Vertiv ITA2-05KRT208C 5kVA 208V Rack-Mount Online UPS
Overview
The Vertiv Liebert ITA2-05KRT208C is a 5kVA online double-conversion UPS designed for 208V rack environments where power continuity is non-negotiable. Rated at 5kVA, this unit sits at the entry point of the ITA2 family — a line that scales to 20kVA — making it a natural fit for small server rooms, edge compute racks, and network closets that need true online protection without committing to a larger footprint. The ITA2-05KRT208C (often searched as ITA2 05KRT208C) delivers the isolation and conditioning that line-interactive units simply cannot match when your load is sensitive switching equipment or storage arrays.
Unlike standby or line-interactive designs that switch to battery only on outage, an online double-conversion architecture continuously powers your load from the inverter. Incoming utility power charges the battery while the inverter runs the output — zero transfer time on a power event, and continuous filtering of voltage fluctuations, frequency drift, and harmonic distortion. For racks housing network infrastructure or surveillance NVRs running 24/7, that means no micro-interruptions that cause unplanned reboots or corrupted write cycles.
Key Features
- 5kVA Online Double-Conversion: The ITA2-05KRT208C runs your load continuously off the inverter — there is no transfer time when utility power fails. This eliminates the brief (2–8ms) transfer gap found in line-interactive UPS units that can cause modern switching power supplies to brown out or reset.
- 208V Input/Output: Designed specifically for 208V single-phase environments typical of North American commercial data centers and server rooms wired from a 3-phase distribution panel. Verify your PDU and load equipment are rated 208V before specifying — this is not a 120V unit.
- Rack Form Factor: Built for standard 19-inch rack installation, keeping the UPS co-located with the protected load. Reduces cable run length and simplifies capacity planning per-rack rather than per-room.
- Scalable ITA2 Family: The ITA2 line extends from 5kVA to 20kVA in the same product family. If your rack density grows — adding more compute, storage, or PoE switch infrastructure — the upgrade path stays within the same platform, which simplifies serviceability and spare-parts management.
- Critical Load Isolation: Online topology isolates the output from utility noise, surges, and harmonic distortion continuously — not just during outages. Environments with variable loads (compressors, HVAC cycling near the panel, elevator motors on the same circuit) introduce noise that degrades sensitive electronics over time; double-conversion removes that path entirely.
- Commercial-Grade Build: The ITA2 platform targets IT and light industrial deployments where a consumer-grade UPS would be undersized or unreliable for continuous 24/7 operation across multi-year service windows.
Integration and Compatibility
The ITA2-05KRT208C is designed for standard 19-inch rack bays and pairs with Vertiv's monitoring and management ecosystem. For deployments requiring network-based shutdown or runtime monitoring, verify compatibility with your UPS management card and SNMP/NMC options for the ITA2 platform. Consult the rack UPS category for complementary power protection options, or the broader Vertiv power and thermal management lineup for coordinated infrastructure planning. Organizations building out surveillance or IT closets should also review PoE switch power budgets alongside UPS capacity to avoid undersizing the UPS for actual peak draw.
Frequently Asked Questions
Q: What is the power rating of the ITA2-05KRT208C?
A: The ITA2-05KRT208C is rated at 5kVA at 208V. The ITA2 family also includes 8/10kVA and 15/20kVA 208V models if your load requirements exceed 5kVA.
Q: Is the ITA2-05KRT208C a true online double-conversion UPS?
A: Yes. The ITA2 uses an online double-conversion topology, meaning the load runs continuously off the inverter with zero transfer time on utility failure — unlike line-interactive units that have a brief switchover gap.
Q: What voltage does the ITA2-05KRT208C support?
A: This model is configured for 208V operation, which is standard in North American commercial facilities drawing from a 3-phase distribution panel. It is not rated for 120V single-phase circuits.
Q: Can the ITA2-05KRT208C be rack-mounted?
A: Yes. The ITA2-05KRT208C is a rack-mount unit designed for standard 19-inch racks, keeping it co-located with the protected load in the same cabinet.
Q: How does the ITA2-05KRT208C fit within the broader ITA2 product family?
A: The 5kVA model is the entry point of the ITA2 line. The family scales to 8/10kVA and 15/20kVA at 208V, providing an upgrade path within the same platform as rack density grows.
The ITA2-05KRT208C sits at the practical entry point for 208V online UPS protection in commercial racks — 5kVA is enough headroom for a fully loaded 1U/2U server plus a managed PoE switch and a patch panel, but it is not a unit you spec blindly without a load calculation. I recommend it specifically for single-rack deployments where the total continuous load stays under roughly 4kW (accounting for typical 80% derating on runtime planning).
Technical Highlights:
- Online Double-Conversion at 5kVA: Zero transfer time means NVRs mid-write and servers in the middle of database commits survive a utility event without a hiccup — something a 2–8ms line-interactive gap cannot guarantee on modern PSUs running at tight voltage tolerances.
- 208V-Native Design: Sourced and spec'd for 208V single-phase — the dominant voltage in North American colo and commercial server rooms fed from 208Y/120V 3-phase panels. No step-down transformer required, no efficiency loss from conversion.
- ITA2 Family Scalability: The 5kVA, 8/10kVA, and 15/20kVA models share the same platform identity, so upgrading a rack as density grows doesn't mean retraining staff or sourcing a different management card ecosystem.
Deployment Considerations:
- Confirm your actual connected load with a power meter before finalizing — nameplate watts on servers and switches are worst-case, but 208V UPS selection at 5kVA leaves little margin if you're running at 90%+ nameplate capacity across multiple devices.
- This unit is 208V input/output only — do not use it to protect 120V equipment without a step-down transformer downstream, and do not install it on a 120V circuit.
The ITA2-05KRT208C is the right specification for a single-rack edge node or network closet in a commercial building where 208V distribution is already in place and the protected load — servers, NVRs, managed switches — needs continuous power conditioning rather than just surge suppression.
