Middle Atlantic Lg-li UPS 1.0VA 120V - UPS-LL-1100RT

Middle Atlantic UPS-LL-1100RT 1100VA Line-Interactive Rackmount UPS

Overview

The Middle Atlantic UPS-LL-1100RT is a 1100VA line-interactive rackmount UPS built for professional AV and security racks where power conditioning and battery backup need to fit inside a standard 19-inch enclosure without consuming excessive rack space. At 3.5 inches tall (2U), it slides into tight rack builds without displacing critical gear. This is not a consumer standby unit — the line-interactive topology actively regulates voltage during brownouts and sags before falling back to battery, which matters for NVRs, switches, and IP camera systems that can corrupt storage or drop streams during grid instability.

The UPS-LL-1100RT (often searched as UPS LL 1100RT) accepts 120 VAC input at up to 12 amps and distributes power across 8 NEMA 5-15R receptacles — enough to cover an NVR, a managed PoE switch, a fiber converter, and a couple of ancillary devices in a single rack system without daisy-chaining power strips.

Key Features

• 1100VA / Line-Interactive Topology: At 1100VA, this unit covers mid-density security and AV rack loads. More importantly, line-interactive topology corrects overvoltages and undervoltages through the autotransformer before switching to battery — so your NVR and switch aren't riding raw grid power every time a HVAC compressor kicks on down the hall. Pure standby UPS designs skip this step and transfer to battery on every event, accelerating battery wear and risking brief transfer-time glitches.
• 8 NEMA 5-15R Outlets: Eight receptacles across the rear panel give you enough ports for a full rack stack — NVR, managed switch, fiber media converter, access controller, and spare — without adding a separate PDU. All outlets are 5-15R, so standard IEC-to-NEMA power cords from rack equipment connect directly.
• 1.5U / 3.5-Inch Height Profile: At 3.5 in (8.9 cm) tall and 17.2 in (43.7 cm) wide, the UPS-LL-1100RT fits a standard 19-inch rack bay and consumes minimal vertical space. 16-inch depth (40.6 cm) is compatible with most mid-depth rack enclosures — minimum mounting depth required is 17.6 inches, so verify shallow-depth or wall-mount racks before ordering.
• 120 VAC / 12-Amp Input: Draws up to 12 amps from a standard 15-amp circuit, leaving 3-amp headroom to avoid tripping a shared breaker. In installations where the rack is on a dedicated 20-amp circuit, you have comfortable margin to run at full rated load.
• Rackmount Form Factor: Designed for 19-inch rack installation, this UPS ships ready to mount — no desktop adapter or additional hardware needed for standard rack deployment. The 17.2-inch width fits within standard rack rail spacing.
• Commercial-Grade Power Distribution: Positioned in Middle Atlantic's rack power line, the UPS-LL-1100RT is built to the specifications of professional integrators deploying rack systems in commercial and enterprise environments rather than the consumer or prosumer market.

Integration & Compatibility

The UPS-LL-1100RT integrates into any Middle Atlantic rack power deployment and is well-matched to mid-density network video recorders and managed PoE switches that form the backbone of IP security systems. Because it outputs standard 120 VAC on NEMA 5-15R receptacles, it is compatible with virtually all rack-mounted security and AV equipment shipped for the North American market. Note that this unit is not available internationally — it is designed for 120 VAC infrastructure only and is not dual-voltage.

The line-interactive topology is compatible with active PFC (power factor corrected) power supplies common in modern NVRs and servers, though integrators should verify load wattage against the unit's rated capacity when specifying for high-density GPU or compute workloads. For UPS and power backup selection guidance, confirm the connected load in watts (not just VA) against the unit's rated output before finalizing the design. Consult a power management planning guide for calculating runtime at specific load percentages.

TAA compliance is not applicable on this SKU — federal procurement officers should note this before specifying for government projects. Country of origin is China.

Frequently Asked Questions

Q: What is the topology of the UPS-LL-1100RT and why does it matter?

A: The UPS-LL-1100RT uses a line-interactive topology, which means it actively corrects input voltage fluctuations — brownouts and overvoltages — using an autotransformer before the load ever sees them. It only switches to battery for outright power failures. This is a step above pure standby designs, which transfer to battery on every event, and is the right choice for NVRs and network switches that are sensitive to input voltage quality.

Q: How many outlets does the UPS-LL-1100RT have and what type are they?

A: The UPS-LL-1100RT provides 8 NEMA 5-15R receptacles. These accept standard three-prong 15-amp plugs used on most rack-mounted AV and security equipment in North America.

Q: Will the UPS-LL-1100RT fit in a standard 19-inch equipment rack?

A: Yes. The unit is 17.2 inches wide and 3.5 inches tall (2U), designed for standard 19-inch rack mounting. Its depth is 16 inches, but the minimum rack mounting depth required is 17.6 inches — verify your enclosure depth before ordering, particularly for shallow-depth or wall-mount racks.

Q: Is the UPS-LL-1100RT TAA compliant for government procurement?

A: No. The UPS-LL-1100RT is not TAA compliant. Federal and government procurement projects requiring TAA-compliant power equipment should evaluate alternative SKUs.

Q: Can the UPS-LL-1100RT be used internationally or on 240V systems?

A: No. This unit is rated for 120 VAC input only and is not available internationally. It is designed exclusively for North American 120V infrastructure.

Q: What circuit breaker size does the UPS-LL-1100RT require?

A: The unit draws up to 12 amps at full load, so a standard 15-amp dedicated circuit provides adequate capacity. A 20-amp dedicated circuit offers more comfortable margin and is recommended where available.

Marty Allison

The UPS-LL-1100RT earns its place in commercial security racks specifically because of the line-interactive topology — not just the battery backup. I spec this unit on projects where input power quality is suspect: older commercial buildings, shared circuits, or facilities where HVAC and industrial equipment create brownout conditions that a pure standby UPS would transfer to battery on constantly. At 1100VA with 8 NEMA 5-15R outlets, it covers a standard mid-density NVR-plus-switch rack stack without a separate PDU.

Technical Highlights:

• Line-Interactive Voltage Regulation: Corrects sags and surges before reaching connected equipment — critical for NVRs with spinning drives where voltage instability accelerates hardware failures.
• 8 x NEMA 5-15R Outlets: Enough receptacles to cover an NVR, managed PoE switch, fiber converter, and access controller from a single unit — no power strip daisy-chains needed in the rack.
• 2U / 3.5-Inch Profile: Fits inside standard 19-inch rack enclosures and keeps the power infrastructure inside the same rack as the security gear — cleaner install, easier service.

Deployment Considerations:

• Minimum rack mounting depth is 17.6 inches — measure before ordering if you're working with wall-mount or shallow-depth enclosures. The unit body is 16 inches, but mounting hardware adds clearance requirements.
• This SKU is 120 VAC only and not TAA compliant — flag both items early if you're bidding on government or federal contracts where TAA is required or if the site runs 240V infrastructure.

Best fit: mid-size commercial security deployments — retail, office, or light industrial sites — where the rack runs an NVR, managed switch, and a handful of ancillary devices on a 120V circuit and needs active voltage conditioning, not just battery backup.