Toshiba · 4300
Toshiba 4300 three-phase UPS
The Toshiba 4300 Series is a three-phase UPS rated 30 to 50 kVA.
Toshiba 4300 Series: key facts
- TypeThree-phase UPS
- Power range30 to 50 kVA
- StatusDiscontinued
- Current alternativeToshiba 4400 Series
- Service in CanadaPreventive maintenance, battery replacement and emergency repair, including discontinued units. 1 (438) 881-3363
Sources, checked October 3, 2026: Toshiba International, legacy UPS products.
Is the Toshiba 4300 Series discontinued? What replaces it?
Toshiba lists the 4300 Series under its legacy UPS products. Its current 15 to 50 kVA three-phase model is the 4400 Series. See the Toshiba 4400 Series page.
Units already installed keep working after the manufacturer's cut-off; what changes is parts and factory support. We maintain discontinued units and plan the replacement when it makes sense. How to plan the replacement of a discontinued three-phase UPS.
How a three phase double conversion UPS carries the load, and where the bypass sits.
4300 models
The orderable configurations we supply and service:
| Model | Rating | Phase / Voltage | Part number | Status |
|---|---|---|---|---|
| Toshiba 4300 Series 30kVA | 30 kW | 3ph in/out (3:3 or 3:4) 208/480V | · | EOL |
| Toshiba 4300 Series 50kVA | 50 kW | 3ph in/out (3:3 or 3:4) 208/480V | · | EOL |
Specifications
Batteries and battery cabinets for the Toshiba 4300 Series
Battery strings and cabinets depend on the configuration and runtime. A worn string in the Toshiba 4300 Series can be rebuilt from the UPS battery block catalogue.
Toshiba 4300 Series service in Canada
We service the Toshiba 4300 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.
- Phone: 1 (438) 881-3363
- Email: info@threephaseups.ca
- Coverage: across Canada, in English and French
Battery strings, capacitors and fans are checked as part of preventive maintenance for Toshiba UPS systems.
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 4300 is one option we weigh on its merits, not the only answer.
Common questions
What is the Toshiba 4300 Series?
The Toshiba 4300 Series is a three-phase UPS rated 30 to 50 kVA.
Is the Toshiba 4300 Series discontinued?
Toshiba lists the 4300 Series under its legacy UPS products. Its current 15 to 50 kVA three-phase model is the 4400 Series.
Who services the Toshiba 4300 Series in Canada?
A Canadian UPS service and supply provider, in business since 2012, services the Toshiba 4300 Series 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: Toshiba 4300
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.