APC by Schneider Electric SRT6KRMXLT-IEC vs Vertiv GXT5LI-6000GVRT3UXLN: Specification Comparison
Both the APC Smart-UPS SRT6KRMXLT-IEC and the Vertiv Liebert GXT5LI-6000GVRT3UXLN are 6000VA/6000W rackmount, double-conversion (online) UPS units targeting data centers, server rooms, and critical IT infrastructure. They share the same power class and topology, making them direct cross-shop candidates for buyers evaluating 6kVA online UPS options with IEC-compatible outputs. This comparison covers power and electrical specifications, physical and environmental characteristics, and management and compliance features based strictly on provided spec data.
In This Guide
- How do the power delivery and electrical specifications differ between the SRT6KRMXLT-IEC and GXT5LI-6000GVRT3UXLN?
- What are the physical footprint, environmental tolerances, and installation requirements for each unit?
- Which unit offers stronger management capabilities and what are the compliance and certification differences?
- Which should you choose: the SRT6KRMXLT-IEC or the GXT5LI-6000GVRT3UXLN?
- Side-by-Side Specs
- FAQ
How do the power delivery and electrical specifications differ between the SRT6KRMXLT-IEC and GXT5LI-6000GVRT3UXLN?
Both units deliver 6000VA/6000W at unity power factor, confirming full double-conversion efficiency with no VA-to-watt derating. The APC SRT6KRMXLT-IEC accepts a significantly wider input voltage range of 100–275V versus the Vertiv GXT5LI's 200–240V input range, giving the APC a broader tolerance for variable or degraded utility power without switching to battery. The APC also supports a wider input frequency window of 40–70Hz compared to the Vertiv, for which input frequency is not specified.
On the output side, the APC SRT6KRMXLT-IEC operates at 208–240V output with a specified Total Harmonic Distortion (THD) of 2% and a crest factor of 3:1, and its surge energy rating is 480J. The Vertiv GXT5LI outputs 230VAC by default, user-configurable from 200–240VAC at ±1% regulation. Output THD, crest factor, and surge energy rating are not provided in the Vertiv spec sheet. Both units produce a pure sine wave output, as expected of online double-conversion topology.
What are the physical footprint, environmental tolerances, and installation requirements for each unit?
The Vertiv GXT5LI-6000GVRT3UXLN provides complete physical dimensions: 5.25 in (3U) height, 16.9 in width, 35 in depth, and 99 lbs weight. The APC SRT6KRMXLT-IEC does not include any physical dimensions or weight in the provided specifications, so direct rack-space and floor-load comparisons cannot be made from these specs alone.
Operating temperature is specified only for the Vertiv: 32°F to 104°F (0°C to 40°C), with a 10% derating noted at 50°C. The APC SRT6KRMXLT-IEC's operating temperature range is not listed in the provided specs. The Vertiv uses hardwired input (L1-L2/N-G wiring), which requires a licensed electrician for installation and eliminates plug-based deployment flexibility. The APC's input connection type is not specified in the provided data. Noise level is specified only for the APC at 55 dB; the Vertiv's acoustic output is not stated.
Which unit offers stronger management capabilities and what are the compliance and certification differences?
The APC SRT6KRMXLT-IEC explicitly lists web-based management and Emergency Power Off (EPO) capability, along with audible alarms and surge protection. These are directly relevant to IT buyers who need remote monitoring, emergency shutdown integration, and alerting in a managed data center environment. The Vertiv GXT5LI does not list web-based management, EPO, or audible alarms in the provided specifications — buyers should verify these capabilities independently before assuming parity.
On certifications, the Vertiv GXT5LI-6000GVRT3UXLN carries an extensive listed set of agency approvals: IEC 62040-1:2008+A1 2013, IEC 62619 1st Ed., IEC 62040-2 2nd Ed., IEC 61000-3-2, IEC 61000-3-12, CISPR22 Class A, FCC Part 15 Class A, and UL 1778. The APC SRT6KRMXLT-IEC has no certifications listed in the provided specifications; buyers with regulatory or compliance mandates should obtain the APC compliance documentation separately. The Vertiv's lithium-ion battery chemistry (per model name GXT5LI) implies a different battery maintenance and replacement profile versus traditional VRLA — the APC battery type is not stated in the provided specs.
Which should you choose: the SRT6KRMXLT-IEC or the GXT5LI-6000GVRT3UXLN?
Our take: The SRT6KRMXLT-IEC is the stronger choice when input power quality is variable or uncertain, management integration is required, and acoustic environment matters. Its 100–275V input range far exceeds the Vertiv's 200–240V window, reducing battery cycling on fluctuating utility feeds. It also specifies web-based management and EPO — critical features for managed data center deployments — while the Vertiv does not list these in the provided specs. The APC's 2% output THD and 55 dB noise rating provide concrete quality benchmarks absent from the Vertiv's data. Conversely, the Vertiv GXT5LI-6000GVRT3UXLN's lithium-ion chemistry (per model designation) offers a different battery lifespan and weight profile, and it ships with a comprehensive published certification list (UL 1778, IEC 62040-1, FCC Part 15, and others). The Vertiv suits buyers with strict compliance documentation requirements or lithium-ion battery preferences, while the APC is better suited to managed IT environments requiring flexible input and remote oversight.
Side-by-Side Comparison
Spec-for-spec, from manufacturer data.
| Specification | APC by Schneider Electric SRT6KRMXLT-IEC | Vertiv GXT5LI-6000GVRT3UXLN |
|---|---|---|
| UPS Topology | Double-conversion (Online) | Not specified in provided specs |
| Power Rating | 6000 VA / 6000 W | 6000 VA / 6000 W |
| Power Factor | 1.0 (6kVA = 6kW) | 1.0 (6kVA = 6kW) |
| Input Voltage Range | 100–275V | 200–240V |
| Input Frequency | 40–70 Hz | — |
| Output Voltage | 208–240V | 230VAC default; 200–240VAC configurable |
| Output Voltage Regulation | — | ±1% |
| Output Frequency | 50/60 Hz | — |
| Output THD | 2% | — |
| Crest Factor | 3:1 | — |
| Surge Energy Rating | 480 J | — |
| Waveform | Sine | Not specified (online topology implies sine) |
| Battery Chemistry | — | Lithium-ion (per model designation) |
| Input Connection | — | Hardwired (L1-L2/N-G) |
| Web-Based Management | Yes | — |
| Emergency Power Off (EPO) | Yes | — |
| Audible Alarms | Yes | — |
| Noise Level | 55 dB | — |
| Operating Temperature | — | 0°C to 40°C (32°F to 104°F); 10% derate at 50°C |
| Weight | — | 99 lbs |
| Height | — | 5.25 in (3U) |
| Width | — | 16.9 in |
| Depth | — | 35 in |
| Agency Certifications | — | UL 1778, IEC 62040-1, IEC 62040-2, IEC 62619, IEC 61000-3-2, IEC 61000-3-12, CISPR22 Class A, FCC Part 15 Class A |
Frequently Asked Questions
Which should you choose: the SRT6KRMXLT-IEC or the GXT5LI-6000GVRT3UXLN?
The SRT6KRMXLT-IEC is the stronger choice when input power quality is variable or uncertain, management integration is required, and acoustic environment matters. Its 100–275V input range far exceeds the Vertiv's 200–240V window, reducing battery cycling on fluctuating utility feeds. It also specifies web-based management and EPO — critical features for managed data center deployments — while the Vertiv does not list these in the provided specs. The APC's 2% output THD and 55 dB noise rating provide concrete quality benchmarks absent from the Vertiv's data. Conversely, the Vertiv GXT5LI-6000GVRT3UXLN's lithium-ion chemistry (per model designation) offers a different battery lifespan and weight profile, and it ships with a comprehensive published certification list (UL 1778, IEC 62040-1, FCC Part 15, and others). The Vertiv suits buyers with strict compliance documentation requirements or lithium-ion battery preferences, while the APC is better suited to managed IT environments requiring flexible input and remote oversight.
Which unit handles poor or variable utility power better — the SRT6KRMXLT-IEC or the GXT5LI-6000GVRT3UXLN?
Based on provided specs, the APC SRT6KRMXLT-IEC handles a wider input voltage range (100–275V) compared to the Vertiv GXT5LI's 200–240V input range. This wider window means the APC is less likely to switch to battery during voltage sags or surges on degraded utility feeds. The APC also specifies an input frequency tolerance of 40–70Hz; the Vertiv's input frequency range is not stated in the provided specs.
Does the GXT5LI-6000GVRT3UXLN use lithium-ion batteries, and how does that compare to the SRT6KRMXLT-IEC?
The Vertiv model designation includes 'LI,' indicating lithium-ion battery chemistry, and the product description confirms this. Lithium-ion batteries typically offer longer service life and lighter weight than traditional VRLA batteries. The APC SRT6KRMXLT-IEC's battery chemistry is not specified in the provided data, so a direct battery-type comparison cannot be made from these specs alone. Buyers should consult APC documentation to confirm battery type before making a decision based on battery lifecycle cost.
Which UPS is better for a compliance-sensitive environment requiring documented certifications?
Based on the provided specifications, the Vertiv GXT5LI-6000GVRT3UXLN lists a comprehensive set of agency approvals including UL 1778, IEC 62040-1, IEC 62040-2, IEC 62619, IEC 61000-3-2, IEC 61000-3-12, CISPR22 Class A, and FCC Part 15 Class A. The APC SRT6KRMXLT-IEC has no certifications listed in the provided spec data. Buyers in regulated industries or requiring documented compliance should independently verify APC certification status before ruling it out, but the Vertiv provides a ready compliance evidence trail as spec-stated.
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