Eaton 93E, 93PS, and Entry Three-Phase UPS: Specs and Service
Eaton's entry and mid-range three-phase UPS systems cover small data centers, healthcare, and commercial facilities. The value-engineered 93E spans roughly 15 to 600 kVA, the compact transformer-free 93PS and 91PS span about 8 to 80 kW, and the 9355 is a premium entry three-phase unit around 8 to 30 kVA. Comp-Utility, a long-standing Eaton distribution partner, specs, installs, and services these platforms across Central Texas.
What We Provide
Our Capabilities
Spec the Right Entry Platform
We match the 93E, 93PS, 91PS, or 9355 to your load, footprint, and budget for small and mid-size three-phase needs.
Learn moreInstallation and Commissioning
Clean installation and commissioning bring the system online with minimal disruption to your facility.
Learn moreMaintenance and Battery Service
Preventative maintenance and battery service keep entry three-phase systems reliable and warranty-compliant.
Learn moreRight-Sized Three-Phase
Efficient Protection for Small and Mid-Size Facilities
Not every facility needs a large modular UPS. Eaton's entry and mid-range three-phase systems deliver dependable online protection with high efficiency and a compact, transformer-free footprint, at a cost that fits small data centers, clinics, and commercial buildings.
From the value-engineered 93E to the compact 93PS and premium 9355, Comp-Utility helps you choose the right platform for the load.
Key Specifications
| Model | Topology | Rating | Voltage / phase |
|---|---|---|---|
| Eaton 93E | Online, value three-phase | 15 to 600 kVA | 208 / 400 / 480V |
| Eaton 93PS | Online, transformer-free, compact | 8 to 80 kW | 400V |
| Eaton 91PS | Online, single-module | 8 to 40 kW | 400V |
| Eaton 9355 | Online, premium entry | 8 to 30 kVA | 208V |
Specifications reflect the Eaton 93E, 93PS, 91PS, and 9355 product lines; exact ratings and configuration vary by model. Contact us to confirm the current configuration for your project.
The Comp-Utility Difference
Why Comp-Utility?
Long-Standing Distribution Partner
As a long-standing distribution partner of Eaton, Schneider Electric, and Vertiv, we specify best-in-class systems and back them with factory-grade service.
Engineer-Owned and Operated
Comp-Utility is owned and operated by engineers, with licensed Texas Professional Engineers (P.E.) on staff. That rigor anchors every design, specification, and installation.
Turnkey, Single-Contract Partner
We sell, design, install, and maintain complete infrastructure end to end. One accountable team and one contract for power, cooling, distribution, and cabling.
24/7 Emergency Response and Preventative Maintenance
Our technicians provide preventative maintenance programs and 24/7 emergency response, with rapid on-site dispatch across Central Texas when facilities need us most.
Licensed, Certified & Recognized
We hold ourselves to the standards of the institutions we serve, from professional licensure and jobsite safety to the industry organizations that set the bar for mission-critical work.
Licensed Professional Engineers
State of Texas (TBPE)
OSHA 30 Certified
Field Technicians
AFCOM Member
Data center industry association
7x24 Exchange Member
Mission-critical infrastructure
Frequently Asked Questions
What is the Eaton 93E?
The Eaton 93E is a value-engineered online double-conversion three-phase UPS spanning roughly 15 to 600 kVA. It offers reliable double-conversion protection and Energy Saver efficiency across a wide range, making it a cost-effective choice for mid and larger facilities that do not require a fully modular platform.
What are the 93PS and 91PS?
The 93PS is a compact, transformer-free three-phase UPS from about 8 to 80 kW with Energy Saver efficiency, suited to small and mid-size data centers and edge sites. The 91PS is a single-module transformer-free unit from about 8 to 40 kW for smaller critical loads. Both emphasize efficiency and a small footprint.
What is the Eaton 9355?
The 9355 is a premium entry three-phase UPS around 8 to 30 kVA at 208V, designed for small data centers, healthcare, and banking. It provides double-conversion protection with scalable battery runtime in a compact package, serving facilities that need three-phase reliability at lower capacity.
How do I choose among these entry three-phase models?
Selection depends on capacity, voltage, footprint, and budget. The 9355 and 91PS suit the smallest three-phase loads, the 93PS fits compact small and mid-size needs, and the 93E covers a broad mid-to-large range at a value price point. Comp-Utility's engineers match the model to your load and growth plan.
Are these systems efficient?
Yes. The transformer-free designs and Energy Saver operating modes make these platforms efficient for their class. While Eaton's modular 93PM and Power Xpert lines push efficiency and scalability further, the entry and mid-range systems provide strong efficiency with simpler deployment and lower cost for appropriately sized loads.
Can these UPS systems be paralleled or scaled?
Several of these models support paralleling for added capacity or redundancy, though they are not modular hot-swap systems like the 93PM. If you anticipate significant growth or need high availability, Comp-Utility can compare an entry platform against a modular one and recommend the better long-term fit.
Who installs and services these systems in Central Texas?
Comp-Utility, a long-standing Eaton distribution partner, specs, installs, commissions, and maintains the 93E, 93PS, 91PS, and 9355 across Central Texas, including battery service and 24/7 emergency response. Call (512) 346-0999 or email sales@comp-utility.com.
What maintenance do entry three-phase UPS systems need?
They require periodic battery testing, capacitor and fan replacement at end of life, connection and firmware checks, and verification of operating modes. A documented preventative maintenance program keeps the warranty valid and prevents downtime from wear items. Comp-Utility sets the cadence based on how critical the load is.
My UPS is in alarm, what do I do?
Call Comp-Utility right away at (512) 346-0999, and have the unit's model and serial number ready along with any alarm codes or messages shown on the UPS display. A unit in alarm can indicate a battery, load, or power-path issue that needs prompt attention. Because we maintain a large base of units under contract with the major UPS manufacturers, we can escalate directly to the right factory resources and coordinate service faster and more directly than a single end user calling general support, often getting you answers and a technician on site sooner.