APC by Schneider Electric SRT1500RMXLAUS 1500VA Rack-Mount Online UPS
Overview
The APC by Schneider Electric SRT1500RMXLAUS is a 1500VA / 1350W rack-mount online UPS designed for IT closets, security head-end rooms, and edge deployments where clean, conditioned power is non-negotiable. This TAA-compliant unit targets federal procurement and government-contract environments where supply-chain compliance is a hard requirement. With a 2U rack footprint measuring 3.35" H x 17.0" W x 20.0" L, it fits comfortably in standard 19-inch racks without consuming excessive rack unit space. The six NEMA 5-15R output receptacles, 6-foot NEMA 5-15P input cord, and dual APC SmartSlot accessory bays make SRT1500RMXLAUS a practical anchor for mid-density edge power distribution.
Key Features
- 1500VA / 1350W Power Capacity: 1350 watts of true online double-conversion power means every connected device runs off inverted battery output continuously — not just during a detected outage. Grid noise, sags, and surges never reach your equipment. Size this for NVR systems, PoE switches, and access control servers totaling under 1350W to stay below full-load runtime limits.
- Runtime at Load — Plan Around Real Numbers: At half load (675W), you get 13.1 minutes of runtime — enough to complete a controlled shutdown or ride through a utility switchover. At full load (1350W), runtime drops to 4.6 minutes. That gap is significant: if you're running a fully loaded rack, build your shutdown scripts around under 5 minutes, not the half-load figure on the marketing sheet.
- Six NEMA 5-15R Output Receptacles: Six individually accessible 120V outlets distribute power across multiple devices without requiring outlet strips or adapters. For a typical head-end cabinet running an NVR, managed switch, access control panel, and intercom gateway, six outlets is usually sufficient — though higher-density deployments may need a secondary PDU on the same UPS output.
- TAA Compliance: The TAA-compliant designation satisfies Trade Agreements Act requirements for federal, state, and municipal contracts. If you're bidding a government security project under GSA schedule or a state cooperative contract, this box checks a procurement requirement that non-TAA APC variants cannot fulfill.
- APC SmartSlot x2 — Expand Without Replacing the UPS: Two SmartSlot accessory bays let you add network management (AP9630 SNMP card), environmental monitoring (AP9631), or legacy serial communications (AP9620) without swapping out the base unit. For managed deployments where remote power cycling, SNMP alerts, or temperature/humidity monitoring matter, slot an AP9630 and this UPS becomes a remotely manageable node — no truck roll required for a power event investigation.
- Multi-Interface Connectivity: The RJ50 APC Data Port, USB port, and Simple Signaling Port cover the range from legacy serial-managed environments to modern USB-direct shutdown clients. Most current UPS management software (PowerChute) connects via USB; the RJ50 Data Port supports older APC management infrastructure still common in government and healthcare facilities.
- RBC155 Battery Replacement: The user-replaceable RBC155 battery kit keeps maintenance in-house — no service contract required to swap a degraded battery pack. This matters in facilities where outside service access is restricted or credentialing takes weeks to arrange.
- LCD Display: The front-panel LCD provides at-a-glance load percentage, battery charge, input/output voltage, and estimated runtime — useful during initial commissioning and for periodic visual health checks without needing network management software running.
Integration & Compatibility
The SRT1500RMXLAUS integrates directly with APC's PowerChute Business Edition and Network Shutdown software via USB or the optional network management cards. The AP9630 SNMP card (SmartSlot-compatible) enables full SNMP v1/v2c/v3 management, email alerting, and integration with building management systems or DCIM platforms. For physical security integrators deploying Milestone XProtect, Genetec Security Center, or similar VMS platforms, PowerChute can trigger graceful NVR shutdown on battery, preventing database corruption on extended outages. The two SmartSlot bays support simultaneous installation of a network card and an environmental monitoring card — a common configuration in telecom rooms and IDF closets where both remote management and temperature monitoring are required.
The NEMA 5-15P input plug connects to a standard 120V / 15A or 20A circuit. At full 1350W load, this unit draws close to the limit of a 15A circuit — leave headroom by keeping connected load under 80% (1080W) on a 15A branch, or provision a 20A circuit for full-capacity use.
Frequently Asked Questions
Q: Is the SRT1500RMXLAUS TAA-compliant for federal procurement?
A: Yes. The SRT1500RMXLAUS carries TAA compliance, satisfying Trade Agreements Act requirements for GSA schedule and government contract purchases.
Q: What is the runtime of the SRT1500RMXLAUS at half load?
A: At 675W (half load), the SRT1500RMXLAUS provides approximately 13.1 minutes of runtime. At full 1350W load, runtime is approximately 4.6 minutes.
Q: What network management cards are compatible with the SRT1500RMXLAUS SmartSlot?
A: The SRT1500RMXLAUS has two APC SmartSlot bays compatible with the AP9630 (SNMP network management), AP9631 (environmental monitoring), and AP9620 (legacy serial communications) cards.
Q: What battery does the SRT1500RMXLAUS use and can it be user-replaced?
A: The SRT1500RMXLAUS uses the RBC155 battery kit. It is designed for user replacement, so battery swaps can be performed in-house without a service call.
Q: What output receptacles does the SRT1500RMXLAUS provide?
A: The SRT1500RMXLAUS provides six NEMA 5-15R output receptacles at 120V.
Q: What input circuit is required for the SRT1500RMXLAUS at full load?
A: The SRT1500RMXLAUS uses a NEMA 5-15P plug on a 6-foot cord. At or near full 1350W load, a 20A branch circuit is recommended to maintain the 80% load rule on a 15A circuit.
The SRT1500RMXLAUS is one of those UPS units I consistently spec into government security head-end rooms specifically because of its TAA compliance — it clears the procurement gate that eliminates most of the APC Smart-UPS SRT line from federal bids. Beyond the compliance angle, the dual SmartSlot bays are what separate this unit from cheaper rack UPS options: you can drop in an AP9630 and AP9631 simultaneously, giving you both SNMP management and environmental monitoring from a single 2U device.
Technical Highlights:
- 1350W / 1500VA Capacity: The 1350W ceiling comfortably handles a mid-density security rack — a 16-channel NVR drawing ~80W, a 24-port PoE switch at ~200W, an access control server at ~150W, and miscellaneous edge devices — while staying well under load limits at typical deployments.
- Runtime Figures (Real-World): The 13.1-minute half-load runtime is meaningful for a graceful NVR shutdown; the 4.6-minute full-load figure is the number to design around when sizing shutdown scripts or generator transfer times — plan for the worst case, not the best.
- Dual SmartSlot Expansion: Two SmartSlot bays allow simultaneous AP9630 SNMP card and AP9631 environmental monitor — a configuration worth deploying in any IDF or head-end room where remote visibility into power events and ambient temperature matters.
Deployment Considerations:
- Provision a dedicated 20A / 120V branch circuit if you intend to run near full 1350W capacity — a shared 15A circuit will trip at sustained high draw. The NEMA 5-15P plug will fit a 15A outlet but the math only works safely up to ~1080W on that circuit.
- The RBC155 battery replacement is user-serviceable, but battery runtime degrades over time in warm environments — if this unit is installed in an equipment room without active cooling, factor in accelerated battery aging and plan replacements on a shorter cycle than APC's nominal guidance.
For a federal physical security deployment — a courthouse IDF, a DHS-contracted facility, or a VA medical center security room — the SRT1500RMXLAUS hits the right combination of TAA compliance, expandable network management, and a 1350W envelope that fits realistic head-end power loads without over-speccing the UPS budget.
