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The Eaton 9390 is a three-phase UPS that Eaton rates at 20 to 160 kVA. Eaton’s catalogue lists it as end-of-life and names the 93PM as the comparable UPS. Eaton’s U.S. End of Service Life table targets best efforts support for listed 9390 models from 2027 at 208 V and 2028 at 480 V, and Eaton offers a Service Life Extension Program for aging units. We provide battery string replacement, capacitor service, preventive maintenance, and a written comparison of keeping the unit, Eaton’s SLEP, and replacing it.
Three phaseclass
Onlinetopology
24/7emergency line
How an online unit protects the load
Double conversion: the load always runs on the inverter, so an outage produces no transfer gap. The static bypass exists for maintenance and overload, not for everyday sags.
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FAQ
Eaton 9390 questions
Is the Eaton 9390 still serviceable?
Yes. Eaton’s U.S. End of Service Life table lists the 9390 20-40 kVA and 100-160 kVA in full support from 2009, with the move to best efforts targeted for 2027 at 208 V and 2028 at 480 V, dates Eaton says may change. Eaton also offers its Service Life Extension Program for aging units. We service 9390 systems across Canada and give a written assessment of your unit.
Should I replace my 9390 or keep maintaining it?
Eaton recommends evaluating UPS electronics replacement after 10 years of service. For 9390s that are 10 or more years old, where the owner wants to avoid the risk of electronics wear-out, Eaton recommends replacing the UPS or using its Service Life Extension Program, in which Eaton installs a new UPS inside the existing frame with new electronics. We compare keeping, SLEP and replacing in writing for your unit.
What replaces the Eaton 9390?
Eaton names the 93PM as the UPS comparable to the 9390. We size the 93PM option for your load in a written comparison.
How often should 9390 batteries be replaced?
It depends on the batteries’ age, room temperature and how often they discharge. We test the strings and quote replacement from the results.
Do you service 9390 systems in government facilities?
Yes. We hold active federal contracts and our technicians undergo security clearance for government data centres and secure facilities.