Eaton 9155 UPS — Premium Double-Conversion Online Backup Power
The Eaton 9155 UPS is a compact tower double-conversion online uninterruptible power supply engineered for IT departments, data centers, and electrical engineering facilities that demand reliable backup power protection. With 8–15 kVA capacity and 0.9 output power factor, this online UPS system delivers more real power in a smaller footprint, making it ideal for space-constrained server rooms and critical infrastructure environments. Whether protecting sensitive networking equipment, servers, or industrial control systems, the 9155 provides scalable battery runtime and premium power conditioning to keep your operations running without interruption.
Key Features
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Double-Conversion Online Technology — Continuous power conversion ensures zero-transfer-time protection from power disturbances
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8–15 kVA Capacity Range — Scalable power output to match your critical load requirements
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0.9 Output Power Factor — Maximizes real power delivery and reduces oversizing costs
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Compact Tower Design — High power density in minimal floor space for data center and server room installations
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Flexible Input/Output Voltages — Supports 200–240 VAC input with optional transformer module and multiple output configurations (100/200, 110/220, 120/240, 120/208 VAC)
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Scalable Battery Runtime — Configurable battery modules for extended backup duration
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Premium Power Conditioning — Protects against surges, sags, and electrical noise for sensitive IT equipment
Technical Specifications
| Specification |
Details |
| Manufacturer |
Eaton |
| Model |
9155 |
| Part Number |
K4081200S000000 |
| UPS Type |
Double-Conversion Online |
| Power Capacity |
8–15 kVA |
| Output Power Factor |
0.9 |
| Input Voltage |
200–240 VAC |
| Output Voltage Options |
100/200, 110/220, 120/240, 120/208 VAC |
| Form Factor |
Compact Tower |
| Battery Runtime |
Scalable (configurable modules) |
| Application |
IT Infrastructure, Data Centers, Electrical Engineering |
Frequently Asked Questions
What is a double-conversion online UPS and why does it matter?
A double-conversion online UPS continuously converts incoming AC power to DC and back to AC, providing zero-transfer-time protection. Unlike standby UPS systems, the 9155 eliminates switching delays during power events, ensuring uninterrupted power delivery to critical equipment with no voltage dips or surges.
How does the 0.9 power factor benefit my installation?
The 0.9 output power factor means the Eaton 9155 delivers more usable real power (kW) compared to lower power factor units. This reduces the need for oversized UPS capacity, lowering acquisition costs and improving efficiency in your data center or server room.
Can the Eaton 9155 UPS support different voltage configurations?
Yes. The 9155 accepts 200–240 VAC input and offers flexible output voltage options including 100/200, 110/220, 120/240, and 120/208 VAC. An optional input transformer module is available for additional voltage compatibility, making it suitable for diverse IT infrastructure environments.
Is the Eaton 9155 suitable for small server rooms?
Absolutely. The compact tower design delivers high power density in minimal floor space, making it ideal for space-constrained server rooms, network closets, and small data centers requiring reliable backup power without occupying excessive real estate.
