APC Smart-ups Ultra Li-ion 10KVA 208V RM UPS with 2 of 5KVA Step Down - SRTL10KRM4UT-5KTF2

APC by Schneider Electric SRTL10KRM4UT-5KTF2 10KVA Online Li-Ion Rack UPS with Dual 5KVA Step-Down Transformers

Overview

The APC Smart-UPS Ultra SRTL10KRM4UT-5KTF2 is a 10KVA/10,000W online double-conversion UPS built for high-density rack environments that need continuous, clean power without the footprint penalty of traditional VRLA-based units. Lithium-ion battery chemistry, an embedded network management card, and a 4U rack profile make this a purpose-built choice for data closets, edge compute deployments, and security infrastructure racks where space and recharge speed both matter. The bundle includes two 5KVA step-down transformers, making it directly usable in mixed 208V/120V environments without additional external transformer hardware.

Key Features

• Online Double-Conversion Topology: The UPS continuously regenerates output power from the inverter — your load never runs on raw utility power. Voltage spikes, frequency drift, and browndowns are all isolated before they reach connected equipment. For NVRs, servers, or access control panels that are sensitive to input quality, this is the topology that eliminates the risk, not just reduces it.
• 10,000W / 10,000VA at Unity Power Factor: A 1:1 watt-to-VA ratio means no derating math. If your rack load is 8,500W, you have 1,500W of true headroom — no hidden capacity loss from power factor penalties common on older UPS designs. Maximum configurable power is also 10,000 VA / 10,000 W.
• Lithium-Ion Battery Pack: Li-Ion chemistry recharges to operational capacity in approximately 1.5 hours — compared to 6–8 hours typical of VRLA alternatives. In environments with frequent utility events (storm-prone regions, older building infrastructure), faster recharge means you're protected again sooner. The 180V battery string and 1,200W charging power support that rapid recovery rate.
• 4U Rack/Tower Convertible Form Factor: Ships with hardware for both rack and tower installation. The rack footprint is 4U — meaningful in dense deployments where every rack unit carries a cost. Tower conversion is included for server rooms that haven't moved to full rack infrastructure yet.
• Embedded Network Management Card 3 (NMC3): Onboard remote management is standard — no expansion card purchase required. Monitor load, battery state, and runtime estimates from your NMS, configure shutdown scripts, and receive SNMP traps or email alerts without additional hardware. This matters operationally: a UPS you can't monitor remotely is a UPS you'll miss an alarm on.
• Dual 5KVA Step-Down Transformers Included: The -5KTF2 suffix designates two bundled step-down transformer units, each rated 5KVA. Mixed-voltage racks — common in security operations centers with both 208V PDUs and 120V edge devices — can be served directly from this single unit without a separate transformer shelf.
• Sine Wave Output at 50/60 Hz: Pure sine wave output, synchronized to mains within ±3 Hz, is required for active power factor correction (APFC) power supplies found in virtually all modern servers and network gear. A simulated or stepped sine wave on these loads causes the APFC circuitry to draw excess current — the pure sine output here avoids that entirely.
• Audible and Visible Prioritized Alarms with LCD Console: The multi-function LCD reports battery state, load percentage, estimated runtime, and fault conditions. Alarms are tiered by severity — a low-battery warning sounds and displays differently from an overload fault, so staff can triage at a glance rather than interpret a single undifferentiated beep.
• IP20 Enclosure Rating: Rated IP20, this unit is designed for protected indoor environments — server rooms, data closets, and equipment rooms with standard access controls. It is not rated for dusty or wet locations; place it in a controlled environment.
• 55 dB Acoustic Level: At 55 dB, this unit is audible in a quiet server room but within the range expected for high-density power equipment. Factor this into deployments in noise-sensitive areas (e.g., a UPS closet adjacent to an open office).
• Connectivity Expansion Slot: Beyond the embedded NMC3, an available expansion slot supports additional interface cards — useful if your site requires dry contacts, environmental monitoring, or a secondary management interface.

Integration and Compatibility

The SRTL10KRM4UT-5KTF2 accepts 208V AC single-phase input (with 240V AC noted as an alternate input voltage), making it compatible with standard 208V branch circuits found in commercial and data center environments. Output is 208V AC single-phase, with the bundled step-down transformers handling 120V load requirements. The serial port, USB port, and embedded NMC3 provide multiple integration paths for building management systems, DCIM platforms, and shutdown agents. Operating altitude is rated to 10,000 ft; storage altitude extends to 50,000 ft. Operating relative humidity is 0–95% non-condensing. For deployments in the power protection category, the embedded NMC3 and expansion slot provide the management depth that enterprise and network infrastructure teams typically require. When sizing this unit for a network video recorder rack or a physical security operations center, account for the 4U height and the weight of the shipping package (397.9 lb / 180.5 kg) when planning rack and floor loading. Review your UPS and power supply architecture against the 10KW capacity ceiling — if your rack grows beyond that, a second unit or a larger frame will be required. For broader context on power resilience planning, consult a power planning guide appropriate to your load profile.

Frequently Asked Questions

Q: What is the battery recharge time on the SRTL10KRM4UT-5KTF2?

A: The typical recharge time is 1.5 hours, supported by a 1,200W battery charging power rating and a 180V Li-Ion battery string. This is significantly faster than VRLA alternatives, which typically require 6–8 hours for a full recharge.

Q: Does the SRTL10KRM4UT-5KTF2 include a network management card?

A: Yes. An embedded Network Management Card 3 (NMC3) is built in — no additional purchase required. It provides SNMP, remote monitoring, and shutdown scripting capability out of the box. An additional expansion slot is also available for supplementary interface cards.

Q: What input voltage does the SRTL10KRM4UT-5KTF2 require?

A: The primary input is 208V AC single-phase at 50 or 60 Hz. A 240V AC single-phase input is also listed as a supported voltage. Verify your branch circuit voltage before installation.

Q: What are the two 5KVA transformers included in this bundle used for?

A: The -5KTF2 suffix designates two 5KVA step-down transformer units included with the UPS. These allow 120V loads to be powered from the 208V output — useful in mixed-voltage racks without requiring a separate transformer shelf.

Q: What is the UPS topology of the SRTL10KRM4UT-5KTF2?

A: It uses an online double-conversion topology, meaning connected loads run continuously from the inverter. Utility power is constantly converted to DC and back to AC, so there is zero transfer time on a utility failure and complete isolation from input power quality issues.

Q: What rack space does the SRTL10KRM4UT-5KTF2 occupy?

A: The unit occupies 4U of rack space. It is also convertible to tower orientation using the included kit, for non-rack deployments.

Karl Wilson

The SRTL10KRM4UT-5KTF2 stands out in the 10KVA class specifically because of its Li-Ion chemistry paired with the 1,200W charging power — that 1.5-hour recharge is the real operational differentiator here, not just a marketing number. In a facility where utility brownouts or generator transfers happen regularly, a VRLA unit sitting at 30% state-of-charge four hours after an event is a liability. This unit is back to full protection faster than most staff finish their post-event checklist.

Technical Highlights:

• Unity Power Factor (10KW = 10KVA): No derating required. A 10,000W load draws the full rated capacity with zero wasted VA headroom — critical when sizing against a real rack load budget.
• Embedded NMC3: Onboard management without an add-on card means one fewer procurement step and one fewer card failure mode. SNMP traps and remote shutdown scripting are available from day one.
• Bundled Dual 5KVA Step-Down Transformers: The -5KTF2 configuration addresses a real field problem — mixed 208V/120V racks — without requiring a separate transformer shelf or additional PDU hardware. That's rack space and procurement complexity eliminated upfront.

Deployment Considerations:

• At 397.9 lb shipping weight (180.5 kg), floor loading and two-person lift procedures are non-negotiable. Confirm rack rail and floor ratings before scheduling delivery — this is not a one-person install.
• IP20 enclosure rating means this unit requires a controlled indoor environment. It is not suitable for telecommunications huts, outdoor enclosures, or environments with significant airborne particulate. Plan your install location accordingly.

This configuration is best suited to a security operations center or edge data room running a mixed 208V/120V rack — NVRs, access control servers, and network gear on a single 10KW bus with transformer-fed 120V outlets and embedded management. The 1.5-hour Li-Ion recharge makes it a strong fit for facilities that can't tolerate extended unprotected windows between utility events.