APC by Schneider Electric SUVTP20KH2B4S Three-Phase Online Double-Conversion UPS
Overview
The APC by Schneider Electric SUVTP20KH2B4S is a 20 kVA / 16 kW three-phase online UPS designed for data centers, server rooms, and critical infrastructure installations where a single-phase unit simply cannot carry the load. Input and output are both 400V three-phase — meaning it drops directly into European and international three-phase distribution without a transformer. If you're protecting a dense rack row, a mid-tier compute cluster, or centralized network equipment running on three-phase power, this is the unit class to evaluate.
The 20 kVA / 16,000 W output capacity handles a meaningful slice of a populated equipment room. At full load, expect roughly 5.5 minutes of runtime — enough for an orderly shutdown sequence or a generator to come online. Drop to half load and that extends to 18.3 minutes, which covers the majority of brief grid disturbances without touching the generator at all. The 4-hour battery recharge time is competitive for a unit this size and keeps the protection window short after a discharge event.
Key Features
- 20 kVA / 16 kW Output Capacity: Rated for up to 27A maximum output current on a 400V three-phase system. This covers dense server racks, centralized storage arrays, or mid-scale networking gear — equipment classes that routinely exceed single-phase UPS capacity limits.
- Online Double-Conversion Topology: The load runs continuously from converted AC power, not from the battery only during an outage. This eliminates transfer-time gaps entirely, which matters for power-sensitive equipment like blade servers and storage controllers that can't tolerate even a 4 ms switchover window.
- Hot-Swap Battery Modules: Batteries can be replaced under load without shutting down the protected equipment. For a 24/7 data center or network operations center, this removes the scheduled maintenance window that a non-hot-swap unit would require — a practical operational advantage over the unit's multi-year service life.
- Emergency Power Off (EPO) Support: The SUVTP20KH2B4S includes EPO capability, allowing remote de-energization of the entire UPS output from a panel-mounted button. Required by many data center build-outs and fire codes for rooms with high equipment density.
- 5.5 Min Full Load / 18.3 Min Half Load Runtime: These are realistic, tested figures. At full 16 kW, you get enough time to execute a graceful shutdown or hand off to a generator. At 8 kW (half load), 18.3 minutes of runtime handles virtually all short utility outages without generator involvement — measurably reducing generator wear.
- 64 dB Noise Level: Audible, but within the expected range for a 20 kVA three-phase unit in a machine room context. This is not a unit for open office or noise-sensitive environments — it belongs in a dedicated equipment room or data hall where ambient noise already exceeds this level.
- 0–40°C Operating Range: Standard data center operating range. The storage temperature floor drops to -50°C, which matters if the unit is being stored or shipped to cold-climate installations before being commissioned.
- 0–95% Relative Humidity (Non-Condensing): Wide humidity tolerance across both operating and storage ranges means this unit handles less-than-ideal equipment room conditions without special environmental controls, as long as condensation is avoided.
- LED Indicators and Audible Alarms: Local status visibility without requiring a network connection or management software to confirm operational state — useful during commissioning and physical audits.
- CE and ISO Certification: CE marking confirms compliance with European Union directives for electrical safety and EMC. ISO certification indicates manufacturing quality system compliance. Both are relevant if the installation falls under procurement requirements that mandate certified equipment.
Integration and Compatibility
The SUVTP20KH2B4S is built around a 400V three-phase input/output architecture with an Interface Port P — confirm your facility's distribution panel is wired for 400V three-phase before ordering. The unit integrates with APC's broader Smart-UPS VT ecosystem, which supports network management cards for SNMP-based monitoring, allowing this UPS to report status to a building management system or network operations center. Pair with APC's network management accessories for remote shutdown scripting, load shedding, and alarm forwarding. For installations requiring extended runtime beyond the standard battery complement, APC offers external battery enclosures compatible with the Smart-UPS VT platform — verify compatibility against the specific battery frame configuration (this unit ships with a 2+4 battery configuration as indicated in the model suffix B4S).
Frequently Asked Questions
Q: What is the output power capacity of the SUVTP20KH2B4S?
A: The SUVTP20KH2B4S is rated at 20 kVA / 16,000 W (16 kW) output capacity with a maximum output current of 27A on a 400V three-phase system.
Q: How long will the SUVTP20KH2B4S run on battery at full load?
A: Typical backup time at full load (16 kW) is 5.5 minutes. At half load (8 kW), runtime extends to approximately 18.3 minutes. These are manufacturer-specified typical values.
Q: Can batteries be replaced without shutting down the protected equipment?
A: Yes. The SUVTP20KH2B4S supports hot-swap battery replacement, meaning battery modules can be serviced under load without powering down connected equipment.
Q: Does the SUVTP20KH2B4S support Emergency Power Off (EPO)?
A: Yes. The unit includes EPO capability, allowing the UPS output to be remotely de-energized from a separately wired EPO switch — a requirement in many data center and equipment room installations.
Q: What is the input and output voltage configuration?
A: Both input and output are 400V three-phase. This unit is not compatible with single-phase distribution or 208V three-phase common in North American data centers — confirm your facility's panel configuration before ordering.
Q: What certifications does the SUVTP20KH2B4S carry?
A: The unit carries CE marking (European electrical safety and EMC compliance) and ISO certification (manufacturing quality system). Verify current certification documentation with the manufacturer for jurisdiction-specific procurement requirements.
The spec I keep coming back to on the SUVTP20KH2B4S is the 18.3-minute half-load runtime — that's the number that separates a unit doing real work from one just buying you time to panic. In a mid-scale equipment room running at 50% utilization (which is the norm, not the exception), you're looking at nearly 20 minutes of clean power before a generator needs to carry the load. That's a meaningful operational buffer.
Technical Highlights:
- 27A Maximum Output Current: At 400V three-phase, 27A supports a substantial rack density. Size your circuit breakers and distribution accordingly — the upstream feed needs to be rated above this figure with appropriate headroom per local electrical code.
- 4-Hour Battery Recharge Time: After a full discharge event, you're back to full protection in 4 hours. For sites that experience frequent short outages, this recharge rate keeps the protection window short and reduces the risk of a second outage catching the unit partially charged.
- 64 dB Operating Noise: Plan for this in your room layout. At 64 dB continuous, this unit adds measurable noise to the room. It belongs behind a closed equipment room door or inside a sound-attenuating enclosure if adjacent spaces are occupied.
Deployment Considerations:
- The 400V three-phase input is the critical site qualification check. North American facilities typically run 208V or 480V three-phase — this unit does not adapt to those voltages and requires a 400V three-phase feed from the distribution panel.
- The 0–40°C operating range is standard, but note that sustained high ambient temperatures shorten battery service life. If your equipment room regularly runs above 25°C, expect battery replacement intervals to compress versus manufacturer projections.
The SUVTP20KH2B4S is well-matched to European or international data center rows, colocation cage builds, and industrial control rooms where 400V three-phase distribution is already in place and the load profile sits in the 10–16 kW range — exactly the deployment scenario where single-phase UPS options run out of headroom and the next step up in three-phase capacity exceeds the budget and footprint requirements.
