Description
The Eaton FERRUPS 5.3kVA Tower UPS (FJ400AA0A0A0A0B) provides premium ferroresonant backup power for critical applications where uptime is non-negotiable. Designed for military installations, emergency call centers, and maritime use, this UPS ensures uninterrupted power delivery with clean, regulated output and 20 minutes of runtime at full load. Its rugged tower form factor and 2-year limited warranty make it a reliable choice for high-demand environments requiring 120V input/output and hardwired integration.
| Specification | Details |
|---|---|
| Manufacturer | Eaton Corporation |
| Part Number | FJ400AA0A0A0A0B |
| Product Line | FERRUPS |
| Product Series | FE |
| Product Type | Ferro-resonant UPS |
| Form Factor | Tower |
| Load Capacity | 5300 VA / 3700 W |
| Input Voltage | 120 V AC |
| Output Voltage | 120 V AC |
| Receptacle Type | Hardwired |
| Runtime (Full Load) | 20 minutes |
| Height | 29.5 in |
| Width | 15.5 in |
| Depth | 25 in |
| Weight | 484 lb |
| Shipping Weight | 560 lb |
| Condition | New and Factory Fresh |
| Warranty | 2-Year Limited Warranty |
| Country of Origin | United States |
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
