Description
The Vertiv Liebert PSI5-1500RM1201U is a high-performance, line-interactive UPS designed for space-constrained IT environments requiring reliable and efficient power protection. Delivering 1500VA / 1350W with a pure sine wave output, this 1U rack-mount UPS is ideal for servers, network closets, storage systems, and critical edge infrastructure.
Advanced Automatic Voltage Regulation (AVR) protects connected equipment from voltage fluctuations while extending battery life by minimizing unnecessary transfers to battery power. The compact 1U form factor conserves valuable rack space, while hot-swappable internal batteries ensure maximum uptime and serviceability.
With programmable outlets, USB communication, optional network management via IntelliSlot™, and ENERGY STAR®-qualified efficiency, the PSI5-1500RM1201U delivers enterprise-grade protection for modern IT deployments.
| Specification | Details |
|---|---|
| Brand | Vertiv Liebert |
| Model | PSI5-1500RM1201U |
| UPS Type | Line-Interactive |
| Form Factor | 1U Rack Mount |
| Power Capacity | 1500VA / 1350W |
| Output Waveform | Pure Sine Wave |
| Nominal Input Voltage | 100 / 110 / 115 / 120 / 125 VAC |
| Input Voltage Range (No Battery) | 75 – 146 VAC |
| Output Voltage (On Battery) | User-selectable, factory default 120 VAC |
| Frequency | 60 Hz ±1% (on battery) |
| Transfer Time | 4–6 ms typical |
| Battery Type | Valve-Regulated Lead-Acid (VRLA) |
| Battery Configuration | 6 × 6V batteries |
| Recharge Time | ~6–8 hours to 90% |
| Internal Battery Runtime (Half Load) | Up to 18 minutes |
| Outlets (Total) | 5 × NEMA 5-15R |
| Programmable Outlets | Yes |
| Communication Ports | USB |
| Network Management | Optional IntelliSlot™ SNMP/Web Card |
| Mounting Hardware | Included |
| Dimensions (W × D × H) | 17.2 × 24.8 × 1.7 in (438 × 631 × 44 mm) |
| Weight | 45.6 lb (20.7 kg) |
| Operating Temperature | 32°F to 104°F (0°C to 40°C) |
| Certifications | UL 1778, FCC Part 15 Class B |
| Equipment Protection Plan | $400,000 |
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
