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Few battery inverters work on a 277/480V three-phase bus, and this Quattro 48V 15kVA 277V is one of them. Three units form one three-phase set running from a 48V battery bank, for commercial buildings, farms, pump stations, and industrial sites where converting to a different voltage is not practical.
Planning a system? Read our guide: How to size a battery backup system for your home.
Suited to warehouses, agricultural operations, pump stations, and industrial sites with 480V three-phase loads. Plan on a minimum of three units for one three-phase set.
About the Victron Quattro 15kVA 277/480V Inverter/Charger The Victron Quattro 15kVA 277V produces 277/480V three-phase power from a 48V battery bank. Three units form one three-phase set at 36kW continuous (75kW surge), and up to four sets can be paralleled for 144kW continuous with 2,400A of combined battery charging. This is the inverter for commercial buildings, warehouses, agricultural operations, pump stations, and industrial sites that run 480V three-phase equipment and need battery backup or off-grid capability on that bus. There are very few 480V battery inverter options on the market. Most residential hybrid inverters top out at 120/240V split-phase. The Quattro 277V fills the gap for facilities where the existing electrical infrastructure is 277/480V and retrofitting to a lower voltage isn’t practical or desirable. Dual AC Inputs and Automatic Transfer The Quattro has two independent AC inputs with an integrated transfer switch, so no external ATS is needed. A typical commercial setup uses grid power on AC Input 1 and a generator on AC Input 2. If grid power drops, the Quattro transfers to the generator automatically. If neither source is available, it inverts from battery. The transfer to battery happens in under 20ms on the primary output, fast enough to keep IT equipment, controls, and lighting online. Each input has an independently configurable current limit. This prevents the Quattro from overloading a standby generator that’s smaller than the grid connection. Two AC Outputs Output 1 stays powered from any available source (grid, generator, or battery) with seamless transfer. Output 2 is only active when an AC input is live. Use Output 2 for non-critical loads that should not draw from the battery bank during an outage. PowerAssist for Undersized Generators PowerAssist monitors real-time load demand and additional the AC source with battery power when demand exceeds what the generator or grid connection can deliver. This means a facility can run loads that temporarily exceed generator capacity without tripping breakers, because the Quattro covers the difference from battery. When demand drops, excess generator capacity goes back to charging. Battery Charging 200A per unit, 600A per three-phase set. The adaptive charger adjusts its profile based on battery state and supports LiFePO4, lead-acid, gel, AGM, and custom profiles. At 600A from a single three-phase set, large commercial battery banks can be recharged quickly from generator or grid power during off-peak hours. Scaling The minimum configuration is three units (one three-phase set) at 36kW / 75kW surge. The maximum is four sets of three (twelve units total) at 144kW continuous with 2,400A charging. Each additional set is added through VE.Bus and configured with Victron’s System Configurator software. A Cerbo GX manages and monitors the entire multi-unit system through the VRM portal. Why Victron for Commercial 480V Victron has built three-phase inverter systems for decades in the marine, telecom, and off-grid commercial sectors. The Quattro platform is field-proven in environments where downtime costs real money. The VE.Bus architecture handles parallel and three-phase coordination natively without third-party integration. Remote monitoring through VRM means facility managers and integrators can see system status, battery SOC, and load data from anywhere. Firmware is configurable for off-grid, grid-interactive, and ESS (Energy Storage System) modes depending on the application.
Warranty terms mentioned in this description are the manufacturer’s. Our own coverage is the 30-day limited warranty.
We confirm compatibility, installation requirements, and delivery details with you during order review, before any payment. Home electrical work may require a qualified installer.
Commercial 480V systems need careful planning, so contact our team to talk through unit count and configuration for this Quattro. Message our team on WhatsApp.
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