APC Smart-ups 3000VA RM 4U 120V Shipbord - SMX3000RMX93

APC by Schneider Electric SMX3000RMX93 3000VA 4U Rackmount Line-Interactive UPS

Overview

The APC by Schneider Electric SMX3000RMX93 is a 3000VA / 2700W line-interactive uninterruptible power supply built for demanding rack environments — surveillance head-end rooms, network operations closets, server racks, and shipboard electrical installations where stable, conditioned power is non-negotiable. At 4U of rack height, it delivers a genuine sine wave output and a wide 70–153V input operating window, meaning it can ride through browndowns and voltage sags that would force lesser units onto battery far too early. If your critical loads are NVRs, managed switches, or edge compute nodes, the SMX3000RMX93 keeps them running without choking on poor utility power quality.

Paired with the power protection category of commercial-grade UPS solutions, and drawing from the broader APC by Schneider Electric catalog, this unit sits squarely in the heavy-end of rackmount line-interactive UPS hardware — sized for multi-camera NVR stacks or mixed switch-and-server loads rather than lightweight desktop deployments.

Key Features

• 2700W / 2.88kVA True Sine Wave Output: Pure sine wave means sensitive switching power supplies and active-PFC loads (common in modern NVRs and servers) stay stable under all conditions — no clipped waveform artifacts that can degrade or shorten hardware life during battery operation.
• Line-Interactive Topology with 2ms Transfer Time: Line-interactive architecture handles routine voltage fluctuations using the AVR (automatic voltage regulation) stage without touching the battery at all. When a true outage hits, the 2ms transfer to battery is fast enough that virtually all ATX and server power supplies will bridge the gap without a power cycle.
• Wide 70–153V Input Range: A 70V minimum input threshold is notably low — useful in environments with weak or variable utility feeds, generator-sourced power, or shipboard electrical systems where sustained undervoltages are common. The unit stays on utility power across that full range, preserving battery cycles for genuine outages.
• 50/60Hz Auto-Sensing Input: Accepts both 50Hz and 60Hz input frequencies, which matters in international deployments or shipboard installations where the power frequency may differ from the standard 60Hz US grid.
• NEMA L5-30P Input Plug: The twist-lock L5-30P input connector means this unit wires into a dedicated 30A circuit — appropriately matched to a 2700W runtime load. Plan your PDU or panel circuit accordingly; a standard 20A NEMA 5-20R outlet will not connect to this unit.
• NEMA 5-15R Output Outlets: Standard 5-15R outlets on the output side mean most rack-mounted equipment with standard power cords connects directly without adapters.
• Emergency Power Off (EPO): The SMX3000RMX93 includes a hardwired EPO input — a requirement in many data center and commercial facilities for fire suppression systems or safety shutdowns. This is often a spec that eliminates units from consideration in code-compliant installs, so verify it here before specifying a different model.
• 55 dB Noise Level: At 55 dB, this unit is audible in a quiet office but standard for a loaded 4U UPS. In a dedicated server room or IDF closet it's a non-issue; for open-plan or noise-sensitive environments, plan accordingly.
• Low Battery Audible Alarm: The unit provides an audible alert as battery approaches depletion, giving operators time to initiate an orderly shutdown or transfer before runtime expires. This is distinct from a continuous alarm — the unit is not continuously loud during normal operation.
• Non-Detachable Power Cord: The input power cord is hardwired to the unit. This simplifies installation (no cord to source separately) but means field replacement of a damaged cord requires a service call rather than a quick swap — factor this into maintenance planning for remote or shipboard deployments.

Integration & Compatibility

The SMX3000RMX93 is designed for integration into 4U rack spaces with a twist-lock L5-30P 30A input feed. Output connectivity via NEMA 5-15R outlets supports a broad range of rack-mounted and tower equipment. The EPO terminal allows integration with facility-level shutdown systems. For deployments pairing this UPS with network video recorders or PoE switch stacks, verify that the total connected load does not exceed 2700W at the output — at 90% load factor that's a comfortable operating ceiling for most mixed NVR-plus-switch configurations. Review your UPS and power conditioning selection against your actual VA and wattage draw, factoring power factor of connected loads. For planning rackmount power infrastructure, see the UPS runtime and load sizing guide to right-size runtime against connected equipment.

Frequently Asked Questions

Q: What is the output waveform of the SMX3000RMX93 — stepped approximation or true sine wave?

A: The SMX3000RMX93 produces a true sine wave output on battery. This matters for loads with active power factor correction (active-PFC) power supplies, which are common in modern servers and NVRs — stepped approximation waveforms can cause instability or damage in those loads.

Q: What input plug does the SMX3000RMX93 use, and what circuit does it require?

A: It uses a NEMA L5-30P twist-lock plug, which requires a dedicated 30A, 120V circuit. This is not compatible with standard 15A or 20A NEMA outlets. Confirm your rack power feed includes a 30A circuit before ordering.

Q: Does the SMX3000RMX93 include an Emergency Power Off (EPO) connection?

A: Yes. The SMX3000RMX93 includes an EPO input, allowing integration with facility or building safety shutdown systems — a common code requirement in data centers and certain commercial installations.

Q: How fast does the SMX3000RMX93 switch to battery power when utility power fails?

A: The transfer time is 2 milliseconds. At that speed, nearly all standard ATX and server power supplies will bridge the gap without a power interruption to connected equipment.

Q: What is the lowest input voltage the SMX3000RMX93 can accept without switching to battery?

A: The minimum input operating voltage is 70V. Below that threshold the unit switches to battery. This wide range makes it well-suited for weak utility feeds, generator power, or shipboard electrical systems where sustained undervoltages are common.

Q: Is the input power cord removable or replaceable in the field on the SMX3000RMX93?

A: No — the power cord is non-detachable (hardwired to the unit). Field replacement of a damaged cord requires a service event rather than a simple cord swap. Factor this into your maintenance and serviceability planning, especially for remote or shipboard installations.

Eden Phillips

The spec that stands out most to me on the SMX3000RMX93 is the 70V minimum input operating voltage — that's an unusually low floor for a line-interactive unit of this class. In shipboard, generator, or weak-utility deployments where sustained browndowns to 80–90V are common, most line-interactive UPS units start drawing down battery well before the grid actually fails. This one stays on utility power through those sags, which means the battery stays healthy for the real outages rather than being cycled on every voltage dip.

Technical Highlights:

• True Sine Wave Output: At 2700W / 2.88kVA, this unit delivers a clean sine wave on battery — critical for any load running active-PFC power supplies. Rack-mounted NVRs, managed PoE switches, and edge servers all commonly use active-PFC; a stepped-approximation waveform from a cheaper UPS can trigger shutdown or hardware fault on those loads.
• 2ms Transfer Time: Line-interactive with 2ms transfer is fast enough that connected equipment sees no power interruption in practice. The vast majority of ATX-spec power supplies hold output for 16–20ms through a transfer event — 2ms leaves a large margin.
• EPO Input: The hardwired EPO terminal on the SMX3000RMX93 is not a feature you'll find on every line-interactive unit at this price tier. For any installation where the AHJ or facility manager requires code-compliant emergency shutoff integration — data centers, server rooms, and certain marine applications — this eliminates the need for an external relay shim.

Deployment Considerations:

• The NEMA L5-30P input is a 30A twist-lock — verify your rack PDU or panel circuit is sized and terminated correctly before the unit arrives on site. A missing 30A circuit on install day is a common avoidable delay on this class of UPS.
• The non-detachable input cord is the one serviceability watch-out here: if the cord is damaged in a marine or industrial environment, you're not doing a five-minute swap. Plan for a spare unit or a service agreement if the deployment is in a hard-to-reach location.

The SMX3000RMX93 is the right specification for shipboard security head-end racks or generator-backed surveillance infrastructure where the input voltage regularly sags into the 80–100V range — the wide 70V input floor combined with true sine wave output and EPO makes it a solid fit for any deployment where those three requirements overlap.