APC by Schneider Electric SRT6KRMXLI vs Vertiv GXT5-6000RT208: Specification Comparison
Both the APC Smart-UPS SRT6KRMXLI and the Vertiv GXT5-6000RT208 are rack-mount, double-conversion online UPS units in the 6 kVA class, targeting data centers, server rooms, and critical infrastructure deployments. This comparison examines their power delivery, input/output electrical characteristics, and protection features to help installers and IT buyers evaluate which unit better fits their specific load requirements, input voltage environment, and installation constraints.
In This Guide
- Which unit delivers the right power capacity and efficiency for your load?
- How do the input voltage range and output voltage options compare for your facility's power environment?
- What protection features and operational indicators does each unit provide?
- Which should you choose: the SRT6KRMXLI or the GXT5-6000RT208?
- Side-by-Side Specs
- FAQ
Which unit delivers the right power capacity and efficiency for your load?
The SRT6KRMXLI is rated at 6,000 VA / 6,000 W, yielding a unity power factor (1.0), meaning its kVA and kW figures are identical — every volt-ampere translates to a usable watt. Efficiency is specified at 94.4%. The crest factor is 3:1, indicating tolerance for non-linear loads such as switch-mode power supplies common in server environments.
The GXT5-6000RT208, as specified in the provided data, is listed under a model family table where the closest 6 kVA entry (GXT5-6000MVRT4UXLN) is rated 6,000 VA / 6,000 W — also a unity power factor. However, the specific SKU GXT5-6000RT208 itself lists a 6,000 VA / 5,000 W rating per the product title, implying a 0.833 power factor for that hardwire variant. Efficiency, crest factor, and output waveform are not specified in the provided data for the GXT5-6000RT208.
How do the input voltage range and output voltage options compare for your facility's power environment?
The SRT6KRMXLI supports a wide input voltage operating range of 100 V to 275 V with an input frequency range of 40–70 Hz. Output voltage is selectable between 220 V and 240 V, with output frequency regulation at 50/60 Hz. The unit is designed for 230 V environments. It also carries a surge energy rating of 480 J and outputs a true sine waveform.
The GXT5-6000RT208 SKU designation includes '208,' indicating it is designed for a 208 V input/output environment — a common North American three-phase-derived single-phase voltage. The unit is specified as hardwire input/output. Input voltage range, input frequency tolerance, output voltage selectability, surge energy rating, and output waveform type are not provided in the supplied specifications for this model.
What protection features and operational indicators does each unit provide?
The SRT6KRMXLI specifies surge protection (480 J rating), audible alarms, Emergency Power Off (EPO) capability, and a noise level of 55 dB. EPO is a critical feature for data center compliance and rapid shutdown scenarios. The unit supports single-phase output.
For the GXT5-6000RT208, none of the following are specified in the provided data: surge energy rating, EPO availability, audible alarms, or acoustic noise level. The unit is noted as having pre-installed GXT3/GXT4 battery pods and uses a hardwire connection for both input and output, which suits permanently installed, high-availability infrastructure but limits plug-and-play flexibility. Management interface specifications are absent from the provided data for both units.
Which should you choose: the SRT6KRMXLI or the GXT5-6000RT208?
Our take: The SRT6KRMXLI is the stronger choice when the deployment requires a verified 6,000 VA / 6,000 W (unity power factor) output, a documented wide input voltage range (100–275 V), and explicit protection features such as EPO and 480 J surge suppression — all confirmed in the provided specifications. In contrast, the GXT5-6000RT208 title references a 6,000 VA / 5,000 W rating (0.833 power factor) for the hardwire variant, and its provided specifications omit efficiency, crest factor, input voltage range, surge rating, EPO, and acoustic noise — making direct confirmation of those parameters impossible from the data supplied. The SRT6KRMXLI is designed for 230 V environments; the GXT5-6000RT208 targets 208 V North American facilities, making voltage environment the primary platform qualifier when choosing between them.
Side-by-Side Comparison
Spec-for-spec, from manufacturer data.
| Specification | APC by Schneider Electric SRT6KRMXLI | Vertiv GXT5-6000RT208 |
|---|---|---|
| UPS Topology | Double-conversion (Online) | — |
| VA Rating | 6,000 VA | 6,000 VA |
| Watt Rating | 6,000 W | 5,000 W (per title) |
| Power Factor | 1.0 | 0.833 (derived) |
| Output Waveform | Sine | — |
| Input Voltage Range | 100 V – 275 V | — |
| Input Frequency Range | 40 – 70 Hz | — |
| Output Voltage Range | 220 V – 240 V | 208 V (per SKU) |
| Output Frequency | 50/60 Hz | — |
| Efficiency | 94.4% | — |
| Crest Factor | 3:1 | — |
| Surge Energy Rating | 480 J | — |
| Emergency Power Off (EPO) | Yes | — |
| Audible Alarm | Yes | — |
| Noise Level | 55 dB | — |
| Input/Output Connection | — | Hardwire |
Frequently Asked Questions
Which should you choose: the SRT6KRMXLI or the GXT5-6000RT208?
The SRT6KRMXLI is the stronger choice when the deployment requires a verified 6,000 VA / 6,000 W (unity power factor) output, a documented wide input voltage range (100–275 V), and explicit protection features such as EPO and 480 J surge suppression — all confirmed in the provided specifications. In contrast, the GXT5-6000RT208 title references a 6,000 VA / 5,000 W rating (0.833 power factor) for the hardwire variant, and its provided specifications omit efficiency, crest factor, input voltage range, surge rating, EPO, and acoustic noise — making direct confirmation of those parameters impossible from the data supplied. The SRT6KRMXLI is designed for 230 V environments; the GXT5-6000RT208 targets 208 V North American facilities, making voltage environment the primary platform qualifier when choosing between them.
Is the SRT6KRMXLI or the GXT5-6000RT208 rated for a higher usable watt output?
Based on the provided specifications, the SRT6KRMXLI is rated at 6,000 W (unity power factor at 6,000 VA). The GXT5-6000RT208 product title states 5,000 W at 6,000 VA, implying a 0.833 power factor for that hardwire SKU. The SRT6KRMXLI therefore delivers more usable watts at the same VA rating, per the specs provided.
Which unit is better suited for a North American 208 V data center versus an international 230 V installation?
The GXT5-6000RT208's SKU and title indicate a 208 V design, which is standard in North American data centers fed from three-phase infrastructure. The SRT6KRMXLI specifies a 220–240 V output range, positioning it for international or European 230 V environments. Input voltage range for the GXT5-6000RT208 is not specified in the provided data.
Does either unit support Emergency Power Off (EPO) for data center compliance?
The SRT6KRMXLI explicitly lists EPO as a supported feature in the provided specifications. EPO availability is not stated in the provided specifications for the GXT5-6000RT208; buyers requiring EPO on the Vertiv unit should verify with the manufacturer's full datasheet before specifying.
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