The Eaton 9155 UPS 208V is engineered for enterprise data centers, mission-critical facilities, and large-scale IT operations requiring highly reliable scalable backup power. This advanced smart UPS delivers:
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Online UPS protection with true double conversion technology for zero transfer time
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Isolation transformer design providing complete electrical isolation and enhanced protection
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Scalable architecture allowing expansion to meet growing power demands
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Enterprise-grade 208V operation optimized for data center and industrial applications
Key Features
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True online double conversion ensuring continuous power conditioning
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208V three-phase operation with isolation transformer for enhanced safety
- Advanced networkable UPS capabilities with comprehensive monitoring
- Consistent power factor correction optimizing electrical efficiency
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Hot-swappable components for maximum uptime and serviceability
Technical Specifications
| Manufacturer |
Eaton Corporation |
| Model Number |
K4151300BBBB000 |
| Type |
Online UPS with Isolation Transformer |
| Input Voltage |
208V AC (3-phase) |
| Output Voltage |
208V AC (3-phase) with isolation |
| Outlets |
16x NEMA 5-20R receptacles |
| Topology |
True Online (VFI - Voltage and Frequency Independent) |
| Power Factor |
0.9 output power factor |
| Transfer Time |
Zero (continuous online operation) |
| Frequency |
50/60 Hz ± 0.1% |
| Form Factor |
3-High Rack Mount Configuration |
| Scalability |
Parallel operation capable |
| Communication |
SNMP, RS-232, contact closure interfaces |
| Applications |
Data centers, server rooms, enterprise IT infrastructure |
Target Use Cases
Enterprise Data Centers: Perfect for large-scale data centers requiring scalable UPS solutions with true online protection and isolation transformer safety.
Mission-Critical Facilities: Ideal for hospitals, financial institutions, and government facilities where power interruption is not acceptable.
Server Room Protection: Excellent for enterprise server rack battery backup applications requiring 208V operation and multiple outlet distribution.
Industrial Control Systems: Suitable for manufacturing and process control environments demanding isolated power with zero transfer time.
Scalable Architecture Benefits
The Eaton 9155 UPS offers advanced scalable backup power capabilities:
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Modular Design: Add capacity modules as power requirements grow
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Parallel Operation: Connect multiple units for N+1 redundancy and increased capacity
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Hot-Swap Capability: Replace components without shutting down protected equipment
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Load Segmentation: Distribute power across different circuit breakers for enhanced reliability
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Future-Ready: Expandable architecture accommodates changing power demands
Isolation Transformer Technology
Advanced isolation transformer integration provides:
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Electrical Isolation: Complete galvanic isolation between input and output for enhanced safety
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Common Mode Noise Rejection: Eliminates ground loop issues and electrical noise
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Surge Protection: Additional protection layer against transient voltage spikes
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Grounding Flexibility: Independent output grounding for sensitive equipment protection
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Regulatory Compliance: Meets stringent electrical safety standards for commercial installations
Network Management Features
Comprehensive smart UPS monitoring and management:
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SNMP Interface: Full network integration with enterprise management systems
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Web-Based Monitoring: Remote access and control via built-in web interface
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Environmental Monitoring: Temperature and humidity sensors for data center management
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Automated Shutdown: Safe system shutdown during extended outages
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Event Logging: Detailed power event history for analysis and maintenance planning
Frequently Asked Questions
Q: What are the benefits of the isolation transformer in this UPS?
A: The isolation transformer provides complete electrical isolation, eliminates ground loops, reduces common mode noise, and enhances safety for sensitive electronic equipment.
Q: Can this UPS be expanded for higher capacity requirements?
A: Yes, the Eaton 9155 scalable design allows parallel operation of multiple units for increased capacity and N+1 redundancy configurations.
Q: How many servers can this UPS typically support?
A: With 16x 5-20R outlets and 208V operation, it can support multiple rack-mounted servers, depending on individual server power consumption and total UPS capacity.
Q: What makes this different from standard line-interactive UPS systems?
A: This online UPS provides true double conversion with zero transfer time, complete power conditioning, and isolation transformer protection - features not available in line-interactive designs.
Q: Is this suitable for three-phase server equipment?
A: Yes, the 208V three-phase design is specifically engineered for enterprise server equipment and data center applications requiring three-phase power distribution.
Q: What network monitoring capabilities are included?
A: The unit includes networkable UPS features with SNMP, web-based monitoring, environmental sensors, and integration capabilities with enterprise management systems.
Eaton 9155 UPS 208V with isolation transformer for enterprise data centers. Scalable online backup power with 16x 5-20R outlets and true double conversion protection.
