Toshiba · 4400
The Toshiba 4400 Series is a three-phase UPS rated 15 to 50 kVA.

Toshiba lists the 4400 Series as a current three-phase UPS.
Sources, checked October 3, 2026: Toshiba International, 4400 Series 3-phase UPS 15-50 kVA.
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 |
|---|---|---|---|---|
| Toshiba 4400 Series 15kVA | 15 kW | 3ph in/out (3:3) 208V 4W | · | Current |
| Toshiba 4400 Series 20kVA | 20 kW | 3ph in/out (3:3) 208V 4W | · | Current |
| Toshiba 4400 Series 25kVA | 25 kW | 3ph in/out (3:3) 208V 4W | · | Current |
| Toshiba 4400 Series 30kVA | 30 kW | 3ph in/out (3:3) 208V 4W | · | Current |
| Toshiba 4400 Series 50kVA | 50 kW | 3ph in/out (3:3) 208V 4W | · | Current |
Battery strings and cabinets depend on the configuration and runtime. For a replacement string in a Toshiba cabinet, see batteries for three-phase UPS cabinets.
We service the Toshiba 4400 Series 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.
For a unit that is already installed, start with maintenance and repair for the Toshiba 4400 Series.
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 4400 is one option we weigh on its merits, not the only answer.
The Toshiba 4400 Series is a three-phase UPS rated 15 to 50 kVA.
No. Toshiba lists the 4400 Series as a current three-phase UPS.
A Canadian UPS service and supply provider, in business since 2012, services the Toshiba 4400 Series 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.