Discontinued

Backup Power (UPS)

The Eaton 3S UPS has reached end-of-life status. Eaton will, of course, continue to provide services and replacement parts for the 3S. If you're looking for a new UPS, the Tripp Lite by Eaton Standby UPS is the replacement offering.

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Overview Models Resources

Discover the top benefits of the 3S UPS in this short video

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Interact with the 3S

The 3S UPS can protect your equipment in a variety of environments.

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3-year warranty

Comprehensive coverage and support for your UPS and batteries.

Learn more about what the warranty includes

Specifications

The Eaton 3S UPS has reached end-of-life status

The 3S UPS is no longer produced. Offered as a form, fit and function replacement is the Tripp Lite by Eaton Standby UPS.

Compact desktop UPS with silent alarm provides battery backup support for your home/office network system or digital signage components.

Protects equipment against blackouts, brownouts, overvoltages, surges and line noise
Keeps AC power running during blackouts to allow time for file saves and safe shutdown
NEMA 5-15R outlets power and protect PC, home theater or digital signage equipment
Home-friendly alarm remains silent in backup mode, sounding only when imperative
High >98% efficiency with low BTU ratings saves electricity and lowers your energy costs

3-year limited warranty

Replacement UPS for the 3S series UPS

Eaton 3S UPS model	Tripp Lite by Eaton Standby UPS model
3S350	INTERNET350U
3S550	INTERNET550U
3S750	INTERNET750U

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Eaton is an intelligent power management company dedicated to improving the quality of life and protecting the environment for people everywhere. We are guided by our commitment to do business right, to operate sustainably and to help our customers manage power ─ today and well into the future. By capitalizing on the global growth trends of electrification and digitalization, we’re accelerating the planet’s transition to renewable energy and helping to solve the world’s most urgent power management challenges.

Eaton 3S UPS