APC by Schneider Electric UPS - 120V - 208V - 16 KW - (1) Hard Wire 4-WIRE (3PH + - G35T20KF2B4S

APC by Schneider Electric G35T20KF2B4S 20kVA Three-Phase Rackmount UPS

Overview

The APC by Schneider Electric G35T20KF2B4S is a 20kVA / 16kW three-phase rackmount uninterruptible power supply built for data centers, server rooms, and large commercial installations where a power interruption means real operational and financial consequences. This is a hardwired unit — outputs are a (1) Hard Wire 4-Wire (3PH + G) and (1) Hard Wire 5-Wire configuration — making it appropriate for permanent infrastructure deployments rather than plugged-in workgroup gear. If you are sizing UPS for a high-density camera ecosystem, a multi-rack NVR environment, or a distributed enterprise security system, the G35T20KF2B4S sits in the right weight class to protect that investment.

For broader context on APC by Schneider Electric's commercial power protection line, see the full APC by Schneider Electric catalog. If you are evaluating rack power infrastructure holistically, the Power & UPS category covers complementary options including PDUs, inline filters, and smaller UPS units suited for edge deployments.

Key Features

• 20kVA / 16,000W Output Capacity: At 16kW real power, this unit can carry a meaningful portion of a high-density rack environment. A row of 32 servers drawing 500W each is exactly in range — size your IT load carefully against this figure before spec'ing down to a smaller unit.
• 93% Operating Efficiency: At 93% efficiency, losses across the UPS translate to roughly 1.1kW of heat generation at full load. That keeps cooling overhead manageable in tight data center environments and reduces energy operating costs compared to older-generation UPS designs that commonly operated in the mid-to-upper 80% range.
• Output Voltage THD ≤ 4%: A total harmonic distortion figure of 4% on the output means sensitive server and networking equipment sees a clean sine wave, not a distorted waveform that stresses power supplies and shortens component life. This matters most for installations with high-efficiency server PSUs rated for low-THD input.
• Hardwired 3-Phase Output (4-Wire and 5-Wire): Both output connections require permanent wiring by a licensed electrician — there are no NEMA receptacles on this unit. This is the right architecture for permanently installed infrastructure where you want a clean, inspectable connection rather than a plug that could be inadvertently disconnected.
• Sealed Lead Acid (VRLA) Battery Technology: VRLA batteries are maintenance-free in normal operation and do not require ventilation for hydrogen gas management, simplifying the room classification requirements for the installation space. Battery recharge time from depleted is 5 hours — plan maintenance windows accordingly if a runtime event occurs.
• 51.3 dB Noise Level: At 51.3 dB, this unit operates at roughly the level of a quiet office or library background noise. For equipment rooms without acoustic isolation, this is acceptable; for installations directly adjacent to occupied office space with no separation, verify the room layout before finalizing placement.
• Operating Temperature 0–40°C / Storage to 45°C: Standard commercial data center temperature range. The unit will not operate above 40°C (104°F) — if your equipment room runs warm under summer load or lacks redundant cooling, account for this ceiling in your facility design.
• Operating Altitude to 999.9m (3,280 ft): Rated for sea level through approximately 1,000m altitude at full spec. Installations above this elevation — common in mountain-state data centers and some international deployments — may require derating; consult APC engineering documentation for high-altitude correction factors.
• Comprehensive Safety Certifications: Carries cUL Listed, CSA, CSA C22.2 No. 107.1, ISO 14001, and ISO 9001 certifications. The cUL and CSA listings satisfy the Authority Having Jurisdiction (AHJ) requirements for most North American commercial electrical installations and are typically required before a permit will be issued for hardwired UPS equipment.
• Rackmount Form Factor: Ships as a rackmount chassis, integrating directly into standard 19-inch rack infrastructure. Verify available rack units before ordering — three-phase UPS units in this power class typically occupy significant rack depth and height.
• RS-232 Serial Port: The onboard serial port supports UPS management and monitoring integration. Pair with APC's management software or a compatible network management infrastructure for runtime monitoring, shutdown scripting, and event logging — essential for any unattended installation.
• Operating Humidity 0–95% (Non-Condensing): Wide humidity tolerance covers most commercial data center and equipment room environments without additional environmental controls beyond standard HVAC.

Integration & Compatibility

The G35T20KF2B4S accepts 120V and 208V input configurations, giving installers flexibility when working with existing building electrical infrastructure. The hardwired outputs require coordination with facility electrical at commissioning — this is not a drop-in replacement for a standard rack PDU. For network video recorder infrastructure or multi-server environments, confirm the UPS runtime requirement against your battery runtime curves at actual measured load, not nameplate capacity.

The single RS-232 serial port is the primary management interface. Installations requiring SNMP-based remote monitoring or network shutdown integration will need an APC network management card installed in the available accessory slot. Verify card compatibility with this chassis model before ordering separately.

Safety certifications (cUL, CSA, ISO 9001/14001) support procurement in regulated commercial and government environments. For questions on NDAA Section 889 compliance specific to this SKU, contact APC directly — compliance status for power infrastructure varies by procurement vehicle and contract terms.

Frequently Asked Questions

Q: What is the actual watt (real power) output of the G35T20KF2B4S?

A: The G35T20KF2B4S delivers 16,000W (16kW) of real power output. The 20kVA rating is apparent power — use the 16kW figure when sizing against your measured IT load.

Q: Does the G35T20KF2B4S require a licensed electrician to install?

A: Yes. Both output connections are hardwired — a 4-Wire (3PH + G) and a 5-Wire configuration. There are no plug-in NEMA receptacles. Permanent hardwired installation must be performed by a licensed electrician and typically requires an electrical permit.

Q: What input voltages does the G35T20KF2B4S support?

A: The G35T20KF2B4S supports both 120V and 208V input configurations, providing flexibility when integrating with existing commercial building electrical infrastructure.

Q: How long does the battery take to fully recharge after a discharge event?

A: Battery recharge time from depleted is 5 hours. Plan maintenance windows accordingly if the unit experiences a runtime event during a power outage.

Q: What safety certifications does the G35T20KF2B4S carry?

A: The unit carries cUL Listed, CSA, CSA C22.2 No. 107.1, ISO 14001, and ISO 9001 certifications. The cUL and CSA listings satisfy North American AHJ requirements for hardwired commercial UPS installations.

Q: Is a network management card included with the G35T20KF2B4S?

A: Network management card inclusion is not confirmed in the verified specifications for this unit. The onboard interface is a single RS-232 serial port. SNMP/network monitoring capability typically requires a separately purchased management card — verify compatibility with APC before ordering.

Karl Wilson

The G35T20KF2B4S is a purpose-built three-phase UPS for permanent infrastructure — the hardwired output topology alone tells you who this unit is for. At 93% efficiency and 16kW real power output, it's sized for multi-rack deployments where a standard single-phase unit simply won't carry the load, and where a brief power event has cascading consequences across an entire system.

Technical Highlights:

• 16kW Real Power Output: The gap between 20kVA apparent and 16kW real is the power factor — 0.8, typical for this class. Size your load to 16kW, not 20kVA, or you will hit the unit's capacity ceiling under full draw faster than expected.
• 93% Efficiency at Load: Translates to approximately 1.1kW of heat dissipated at full load — plan your room cooling budget around that figure. Older-generation UPS in this class ran 85–88%, so the delta is meaningful on a 24/7 operating basis.
• VRLA Battery, 5-Hour Recharge: Sealed lead acid means no ventilation exception needed for the room, which simplifies facility classification in most commercial building codes. The 5-hour recharge window is the operational planning constraint — if your site runs a second power event within that window, the unit may not have full runtime available.

Deployment Considerations:

• Both outputs are hardwired only — coordinate with the facility electrical contractor early. The 4-Wire (3PH + G) and 5-Wire terminations require conduit routing and a permit pull in most jurisdictions; this is not a same-week commissioning item.
• The operating altitude ceiling of 999.9m is a hard spec limit. Deployments in Denver, Albuquerque, or similar elevation markets need derating consultation before assuming full 16kW capacity — do not skip this step.

This unit fits a specific scenario well: a permanent, hardwired data center or large equipment room installation at commercial altitude, where the electrical infrastructure is already three-phase capable, the IT load is in the 10–16kW range, and the facility team has the licensed electricians and permitting process to handle a hardwired commissioning. If that description matches your project, the G35T20KF2B4S is a solid fit for the power class.