Three-phase UPS
208/120V three-phase UPS
Three-phase UPS for buildings with 208/120V service: data rooms, clinics, labs and commercial facilities. Choose a self-contained unit (the Li90 with lithium inside, or the E91 tower) or a modular system with hot-swap power modules and N+1 redundancy.
Compare models
| Model | Type | Capacity | Notes |
|---|---|---|---|
| Li90 | Self-contained tower | 10-30 kW | Lithium batteries inside, 12.6 in wide |
| E91 10-20 kW | Tower | 10-20 kW | Simple VRLA service model |
| E91 30-40 kW | Tower | 30-40 kW | Simple VRLA service model |
| M90C-2S | Modular, 2-slot | Up to 8 kW | Compact; Eaton BladeUPS replacement |
| M90C-6S | Modular, 6-slot | Up to 24 kW | Hot-swap modules |
| M90U | Modular | Up to 60 kW | Hot-swap modules, N+1 |
| M90LU | Modular | Up to 60 kW | Long runtime |
| M90U-80 | Modular | Up to 80 kW | Up to 16 battery modules inside |
| M90U-140 | Modular, N+1 | Up to 140 kW | Modular battery cabinet, up to 8 strings |
Self-contained
One cabinet, fixed capacity: lithium inside, or a simple tower with VRLA batteries.
Modular
Hot-swap power modules with N+1 redundancy, from a compact 2-slot frame to 140 kW.
How to choose
| If you need | Start with |
|---|---|
| 10-30 kW with lithium batteries inside, in a small footprint | Li90 |
| 10-40 kW in a simple tower with VRLA batteries | E91 |
| A compact modular UPS, up to 24 kW | M90C |
| Modular with N+1, up to 60 kW | M90U or M90LU |
| Battery modules inside the UPS cabinet, up to 80 kW | M90U-80 |
| Up to 140 kW with a modular battery cabinet | M90U-140 |
| Replacing an Eaton BladeUPS | M90C-2S |
Frequently asked questions
Self-contained or modular?
A self-contained UPS like the Li90 or E91 has one fixed power stage and is simplest to install. A modular UPS is built from hot-swap power modules, so it can grow in steps, carry a spare module for N+1 redundancy, and be serviced without shutting down.
What does the Li90 offer?
The Li90 puts LiFePO4 batteries inside the UPS cabinet, in 10, 20 and 30 kW models only 12.6 inches wide, with internal runtime of 15 to 45 minutes at 10 kW.
What is the M90LU?
The L stands for long runtime. Tell us the runtime you need and our engineers will size the batteries for it.
How much runtime can I get?
It depends on the model, the load and the batteries. Our engineers can size runtime for your load, from a few minutes of ride-through to an hour or more with battery cabinets.
Which models are TAA compliant?
See the TAA-compliant three-phase UPS page for the current list.