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Eaton · 9355

Eaton 9355 three-phase UPS

The Eaton 9355 is a tower double-conversion three-phase UPS rated 10 to 30 kVA, at 208, 220, 480 or 600 V.

Eaton 9355 three-phase UPS
Phase
3PH
Models
5
Lifecycle
Current model

Eaton 9355: key facts

Eaton still lists the 9355 as a current product, and names it as one of the replacements for the discontinued Eaton 93E. Eaton lists its 480 V and 600 V versions with an input isolation transformer. For service, Eaton's table keeps the 9355 in full support until best efforts begin in 2033 (2035 under its extension program).

Sources, checked October 3, 2026: Eaton, 9355 UPS product page; Eaton, 93E UPS page; Eaton UK, 9355 UPS product page; Eaton, UPS End of Service Life master table PL161010EN (rev. May 29, 2026).

THREE PHASE POWER PATH3 PHASE INPUT480 V or 208 V feedRECTIFIERAC to DCDC BUSregulatedINVERTERDC to clean ACCRITICAL LOADracks, plant, imagingBATTERYon the DC busSTATIC BYPASSmaintenance and overload pathDouble conversion: the load stays on the inverter,so an outage produces no transfer gap.

How a three phase double conversion UPS carries the load, and where the bypass sits.

9355 models

The orderable configurations we supply and service:

ModelRatingPhase / VoltagePart numberStatus
Eaton Powerware PW9355 10kVA Tower8 kW3ph in (3:1/3:3 config) 208/220VKA1013400000010Current
Eaton Powerware PW9355 15kVA Tower12 kW3ph in (3:1/3:3 config) 208/220VKA1513400000010Current
Eaton Powerware PW9355 15kVA Tower (variant)12 kW3ph in (3:1/3:3 config) 208/220VKA1513600000010Current
Eaton 9355 30kVA Tower24 kW3ph in/out (3:3) 208/480VKB3013200000010Current
Eaton 9355 (10-30kVA family range)10 kW3ph in/out 208/480V·Current

Specifications

Phase3ph in (3:1/3:3 config)
Voltage208/220V
Models5
StatusCurrent

Batteries and battery cabinets for the Eaton 9355

Battery strings and cabinets depend on the configuration and runtime. Matched blocks and cabinets are listed under Eaton replacement batteries online.

Eaton 9355 service in Canada

We service the Eaton 9355 across Canada: preventive maintenance, battery replacement and emergency repair, including units the manufacturer no longer supports. We are a Canadian UPS service and supply provider, working on three-phase systems since 2012.

Scheduled visits, battery work and fault response for these systems are covered by Eaton UPS maintenance and repair in Canada.

Sizing, redundancy and custom builds

We engineer the solution: load and growth analysis, redundancy (N, N+1, 2N), runtime and battery sizing, paralleling and switchgear, and custom configurations where the standard catalogue doesn't fit. Because we supply every major brand, the 9355 is one option we weigh on its merits, not the only answer.

Common questions

What is the Eaton 9355?

The Eaton 9355 is a tower double-conversion three-phase UPS rated 10 to 30 kVA, at 208, 220, 480 or 600 V.

Is the Eaton 9355 discontinued?

No. Eaton still lists the 9355 as a current product, and names it as one of the replacements for the discontinued Eaton 93E. Eaton lists its 480 V and 600 V versions with an input isolation transformer. For service, Eaton's table keeps the 9355 in full support until best efforts begin in 2033 (2035 under its extension program).

Has the Eaton 9355 been replaced by the 93PS?

No. On October 3, 2026, Eaton's US, UK and Middle East pages all list the 9355 as a current product, rated 10 to 30 kVA, with no discontinued notice. The 93PS is a separate compact modular range (8 to 40 kW) that Eaton lists on its international sites.

Who services the Eaton 9355 in Canada?

A Canadian UPS service and supply provider, in business since 2012, services the Eaton 9355 across Canada: preventive maintenance, battery replacement and emergency repair, including discontinued units. Call 1 (438) 881-3363 or email info@threephaseups.ca.

Request a quote: Eaton 9355

Tell us the application and we reply within 4 business hours with the sizing, the right system, the installation and a written quote. Three-phase installs usually need a licensed electrician, so let us know if you have one.

Do you have your own electrician?
Yearly preventive maintenance?

Or email info@threephaseups.ca · 1 (438) 881-3363

Brand names are trademarks of their owners and are used only to identify the equipment we service. We are not the manufacturer and are not affiliated with it.