APC by Schneider Electric SMTL3000RM2UCNC Smart-UPS 3kVA Lithium-Ion 2U Rackmount Line-Interactive UPS
Overview
The APC Smart-UPS SMTL3000RM2UCNC is a 3kVA/2700W line-interactive UPS built around a lithium-ion battery and designed for 2U rack deployment in IT closets, network rooms, and security infrastructure environments. Where traditional VRLA-battery UPS units demand replacement every three to five years, the lithium-ion chemistry here offers a substantially longer service life — reducing the total cost of ownership in installations where battery swap labor is expensive or disruptive. If you are speccing power protection for a rack of network video recorders, edge servers, or PoE switch infrastructure, this unit fits the bill without consuming the rack space of a heavier, taller chassis.
Line-interactive topology means the SMTL3000RM2UCNC continuously conditions incoming power through its automatic voltage regulator (AVR), correcting brownouts and overvoltages between 82V and 144V without switching to battery. This matters in facilities where utility power sags regularly — warehouses, older commercial buildings, industrial campuses — because every unnecessary battery discharge accelerates aging. The AVR keeps the load on clean conditioned utility power while the battery stays reserved for actual outages.
Key Features
- 3kVA / 2700W Output Capacity: Enough headroom for a fully populated 2–4U NVR, a managed PoE switch, and ancillary gear simultaneously. At 2700W true output, you are not working with a derated capacity number — plan your load at 80% utilization (2160W) to stay within best-practice guidelines and protect runtime.
- Lithium-Ion Battery Chemistry: Li-ion cells operate efficiently across a wider temperature range than VRLA, charge faster after a discharge event, and are rated for significantly more charge cycles. For security integrators maintaining remote sites, fewer truck rolls for battery replacements translates directly to reduced service costs over the system lifecycle.
- True Sine Wave Output: Active PFC power supplies — standard in enterprise servers, managed switches, and modern NVRs — require a true sine wave during battery operation. A stepped-approximation or simulated sine wave UPS will cause PFC supplies to fault or run hot. The SMTL3000RM2UCNC delivers pure sine wave on battery, so your load behaves identically whether running on utility or backup power.
- 96% Operating Efficiency: At 96% efficiency, heat dissipation and operating costs are minimized. In a rack with multiple devices, every percentage point of UPS inefficiency becomes waste heat that your HVAC must remove. This rating keeps the thermal load manageable in tightly enclosed network closets.
- Wide Input Voltage Window (82V–144V): The AVR handles a 62V swing without touching the battery. Sites with notoriously unstable utility feeds — rural installs, shared-service buildings, construction-adjacent deployments — will see fewer unnecessary battery events and extended battery life as a result.
- 8 AC Outlets (NEMA 5-15R and NEMA 5-20R mix): The outlet complement covers both standard 15A and 20A loads from a single UPS. Mixed outlet types mean you can connect higher-draw appliances (some server PSUs, larger switches) on 5-20R ports without adapters.
- 55 dB Noise Level: Quieter than many comparable rackmount UPS units, which is relevant in open-office IT closets or customer-facing equipment rooms where fan noise accumulates across multiple devices.
- 459J Surge Energy Rating: Provides meaningful protection against transient spikes on the input line — relevant for any installation without upstream whole-facility surge suppression.
- USB and Serial Interfaces: Both USB and serial management ports are present for integration with UPS management software, enabling graceful OS shutdown sequencing, runtime monitoring, and event logging without requiring a separate network management card for basic supervision.
- 2U Rackmount Form Factor: Occupies two rack units — compact enough to fit into partially populated racks alongside security appliances without consuming valuable U-space in smaller enclosures.
Integration and Compatibility
The SMTL3000RM2UCNC ships at 120V input/output, making it specific to North American electrical infrastructure. Verify your rack's PDU or circuit is fed from a 120V 20A (or paired 15A) circuit before ordering — the output wattage at 2700W on 120V draws approximately 22.5A at full load, which typically requires a dedicated 30A circuit or careful load planning on a 20A feed. For larger deployments requiring higher-density power protection, consider evaluating higher-kVA models in the APC Smart-UPS line.
USB and serial connectivity pairs with APC PowerChute software for automated shutdown of connected servers and NVRs during extended outages — a critical feature for managed switch and recorder infrastructure where uncontrolled power loss can corrupt active write operations. For environments requiring SNMP-based monitoring and integration with a network operations center, APC's optional network management card slot (verify NMC compatibility with this model before ordering) extends remote visibility.
This unit integrates naturally into rack systems housing IP security cameras and their supporting infrastructure. Review the UPS and power protection category for complementary options when planning a multi-rack deployment. For guidance on sizing backup power for camera and recording systems, consult a power protection planning guide to match runtime requirements against load profiles.
Frequently Asked Questions
Q: What is the difference between the SMTL3000RM2UCNC and a standard VRLA-battery Smart-UPS of the same capacity?
A: The SMTL3000RM2UCNC uses lithium-ion battery chemistry instead of traditional valve-regulated lead-acid (VRLA) batteries. Li-ion cells support more charge cycles, charge faster after a discharge, and typically offer a longer service life — reducing replacement frequency and associated labor costs in commercial installations.
Q: Does the SMTL3000RM2UCNC output a true sine wave during battery operation?
A: Yes. The unit produces a true sine wave output on battery, which is required for servers, NVRs, and managed switches equipped with active PFC power supplies. Using a simulated sine wave UPS with PFC loads can cause the load to fault or run abnormally hot.
Q: What input voltage range does the SMTL3000RM2UCNC support without switching to battery?
A: The automatic voltage regulator (AVR) conditions incoming power between 82V and 144V without battery involvement. Only voltages outside this 62V window trigger a battery transfer, which significantly extends battery life on sites with variable utility power quality.
Q: How many outlets does the SMTL3000RM2UCNC provide and what types?
A: The unit provides 8 AC outlets total — a mix of NEMA 5-15R (standard 15A) and NEMA 5-20R (20A) receptacles — covering both standard and higher-draw connected equipment without requiring outlet adapters.
Q: What management interfaces are available on the SMTL3000RM2UCNC?
A: The unit includes both USB and serial management ports for integration with UPS management software such as APC PowerChute. These enable graceful shutdown sequencing, runtime monitoring, and event logging. For SNMP-based network monitoring, verify whether an optional network management card is compatible with this model.
Q: Is the SMTL3000RM2UCNC suitable for a 15A utility circuit?
A: At full 2700W output on 120V, the unit draws approximately 22.5A — exceeding a standard 15A circuit. A dedicated 20A or 30A circuit is strongly recommended. In practice, most integrators plan UPS load at no more than 80% of rated capacity, which still approaches 18A on 120V and warrants a 20A dedicated feed at minimum.
The SMTL3000RM2UCNC is the unit I reach for when a client needs serious rackmount power protection in a 2U footprint and wants to stop scheduling annual battery replacement visits. The 96% efficiency rating is not a marketing number to gloss over — in a rack running 24/7, the difference between a 90% and 96% efficient UPS at 2000W continuous load is roughly 120W of waste heat that either your HVAC absorbs or accumulates in an already-warm IDF closet.
Technical Highlights:
- 82V–144V AVR Window: A 62V correction range without battery engagement is genuinely broad. On sites I have worked with unstable utility feeds — strip malls, older industrial facilities — this AVR range means the battery stays charged and healthy rather than cycling through brownout events every other day.
- True Sine Wave on Battery: Every modern NVR and managed switch I specify uses an active PFC supply. The sine wave output is not optional for this load class — it is a hard requirement, and this unit delivers it.
- Lithium-Ion Chemistry: For remote or hard-to-access installs, the extended cycle life of Li-ion versus VRLA is a real operational advantage. Fewer unplanned maintenance visits to swap batteries that have prematurely sulfated means lower total cost over a five-year contract.
Deployment Considerations:
- Circuit sizing is the most common pre-installation oversight: at full 2700W on 120V the draw hits ~22.5A. Wire this to a dedicated 30A circuit; do not daisy-chain it off a shared 20A panel leg already serving other rack equipment.
- The 55 dB noise rating is moderate — acceptable in a dedicated equipment room but noticeable in a quiet office environment where the rack lives near workstations. Factor this in for open-plan or customer-facing installations.
This UPS is a strong fit for security infrastructure racks in healthcare facilities, financial branch offices, and municipal government installations where utility power quality is inconsistent and battery maintenance labor is a real budget line — the Li-ion chemistry directly attacks that cost center.
