Mitsubishi · 9900AEGIS
The Mitsubishi Electric 9900AEGIS is a double-conversion three-phase UPS, ENERGY STAR rated, 80 to 225 kVA.

Mitsubishi Electric lists the 9900AEGIS as current and names it as the potential replacement for the 9900A and 9800A.
Sources, checked October 3, 2026: Mitsubishi Electric, 9900AEGIS 80-225 kVA; Mitsubishi Electric, UPS product lifecycle and support schedule.
How a three phase double conversion UPS carries the load, and where the bypass sits.
The orderable configurations we supply and service:
| Model | Rating | Phase / Voltage | Part number | Status |
|---|---|---|---|---|
| Mitsubishi 9900AEGIS 80kVA | 72 kW | 3ph in/out 480V | · | Current |
| Mitsubishi 9900AEGIS 100kVA | 90 kW | 3ph in/out 480V | · | Current |
| Mitsubishi 9900AEGIS 150kVA | 135 kW | 3ph in/out 480V | · | Current |
| Mitsubishi 9900AEGIS 160kVA | 144 kW | 3ph in/out 480V | · | Current |
| Mitsubishi 9900AEGIS 225kVA | 203 kW | 3ph in/out 480V | · | Current |
The 9900AEGIS is the 80 to 225 kVA tier of the 9900 line, 480 V, transformerless, advanced 3-level IGBT, up to 97% efficiency on a flat curve and ENERGY STAR rated. It performs a 100% step load without drawing batteries, which matters for medical-imaging inrush (MRI/CT), and doubles as a power conditioner; the 80 and 100 kVA models are UL 924 listed for emergency lighting, and the family is OSHPD seismic-rated and lithium-ready, with 15-year capacitor life. Mitsubishi's lifecycle page names the 9900AEGIS as the potential replacement for the 9900A, which is in Best Effort support with a projected end-of-support date of 12/2026.
Source: Mitsubishi Electric, 9900AEGIS product page and product lifecycle page. Figures are Mitsubishi's published specifications.
Battery strings and cabinets depend on the configuration and runtime. A worn string in the Mitsubishi Electric 9900AEGIS can be rebuilt from the UPS battery block catalogue.
We service the Mitsubishi Electric 9900AEGIS 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.
Planned visits and emergency calls are arranged through on-site service for the Mitsubishi Electric 9900AEGIS.
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 9900AEGIS is one option we weigh on its merits, not the only answer.
The Mitsubishi Electric 9900AEGIS is a double-conversion three-phase UPS, ENERGY STAR rated, 80 to 225 kVA.
No. Mitsubishi Electric lists the 9900AEGIS as current and names it as the potential replacement for the 9900A and 9800A.
A Canadian UPS service and supply provider, in business since 2012, services the Mitsubishi Electric 9900AEGIS across Canada: preventive maintenance, battery replacement and emergency repair, including discontinued units. Call 1 (438) 881-3363 or email info@threephaseups.ca.
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.
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.