Eaton 9355 UPSDesigned [Formerly Powerware 9355 UPS] to be a high quality power backup system for IT and electrical engineering infrastructure in corporate, healthcare, banking, and industrial applications, the EATON 9355 UPS packs maximum battery runtime into a very small footprint. With premium double-conversion backup power and scalable battery runtimes, the EATON 9355 Uninterruptible Power Supply (UPS) is a complete three-phase power protection solution; and it can be equipped with an integrated, customizable power distribution module that includes a maintenance bypass switch.

Features & Benefits Of Eaton 9355 Uninterruptible Power Supply System (UPS)

  • Sleek tower design includes internal batteries and an integrated power distribution module for a complete solution to your uninterruptible power supply requirements
  • Industry-leading power density has up to a 75 percent smaller footprint yet provides 13 percent more power capacity than comparable industrial UPS systems or commercial UPS systems
  • High 0.9 output power factor provides more real power in less space
  • Proprietary ABM technology includes an innovative three-stage battery charging system that extends battery service life
  • Hot Sync technology enables paralleling of up to four 9355 UPS units for additional capacity and redundancy
  • Has scalability with 10 KVA models that can be upgraded with an additional 10 KVA of capacity
  • Unit is scalable up to 30KVA. 9355 UPS Sizes included 10KVA, 15KVA, 20KVA and 30KVA

Product Snapshot

Power Rating10-30 kVA
Voltage208/220/400/480/600 Vac three phase
Frequency50/60 Hz
Product SeriesPowerware

Technical Specs

Power rating20 kVA/18 kW and 30 kVA/27 kW at 0.9 power factor
DiagnosticsFull system self-test at startup
UPS bypassAutomatic on overload or UPS failure
Parallel for redundancyYes, using Powerware Hot Sync technology for redundancy and capacity
Dimensions and weightsSee model selection table
Overload150% for 5 sec / 125% for 1 min (online), 110% for 10 min
Nominal Input Voltage208V/120V, 220V/127V +10, -15%
480V/277V, 600V (480+600 with transformer)
400V models also available
Operating frequency50/60 Hz (45 to 65 Hz)
Input power factor0.99 typical
Input current distortion<5% THD
Nominal output voltage208/120, 220/120 Vac
480/227 with output transformer
Output voltage regulation±1% static; ±4% dynamic with 100% step load recovery within 1 ms response time
Efficiency91%, typical
Heat dissipation (BTU/hr)20 kVA models
6,762 @ 208V and 220V input
10,450 @ 480V and 600V (with input isolation transformer)
30 kVA models:
9,220 @ 208V and 220V input
13,831 @ 480V and 600V (with input isolation transformer)
Battery type9 Ah, sealed, lead-acid, maintenance-free
Battery runtimeSee battery backup time chart
Battery replacementField-replaceable
ChargerDefault is 8A
Parallel for redundancyYes, using Powerware Hot Sync technology and capacity
LCD displayGraphical LCD with blue backlight
LEDs(4) LEDs for notice and alarm
Audible alarmsYes
Communication ports(1) RS-232, (1) relay contact, (1) REPO,
(2) environmental input
Communication slot(2) X-Slot communication bays
Power management softwareBundled Software Suite CD
Operating Temperature50–104ºF (10–40ºC), 45ºC with 7.5% derating;
Optimal battery performance: 77ºF (25ºC)
Storage Temperature32–77ºF (0–25ºC); Recommended battery storage: 59–77ºF (15–25ºC)
Relative humidity0–95%, non-condensing
Audible noise< 58 dBA at 1 meter depending on load
Safety certificationsIEC 62040-1-1, IEC 60950, EN 62040-1-1, UL 1778, NOM-0190SCP8-1993
EMC complianceEN 50091-2 Class A
QualityISO 9001: 2000 and ISO 14001:1996
MarkingsUL, cUL, NOM-NYCE

1. Due to continuous product improvements, program specifications are subject to change without notice.

Industries & Applications

Designed for electrical engineering infrastructure in corporate, healthcare, banking, and industrial applications, the EATON 9355 is particularly suited to:

  • Smaller data centers
  • Smaller telecom
  • Hospitals, clinics, and medical centers
  • Financial Institutions