5.51 inches wide, this unit fits on a shelf or in a small wiring closet without any rack real estate. That matters in retail or small-office installs where there is no rack infrastructure at all.

Deployment Considerations:

• Confirm your total connected load stays under 255W — add up the actual wattage on the nameplate of each device, not their VA ratings. Overloading a standby UPS at the 80–90% mark shortens battery life noticeably over time.
• The square wave output is a hard limitation if any connected device uses an active PFC power supply. Dell and HP workstation PSUs manufactured after roughly 2010 commonly use active PFC — they may produce a whining noise or fail to start on battery from a square wave UPS. This is not a defect; it is a topology mismatch. Use a sine wave UPS for those loads.

The BN450M-CA is the right fit for a small-footprint edge security node — an IP access control panel, a 4–8 channel NVR, and a PoE switch — in a retail branch, small office, or remote surveillance cabinet where there is no rack, no IT staff on-site, and the goal is simply keeping the recording system alive through brief utility interruptions.