Description
The Vertiv Liebert PSI5-1500RT120TAA is a high-performance, line-interactive uninterruptible power supply designed to protect critical IT and network equipment in government and regulated environments. With 1500VA / 1350W capacity, a 0.9 output power factor, and pure sine wave output on battery, this UPS delivers clean, reliable power to servers, networking gear, storage, and communications systems.
Built for flexibility, the PSI5 supports 2U rack or tower deployment, includes a rotatable LCD display, and features programmable outlet groups that allow load shedding and remote power cycling to extend runtime for critical devices. Advanced Automatic Voltage Regulation (AVR) corrects voltage fluctuations without switching to battery, helping extend battery life and reduce wear.
This TAA-compliant model is ideal for federal, defense, and government IT installations requiring compliance without compromising performance. Support for external battery cabinets enables extended runtime for longer outages, while USB communication allows integration with power management software for safe, orderly shutdowns.
| Category | Specification |
|---|---|
| Manufacturer | Vertiv |
| Series | Liebert PSI5 |
| Model Number | PSI5-1500RT120TAA |
| UPS Topology | Line-Interactive |
| Form Factor | Rack / Tower (2U) |
| Power Capacity | 1500 VA / 1350 W |
| Output Power Factor | 0.9 |
| Input Voltage | 100 / 110 / 115 / 120 / 125 VAC |
| Input Voltage Range | 75 – 146 VAC |
| Output Voltage | 120 VAC |
| Output Waveform | Pure Sine Wave |
| Transfer Time | 4–6 ms (typical) |
| Battery Type | Internal VRLA, hot-swappable |
| Runtime (Full Load) | ~6 minutes |
| Runtime (Half Load) | ~18 minutes |
| External Battery Support | Yes |
| Output Receptacles | NEMA 5-15R (battery-backed & programmable groups) |
| Communications | USB |
| Display | Rotatable LCD |
| Surge Protection | 1372 Joules |
| Noise Level | <45 dBA (line mode), <55 dBA (battery mode) |
| Operating Temperature | 32°F to 104°F (0°C to 40°C) |
| Compliance | TAA Compliant |
| Safety Certifications | UL 1778 |
| Warranty | 2 Years |
Payment & Security
Your payment information is processed securely, and we do not store credit card details or access your credit card information.
Return Policy (Short Summary)
We offer a 30-day return window for most unopened, factory-sealed items.
Returns must be authorized before shipping back and must include all original packaging and accessories. Opened or used items are not returnable unless defective.
Some products—such as custom orders, special-order items, audio gear, software, and LED video walls—are non-returnable. Non-defective returns may be subject to a 20–30% restocking fee, and customers are responsible for return shipping costs.
For damaged or incorrect items, please contact us immediately.
From Scope to Sign-Off
A structured delivery process designed to reduce risk and keep projects moving.
Plan
Discovery, site review, requirements gathering, and project alignment. We define scope, constraints, and success criteria before any design work begins.
- Discovery calls & stakeholder interviews
- On-site survey & infrastructure review
- Requirements & use-case documentation
- Project scope, timeline & milestone alignment
Engineer
System design, schematics, signal flow, BOM development, and documentation. Every project leaves this phase with a complete engineering package.
- AV system design & signal flow diagrams
- Equipment selection & BOM development
- Rack layout & control system design
- As-built documentation package
Deploy
Procurement, logistics, installation, programming, commissioning, and training. We own the delivery from first shipment to final handoff.
- Authorized procurement & logistics coordination
- Physical installation & cable management
- Control system programming & configuration
- Commissioning, testing & end-user training
Support
Monitoring, maintenance, lifecycle planning, and long-term service agreements. We stay engaged long after project close.
- 24/7 remote system monitoring
- Preventive & reactive maintenance
- Technology lifecycle & refresh planning
- Long-term service level agreements
A decade of delivery — trusted by 275+ clients across industries
