Description
The Vertiv Liebert PSI5-1000RM1201U is a high-performance 1U rackmount line-interactive UPS designed to protect critical IT and network equipment in space-constrained environments. Delivering 1000VA / 900W of reliable power, it features pure sine wave output on battery, making it ideal for servers, network switches, storage devices, and VoIP systems.
Advanced Automatic Voltage Regulation (AVR) with buck and boost functionality stabilizes incoming power without draining the battery, extending battery life and ensuring consistent output during voltage fluctuations. The compact 1U form factor includes a rotatable LCD display, programmable outlet group, and hot-swappable internal batteries for easy maintenance.
With USB connectivity and support for optional SNMP network management, the PSI5-1000RM1201U provides enterprise-grade power protection, monitoring, and flexibility for modern IT racks and edge deployments.
| Category | Specification |
|---|---|
| Form Factor | 1U Rackmount |
| Power Capacity | 1000VA / 900W |
| Topology | Line-Interactive with AVR |
| Input Voltage | 120V AC (user-selectable 100–125V) |
| Input Voltage Range (No Battery) | 75–146 VAC |
| Output Voltage (On Battery) | 100 / 110 / 115 / 120 / 125 VAC |
| Output Waveform | Pure Sine Wave |
| Output Frequency | 60 Hz ±1% |
| Transfer Time | 4–6 ms (typical) |
| Outlets (Battery-Backed) | 5 × NEMA 5-15R |
| Controllable Outlets | Yes (programmable outlet group) |
| Battery Type | Valve-Regulated Lead Acid (VRLA) |
| Recharge Time | ~6 hours to 90% |
| Battery Configuration | 4 × 6V internal batteries |
| Management Interfaces | USB (SNMP via optional network card) |
| Display | Rotatable LCD |
| Noise Level | <45 dB (line mode) |
| Operating Temperature | 32°F to 104°F (0°C to 40°C) |
| Dimensions (W × D × H) | 17.2 × 20.1 × 1.7 in |
| Weight | Approx. 36.4 lbs |
| Certifications | UL 1778, FCC Class B |
| Warranty | 2-Year Advanced Exchange |
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
