APC by Schneider Electric SRYL10K20XLT24 10KW Scalable Modular Tower UPS
Overview
The APC Smart-UPS Modular Ultra SRYL10K20XLT24 is a 10KW tower UPS built for IT environments that need room to grow without a forklift upgrade. Starting at 10KW and scaling to 20KW within the same enclosure, it delivers N+1 power module redundancy and a pure sine wave output on a lithium-ion battery platform — a combination that covers both critical uptime requirements and long-term total cost of ownership in a single tower footprint.
At 473.1 lb and 47.2 inches tall, this is a floor-standing unit sized for a dedicated equipment room or data center row-end position — not a closet shelf install. Plan floor loading and pathway clearance before delivery. The black and silver chassis integrates with standard commercial server room aesthetics without requiring a rack.
Key Features
- 10KW base capacity, scalable to 20KW: The modular architecture lets you commission at 10KW and add power modules as load grows — no new UPS purchase, no migration downtime. For a deployment that starts with one server rack and adds a second within 18 months, this avoids the buy-two-UPS problem entirely.
- N+1 redundant power modules: A failed power module does not drop the load — the redundant module carries the full capacity while the failed unit is swapped. This is the architecture that justifies a single UPS on a critical load rather than a parallel pair of smaller units.
- Pure sine wave output: Active PFC power supplies in modern servers, storage arrays, and networking gear require a true sine wave UPS to operate correctly on battery. A stepped approximation (simulated sine wave) can cause PFC supplies to fault or shut down under transfer. The SRYL10K20XLT24 outputs a pure sine wave on battery — the correct match for any current enterprise compute load.
- Lithium-ion battery chemistry: Li-Ion cells carry a longer service life and significantly lower weight-per-kilowatt-hour than VRLA lead-acid. In a 10KW+ unit, this translates to fewer battery replacement cycles over the system's operational life and reduced floor loading compared to an equivalent lead-acid design — both relevant considerations when this unit will sit in place for a decade or more.
- 208/240V input at 208V AC: Designed for the 208V AC power distribution standard used in North American data centers and commercial electrical panels. If your facility runs 120V branch circuits only, this unit requires a dedicated 208V feed — verify with your facilities team before ordering.
- 120V AC output: The 120V output voltage serves standard North American rack PDUs and equipment without requiring step-down transformers. Confirm your PDU and equipment input ratings match this output before deployment.
- Tower form factor: The standalone tower chassis does not require a rack — useful in equipment rooms where rack space is fully committed or where the UPS needs to sit beside rather than inside a rack enclosure. At 47.2 inches, it occupies roughly the footprint of a standard server tower.
Integration and Compatibility
The SRYL10K20XLT24 is designed for commercial and light industrial power environments operating on 208V AC distribution. Its 120V AC output is compatible with standard North American rack PDUs and directly powered equipment. The lithium-ion battery platform and modular expansion architecture are consistent with APC's Smart-UPS Modular Ultra line, allowing future capacity additions without replacing the base unit.
For enterprise deployments, pair this UPS with a managed rack PDU to gain per-outlet monitoring and remote load control downstream of the UPS. If you are building out a full UPS infrastructure for a new equipment room, account for the 208V dedicated circuit requirement and floor load capacity (473.1 lb unloaded) in your facilities planning. For guidance on sizing UPS capacity to your actual load, see our power protection planning guide.
Runtime at full 10KW load depends on battery module configuration and is not specified in the available data — contact your facilities engineer or request a runtime curve from the manufacturer for load-specific sizing. For deployments requiring extended runtime, additional battery modules may be available within the modular platform.
Frequently Asked Questions
Q: What is the input voltage requirement for the SRYL10K20XLT24?
A: The SRYL10K20XLT24 requires a 208V AC input. This is a dedicated commercial power feed, not a standard 120V branch circuit. Verify that your facility has a 208V distribution panel and appropriately sized breaker before ordering.
Q: What output voltage does the SRYL10K20XLT24 deliver?
A: The unit outputs 120V AC — compatible with standard North American rack PDUs and directly powered equipment. If your load requires 208V output, this is not the correct model; review other configurations in the Smart-UPS Modular Ultra family.
Q: Can the SRYL10K20XLT24 scale beyond 10KW?
A: Yes. The modular architecture supports scaling to 20KW within the same tower enclosure by adding power modules. This avoids a full UPS replacement as your load grows, which is one of the primary reasons to specify a modular platform over a fixed-capacity unit.
Q: What battery technology does the SRYL10K20XLT24 use?
A: It uses lithium-ion (Li-Ion) batteries. Compared to traditional VRLA lead-acid chemistry, Li-Ion offers a longer service life and lower weight per kilowatt-hour of capacity — relevant for both replacement cycle planning and floor load calculations in a unit of this size.
Q: Does the SRYL10K20XLT24 output a pure sine wave?
A: Yes. The unit produces a pure sine wave output on battery. This is required for compatibility with active PFC power supplies used in modern servers, storage, and networking equipment. A simulated or stepped sine wave UPS can cause PFC-equipped devices to fault on battery transfer.
Q: How heavy is the SRYL10K20XLT24, and does it require rack mounting?
A: The unit weighs 473.1 lb and stands 47.2 inches tall as a tower (floor-standing) chassis. It does not require a rack. Plan for floor reinforcement review in raised-floor data centers and ensure adequate clearance for service access on all sides.
The SRYL10K20XLT24 is one of the few tower-format UPS platforms where the N+1 redundancy argument actually holds up without building a parallel UPS pair — the modular power architecture means you have a hot-swappable redundant module inside a single enclosure at 10KW, and you can push that to 20KW later without a new procurement cycle. That is the spec that changes the facilities conversation on this unit.
Technical Highlights:
- Li-Ion battery platform: At 473.1 lb, this unit is already heavy — a comparable VRLA lead-acid design at 10KW+ would be significantly heavier. Li-Ion's higher energy density is not just a runtime story; it directly affects floor loading calculations and battery replacement logistics over the life of the installation.
- Pure sine wave output: Every modern server with an active PFC supply needs this. Specifying anything other than a pure sine wave UPS on a dense compute load is a support call waiting to happen — PFC supplies can reject a stepped waveform on battery transfer, and the failure mode is abrupt load shutdown rather than a graceful handoff.
- 208V AC input / 120V AC output: The voltage step-down is built in — 208V feed from your panel, 120V to your PDUs. No external transformer, no additional single-point-of-failure in the power path. Confirm your PDU fleet is 120V-input before finalizing the design; a 208V-input PDU on this output is a mismatch.
Deployment Considerations:
- At 47.2 inches tall and 473.1 lb, delivery and positioning require a pallet jack or similar equipment and a clear path from loading dock to equipment room — do not assume standard IT delivery handles this. Coordinate with facilities before the unit ships.
- Runtime at full 10KW is not specified in the available data. Do not size this unit for a specific runtime SLA without obtaining the manufacturer's runtime curve for your actual load profile and battery module configuration.
This unit is well-matched to a mid-size equipment room buildout — two to four server racks at 208V commercial power, where the requirement is N+1 redundancy without the complexity of a parallel UPS pair, and where the load may grow within a 24-month horizon. The 20KW scalability ceiling covers most scenarios in that bracket without a platform change.
