Eaton 3S UPS

Sizes: 350VA, 550VA, 750VA

Eaton 3S Model UPS

350VA, 550VA, 750VA

The sleek and slim Eaton 3S delivers high efficiency and energy-saving battery backup and surge protection for your premium home and office equipment.


The compact, versatile 3S UPS fits under a desk or mounts on the wall.

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Snapshot, Tech Specs, PDFs

Download our brochure and user guides to learn more about our products.

What Connection do I need for my UPS System?

Systems can be plugged into a common receptacle, receptacle may need to be modified for larger system, and a whole network of users can be "Hardwired" into an electrical panel.

Choosing Input Plug and Receptacle Types

 It is common to use Plug and Play UPS Systems up to 6000VA. However your standard 15 Amp Wall outlet has enough power to support 1800VA of UPS.

NEMA UPS Connector Receptacle Types

Connector Chart

NEMA UPS Connector Receptacle Types

Receptacle Chart

Connector Plug Naming Conventions

5-15R = 120V - 15A Receptacle

5-20R = 120V - 20A Receptacle

5-30R = 120V - 30A Receptacle

L5-30R = 120V - Locking 30A Receptacle

6-15R = 208V - 15A Receptacle

L6-15R = 208V - Locking 15A Receptacle

6-20R = 208V - 20A Receptacle

L6-20R = 208V - Locking 20A Receptacle

6-30R = 208V - 30A Receptacle

L6-30R = 208V - Locking 30A Receptacle

Receptacle Naming Conventions 

5-15R = 120V - 15A Receptacle

5-20R = 120V - 20A Receptacle

5-30R = 120V - 30A Receptacle

L5-30R = 120V - Locking 30A Receptacle

6-15R = 208V - 15A Receptacle

L6-15R = 208V - Locking 15A Receptacle

6-20R = 208V - 20A Receptacle

L6-20R = 208V - Locking 20A Receptacle

6-30R = 208V - 30A Receptacle

L6-30R = 208V - Locking 30A Receptacle

Eaton 3S UPS features and benefits: 

Ease-of-use

The clean and simple design of the 3S allows you to start backing up your equipment in a few moments. The 3S also integrates automatically with standard power policies in Windows, Mac and Linux through the plug-and-play USB management port (3S550 and 3S750 only).

EcoControl

The 3S manages your energy efficiency for you with EcoControl Master/Control outlets (model 3S750 only). When the item using the Master outlet (e.g., your computer) is idle or shut down, then items using the Control outlets (e.g., printer, scanner, fax) are automatically powered down — rewarding you with up to 30 percent in energy savings over a typical battery backup. 

Modern design

The sleek design of the 3S allows you to display it alongside your high-tech equipment for a sophisticated look. This unit can be wall-mounted, desk-mounted or placed on the floor for additional space savings.

Premium protection

The high-efficiency design of the Eaton 3S provides premium power protection for up to 10 devices

Data protection 

Multi-Unit Discounts

Eaton’s free UPS Companion software provides easy configuration and UPS status notifications, while automating graceful shutdown for your computer during a prolonged power outage, preventing data loss.

To learn more, please visit: Eaton.com/IntelligencePlatform

What FGC Offers


Services and support 

Eaton provides product support 24 hours a day, 7 days a week. From battery replacement to full service plans, Eaton is here to support you through the life of your product. 

Three-year warranty 

The 3S warranty covers both the UPS and the battery for three years.

Battery runtime 

The 3S provides up to 30 minutes of high efficiency and energy-saving battery backup and surge protection for your home and office equipment.

Contact Us

We Can Help Answer Any Unanswered Questions

Experienced Product Representatives are on hand to send you information and quotations for equipment. If you need help with sizing, installation planning, or general questions about products, please fill in the appropriate form below and someone will contact you shortly.


You may also call 844-501-1887 to get a direct product representative. Or you may chat with one of our product specialists in the chat box provided.

Eaton 3S UPS Contact Form

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