APC by Schneider Electric G35T15KH4B4S vs Vertiv GXT5-15KMVRT11UXLN: Specification Comparison
The APC MGE Galaxy 3500 G35T15KH4B4S and the Vertiv Liebert GXT5 GXT5-15KMVRT11UXLN are both 15 kVA online double-conversion UPS systems targeting data center and critical infrastructure deployments. The Galaxy 3500 is a three-phase, 400 V European-market floor-standing unit, while the GXT5 is a single-phase, 208/120 V North American rack/tower unit. Buyers cross-shopping these would evaluate power architecture, efficiency and autonomy, and management and integration capabilities—the three axes examined below.
In This Guide
How do the power architecture and electrical specifications differ?
The APC G35T15KH4B4S is rated at 15 kVA / 12,000 W (0.8 power factor), operates on a 400 V input at 40–70 Hz, and draws a maximum of 20 A. It is designed for three-phase European distribution environments. The Vertiv GXT5-15KMVRT11UXLN is rated at 15,000 VA / 15,000 W (1.0 power factor), accepts a typical input of 208 VAC with a range of 176–280 VAC, and delivers a user-configurable 208/120 VAC output with hardwired in/out connections. The GXT5 achieves unity power factor, meaning its kW output matches its kVA rating exactly—a meaningful advantage in high-density loads. The APC unit specifies a 40–70 Hz input frequency tolerance; no equivalent frequency tolerance range is published for the GXT5.
The GXT5 also supports optional Power Output Distribution (POD) modules, adding downstream flexibility not mentioned in the APC spec sheet. Input voltage range details beyond the 400 V nominal and maximum 20 A current are not provided for the G35T15KH4B4S.
Which unit offers better efficiency and battery autonomy?
The Vertiv GXT5-15KMVRT11UXLN publishes explicit efficiency ratings: up to 98% in Active ECO Mode and up to 95% in online double-conversion mode. No efficiency figures are provided in the APC G35T15KH4B4S specifications, making a direct efficiency comparison impossible.
For battery autonomy, the APC G35T15KH4B4S specifies a recharge time of 5 hours, uses Sealed Lead Acid (VRLA) battery technology, and requires 4 replacement battery cartridges. No battery recharge time, battery type, or cartridge count is published for the Vertiv GXT5-15KMVRT11UXLN in the provided specifications, though the GXT5 does list an external battery connector interface for runtime extension. Both units are rated for an operating temperature of 0–40 °C. The APC unit additionally specifies storage temperature (−15 to 45 °C), operating relative humidity (0–95%), storage humidity (0–95%), operating altitude (0–999.9 m), and non-operating altitude (0–15,000 m); none of these secondary environmental parameters are published for the GXT5.
How do the management interfaces and certifications compare?
The Vertiv GXT5-15KMVRT11UXLN provides a substantially richer documented management stack: a factory pre-installed Vertiv Liebert IntelliSlot RDU120 SNMP/Webcard, USB, RS485, RS232, a terminal block, and an external battery connector. SNMP and web management are enabled out of the box. A full-color graphic LCD with gravity-sensing orientation is included for local status and configuration. The unit is ENERGY STAR 2.0 certified, UL1778, c-UL listed, RoHS2, and REACH compliant.
The APC G35T15KH4B4S lists Emergency Power Off (EPO) support and certifications including CE, EN 50091-2, EN/IEC 62040-3, EN/IEC 62040-1-1, IEC 61000-3-2, IEC 61000-3-3, ISO 14001, ISO 9001, and VFI-SS-111. No network management card, SNMP interface, LCD panel, or communication port specifications are published in the provided specs for the APC unit. The APC unit does specify a noise level of 51.3 dB; no acoustic figure is published for the GXT5.
Which should you choose: the G35T15KH4B4S or the GXT5-15KMVRT11UXLN?
Our take: The GXT5-15KMVRT11UXLN is the stronger choice for North American single-phase 208/120 V rack or tower deployments requiring verified efficiency ratings and out-of-box network management. Its unity power factor (15,000 W from 15,000 VA versus 12,000 W from 15,000 VA on the APC), published efficiency of up to 98% in ECO mode, and factory-installed SNMP/web card are concrete, spec-documented advantages. The G35T15KH4B4S, by contrast, is the appropriate choice for three-phase 400 V European or international infrastructure, where its IEC/EN certifications, VFI-SS-111 classification, EPO capability, and fully specified battery autonomy (5-hour recharge, 4 VRLA cartridges) align with local distribution standards. Buyers on North American single-phase power with IT management requirements should default to the GXT5; buyers on European three-phase distribution should select the Galaxy 3500.
Side-by-Side Comparison
Spec-for-spec, from manufacturer data.
| Specification | APC by Schneider Electric G35T15KH4B4S | Vertiv GXT5-15KMVRT11UXLN |
|---|---|---|
| Power Rating (kVA) | 15 kVA | 15,000 VA |
| Power Rating (Watts) | 12,000 W | 15,000 W |
| Power Factor | 0.80 (derived) | 1.00 (unity) |
| Input Voltage | 400 VAC | Typical 208 VAC (range 176–280 VAC) |
| Output Voltage | — | 208/120 VAC (user-configurable) |
| Input Frequency | 40–70 Hz | — |
| Topology | — | Online double-conversion |
| Efficiency | — | Up to 98% ECO / up to 95% online |
| Battery Technology | Sealed Lead Acid (VRLA) | — |
| Battery Recharge Time | 5 h | — |
| Replacement Battery Cartridges | 4 | — |
| EPO Support | Yes | — |
| Management Interfaces | — | SNMP/Webcard, USB, RS485, RS232, terminal block |
| Display | — | Full-color graphic LCD |
| Certifications | CE, EN 50091-2, EN/IEC 62040-3, EN/IEC 62040-1-1, IEC 61000-3-2, IEC 61000-3-3, ISO 14001, ISO 9001, VFI-SS-111 | ENERGY STAR 2.0, UL1778, c-UL, RoHS2, REACH |
| Operating Temperature | 0–40 °C | 0–40 °C |
| Noise Level | 51.3 dB | — |
| Weight | 627 kg | 396.6 lbs (179.9 kg) |
| Form Factor | — | Rack/tower (flexible) |
Frequently Asked Questions
Which should you choose: the G35T15KH4B4S or the GXT5-15KMVRT11UXLN?
The GXT5-15KMVRT11UXLN is the stronger choice for North American single-phase 208/120 V rack or tower deployments requiring verified efficiency ratings and out-of-box network management. Its unity power factor (15,000 W from 15,000 VA versus 12,000 W from 15,000 VA on the APC), published efficiency of up to 98% in ECO mode, and factory-installed SNMP/web card are concrete, spec-documented advantages. The G35T15KH4B4S, by contrast, is the appropriate choice for three-phase 400 V European or international infrastructure, where its IEC/EN certifications, VFI-SS-111 classification, EPO capability, and fully specified battery autonomy (5-hour recharge, 4 VRLA cartridges) align with local distribution standards. Buyers on North American single-phase power with IT management requirements should default to the GXT5; buyers on European three-phase distribution should select the Galaxy 3500.
Is the G35T15KH4B4S or the GXT5-15KMVRT11UXLN better for a North American data center?
The GXT5-15KMVRT11UXLN is designed for North American single-phase 208/120 VAC infrastructure, carries UL1778 and c-UL listings, and is ENERGY STAR 2.0 certified. The G35T15KH4B4S is a 400 V three-phase unit with European IEC/EN certifications and is not specified for 208 V single-phase environments. For a North American deployment, the GXT5 is the appropriate choice based on the published specs.
Which UPS is more efficient, and does that affect operating costs?
The Vertiv GXT5-15KMVRT11UXLN publishes efficiency figures—up to 98% in Active ECO Mode and up to 95% in online double-conversion mode. No efficiency rating is published in the APC G35T15KH4B4S specifications provided, so a direct numeric comparison cannot be made. Higher efficiency directly reduces heat output and energy cost at full load, so buyers should request APC's efficiency data sheet before evaluating total cost of ownership.
Does either UPS support SNMP monitoring out of the box?
Yes—the Vertiv GXT5-15KMVRT11UXLN comes with a factory pre-installed Vertiv Liebert IntelliSlot RDU120 SNMP/Webcard and supports SNMP and web management enabled by default, along with USB, RS485, RS232, and a terminal block. The APC G35T15KH4B4S specifications provided do not list any network management card, SNMP interface, or communication ports; buyers requiring remote monitoring should verify APC's available management accessories separately.
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